Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

237 files changed, 34321 insertions, 0 deletions

diff --git a/taskcluster/ci/addon/kind.yml b/taskcluster/ci/addon/kind.yml
new file mode 100644
index 0000000000..84d616581b
--- /dev/null
+++ b/taskcluster/ci/addon/kind.yml
@@ -0,0 +1,44 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    # non-system python
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    use-system-python: false
+
+jobs:
+    tps-xpi:
+        description: Build the TPS add-on
+        index:
+            product: firefox
+            job-name: addons.tps
+        treeherder:
+            platform: linux64/opt
+            symbol: TPS(addon)
+            kind: build
+            tier: 1
+        run-on-projects: [mozilla-central]
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: debian12-base}
+            max-run-time: 1800
+            artifacts:
+                - type: file
+                  name: public/tps.xpi
+                  path: /builds/worker/checkouts/gecko/tps-out/tps.xpi
+        run:
+            using: mach
+            mach: tps-build --dest tps-out
+            sparse-profile: tps
+        when:
+            files-changed:
+                - 'services/sync/tps/extensions/tps/**'
diff --git a/taskcluster/ci/are-we-esmified-yet/kind.yml b/taskcluster/ci/are-we-esmified-yet/kind.yml
new file mode 100644
index 0000000000..f2c462f455
--- /dev/null
+++ b/taskcluster/ci/are-we-esmified-yet/kind.yml
@@ -0,0 +1,42 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+    - fetch
+
+transforms:
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+jobs:
+    check:
+        description: Extracts statistics on remaining JSMs in the codebase
+        run-on-projects: []
+        attributes:
+            cron: true
+        index:
+            product: firefox
+            job-name: are-we-esmified-yet
+        treeherder:
+            platform: lint/opt
+            kind: other
+            symbol: js(esm)
+            tier: 2
+        worker-type: t-linux-xlarge-source
+        worker:
+            docker-image: {in-tree: "lint"}
+            max-run-time: 3600
+            artifacts:
+                - type: file
+                  name: public/are-we-esmified-yet.json
+                  path: /builds/worker/artifacts/are-we-esmified-yet.json
+        run:
+            using: run-task
+            command: >-
+                mkdir -p /builds/worker/artifacts &&
+                cd ${GECKO_PATH} &&
+                python3 ./taskcluster/scripts/misc/are-we-esmified-yet.py > /builds/worker/artifacts/are-we-esmified-yet.json
diff --git a/taskcluster/ci/artifact-build/kind.yml b/taskcluster/ci/artifact-build/kind.yml
new file mode 100644
index 0000000000..aa15674935
--- /dev/null
+++ b/taskcluster/ci/artifact-build/kind.yml
@@ -0,0 +1,105 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - fetch
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.build_attrs:transforms
+    - gecko_taskgraph.transforms.build_lints:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.artifact:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    index:
+        product: firefox
+    treeherder:
+        kind: build
+        symbol: AB
+        tier: 2
+    run-on-projects: ['mozilla-central']
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 3600
+        env:
+            PERFHERDER_EXTRA_OPTIONS: artifact
+            MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE: system
+            USE_ARTIFACT: '1'
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+        keep-artifacts: false
+    use-system-python: false
+
+jobs:
+    linux64-artifact/opt:
+        description: "Linux64 Opt Artifact Build"
+        index:
+            job-name: linux64-artifact-opt
+        treeherder:
+            platform: linux64/opt
+        worker:
+            env:
+                MOZ_ARTIFACT_TASK: {task-reference: '<linux64-opt>'}
+        run:
+            config:
+                - builds/releng_base_linux_64_builds.py
+        dependencies:
+            linux64-opt: build-linux64/opt
+        fetches:
+            toolchain:
+                - linux64-node
+
+    macosx64-artifact/opt:
+        description: "MacOS X x64 Opt Artifact Build"
+        index:
+            job-name: macosx64-artifact-opt
+        treeherder:
+            platform: osx-cross/opt
+        worker:
+            env:
+                MOZ_ARTIFACT_TASK: {task-reference: '<macosx64-opt>'}
+        run:
+            config:
+                - builds/releng_base_mac_64_cross_builds.py
+        dependencies:
+            macosx64-opt: build-macosx64/opt
+        fetches:
+            toolchain:
+                - linux64-hfsplus
+                - linux64-libdmg
+                - linux64-node
+
+    win64-artifact/opt:
+        description: "Win64 Opt Artifact Build"
+        index:
+            job-name: win64-artifact-opt
+        treeherder:
+            platform: windows2012-64/opt
+        worker:
+            env:
+                MOZ_ARTIFACT_TASK: {task-reference: '<win64-opt>'}
+        run:
+            config:
+                - builds/releng_base_linux_64_builds.py
+            extra-config:
+                mozconfig_platform: win64
+        dependencies:
+            win64-opt: build-win64/opt
+        fetches:
+            toolchain:
+                - linux64-node
+                - linux64-wine
+                - nsis
+            fetch:
+                - upx-3.95-win
diff --git a/taskcluster/ci/attribution-l10n/kind.yml b/taskcluster/ci/attribution-l10n/kind.yml
new file mode 100644
index 0000000000..7042411fa2
--- /dev/null
+++ b/taskcluster/ci/attribution-l10n/kind.yml
@@ -0,0 +1,187 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.attribution:resolve_keyed_by_transforms
+    - gecko_taskgraph.transforms.split_by_locale:transforms
+    - taskgraph.transforms.task_context
+    - gecko_taskgraph.transforms.attribution:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - toolchain
+    # Windows
+    - repackage-signing-l10n
+    # Mac
+    - repackage-l10n
+
+job-defaults:
+    description: Attribute release builds
+    shipping-phase: promote
+    # never run as part of CI
+    run-on-projects: []
+    worker-type: b-linux-gcp
+    locales-file: browser/locales/l10n-changesets.json
+    properties-with-locale:
+        by-build-platform:
+            win.*:
+                - label
+                - dependencies.repackage-signing-l10n
+                - treeherder.symbol
+                - fetches.repackage-signing-l10n
+            mac.*:
+                - label
+                - dependencies.repackage-l10n
+                - treeherder.symbol
+                - fetches.repackage-l10n
+    attributes:
+        build_type: opt
+        release_artifacts:
+            by-build-platform:
+                win.*:
+                    - public/build/target.installer.exe
+                mac.*:
+                    - public/build/target.dmg
+    treeherder:
+        symbol: Attr-L10n({locale})
+        kind: other
+        tier: 1
+    fetches:
+        by-build-platform:
+            win.*:
+                repackage-signing-l10n:
+                    - "{locale}/target.installer.exe"
+            mac.*:
+                repackage-l10n:
+                    - "{locale}/target.dmg"
+                toolchain:
+                    - "linux64-libdmg"
+    task-context:
+        from-file: browser/installer/attribution.yml
+        substitution-fields:
+            - run.command
+    worker:
+        artifacts:
+            - name: public/build
+              type: directory
+              path: /builds/worker/artifacts
+        docker-image:
+            in-tree: "partner-repack"
+        chain-of-trust: true
+        # Each task only processes one installer...this should be quick.
+        max-run-time: 600
+    run:
+        using: run-task
+        cwd: "{checkout}"
+        command:
+            by-build-platform:
+                win.*:
+                    - ./mach
+                    - python
+                    - python/mozrelease/mozrelease/attribute_builds.py
+                    - --attribution
+                    - dlsource={attribution_code[json][dlsource]}
+                    - --output
+                    - /builds/worker/artifacts
+                    # All jobs require attribution of target.installer.exe. Some may require
+                    # attribution of other files, which they can append themselves.
+                    - --input
+                    - /builds/worker/fetches/target.installer.exe
+                mac.*:
+                    - mkdir -p /builds/worker/artifacts &&
+                    - /builds/worker/fetches/dmg/dmg
+                    - attribute
+                    - /builds/worker/fetches/target.dmg
+                    - /builds/worker/artifacts/target.dmg
+                    - __MOZCUSTOM__
+                    - __MOZCUSTOM__dlsource%3D{attribution_code[json][dlsource]}
+    use-system-python: false
+
+jobs:
+    win32-devedition/opt:
+        label: attribution-win32-{locale}-devedition/opt
+        shipping-product: devedition
+        attributes:
+            build_platform: win32-devedition
+        treeherder:
+            platform: win32-devedition/opt
+        dependencies:
+            repackage-signing-l10n: repackage-signing-l10n-{locale}-win32-devedition/opt
+
+    win32-shippable/opt:
+        label: attribution-win32-{locale}-shippable/opt
+        shipping-product: firefox
+        locale-file-platform: win32
+        attributes:
+            build_platform: win32-shippable
+        treeherder:
+            platform: win32-shippable/opt
+        dependencies:
+            repackage-signing-l10n: repackage-signing-l10n-{locale}-win32-shippable/opt
+
+    win64-devedition/opt:
+        label: attribution-win64-{locale}-devedition/opt
+        shipping-product: devedition
+        attributes:
+            build_platform: win64-devedition
+        treeherder:
+            platform: win64-devedition/opt
+        dependencies:
+            repackage-signing-l10n: repackage-signing-l10n-{locale}-win64-devedition/opt
+
+    win64-shippable/opt:
+        label: attribution-win64-{locale}-shippable/opt
+        shipping-product: firefox
+        locale-file-platform: win64
+        attributes:
+            build_platform: win64-shippable
+        treeherder:
+            platform: win64-shippable/opt
+        dependencies:
+            repackage-signing-l10n: repackage-signing-l10n-{locale}-win64-shippable/opt
+
+    win64-aarch64-shippable/opt:
+        label: attribution-win64-aarch64-{locale}-shippable/opt
+        shipping-product: firefox
+        locale-file-platform: win64-aarch64
+        attributes:
+            build_platform: win64-aarch64-shippable
+        treeherder:
+            platform: win64-aarch64-shippable/opt
+        dependencies:
+            repackage-signing-l10n: repackage-signing-l10n-{locale}-win64-aarch64-shippable/opt
+
+    win64-aarch64-devedition/opt:
+        label: attribution-win64-aarch64-{locale}-devedition/opt
+        shipping-product: devedition
+        attributes:
+            build_platform: win64-aarch64-devedition
+        treeherder:
+            platform: win64-aarch64-devedition/opt
+        dependencies:
+            repackage-signing-l10n: repackage-signing-l10n-{locale}-win64-aarch64-devedition/opt
+
+    macosx64-devedition/opt:
+        label: attribution-macosx64-{locale}-devedition/opt
+        shipping-product: devedition
+        attributes:
+            build_platform: macosx64-devedition
+        treeherder:
+            platform: macosx64-devedition/opt
+        dependencies:
+            repackage-l10n: repackage-l10n-{locale}-macosx64-devedition/opt
+
+    macosx64-shippable/opt:
+        label: attribution-macosx64-{locale}-shippable/opt
+        locale-file-platform: macosx64
+        shipping-product: firefox
+        attributes:
+            build_platform: macosx64-shippable
+        treeherder:
+            platform: macosx64-shippable/opt
+        dependencies:
+            repackage-l10n: repackage-l10n-{locale}-macosx64-shippable/opt
diff --git a/taskcluster/ci/attribution/kind.yml b/taskcluster/ci/attribution/kind.yml
new file mode 100644
index 0000000000..6a13ee5096
--- /dev/null
+++ b/taskcluster/ci/attribution/kind.yml
@@ -0,0 +1,176 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.attribution:resolve_keyed_by_transforms
+    - taskgraph.transforms.task_context
+    - gecko_taskgraph.transforms.attribution:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - toolchain
+    # Windows
+    - repackage-signing
+    # Mac
+    - repackage
+
+job-defaults:
+    description: Attribute release builds
+    shipping-phase: promote
+    # never run as part of CI
+    run-on-projects: []
+    worker-type: b-linux-gcp
+    fetches:
+        by-build-platform:
+            win.*:
+                repackage-signing:
+                    - target.installer.exe
+            mac.*:
+                repackage:
+                    - target.dmg
+                toolchain:
+                    - linux64-libdmg
+    attributes:
+        release_artifacts:
+            by-build-platform:
+                win.*:
+                    - public/build/target.installer.exe
+                mac.*:
+                    - public/build/target.dmg
+    treeherder:
+        symbol: Attr
+        kind: other
+        tier: 1
+    task-context:
+        from-file: browser/installer/attribution.yml
+        substitution-fields:
+            - run.command
+    worker:
+        artifacts:
+            - name: public/build
+              type: directory
+              path: /builds/worker/artifacts
+        docker-image:
+            in-tree: "partner-repack"
+        chain-of-trust: true
+        # Each task only processes one installer...this should be quick.
+        max-run-time: 600
+    run:
+        using: run-task
+        cwd: "{checkout}"
+        command:
+            by-build-platform:
+                win.*:
+                    - ./mach
+                    - python
+                    - python/mozrelease/mozrelease/attribute_builds.py
+                    - --attribution
+                    - dlsource={attribution_code[json][dlsource]}
+                    - --output
+                    - /builds/worker/artifacts
+                    # All jobs require attribution of target.installer.exe. Some may require
+                    # attribution of other files, which they can append themselves.
+                    - --input
+                    - /builds/worker/fetches/target.installer.exe
+                mac.*:
+                    - mkdir -p /builds/worker/artifacts &&
+                    - /builds/worker/fetches/dmg/dmg
+                    - attribute
+                    - /builds/worker/fetches/target.dmg
+                    - /builds/worker/artifacts/target.dmg
+                    - __MOZCUSTOM__
+                    - __MOZCUSTOM__dlsource%3D{attribution_code[json][dlsource]}
+    use-system-python: false
+
+jobs:
+    win32-devedition/opt:
+        label: attribution-win32-devedition/opt
+        shipping-product: devedition
+        attributes:
+            build_platform: win32-devedition
+            build_type: opt
+        treeherder:
+            platform: win32-devedition/opt
+        dependencies:
+            repackage-signing: repackage-signing-win32-devedition/opt
+
+    win32-shippable/opt:
+        label: attribution-win32-shippable/opt
+        shipping-product: firefox
+        attributes:
+            build_platform: win32-shippable
+            build_type: opt
+        treeherder:
+            platform: win32-shippable/opt
+        dependencies:
+            repackage-signing: repackage-signing-win32-shippable/opt
+
+    win64-devedition/opt:
+        label: attribution-win64-devedition/opt
+        shipping-product: devedition
+        attributes:
+            build_platform: win64-devedition
+            build_type: opt
+        treeherder:
+            platform: win64-devedition/opt
+        dependencies:
+            repackage-signing: repackage-signing-win64-devedition/opt
+
+    win64-shippable/opt:
+        label: attribution-win64-shippable/opt
+        shipping-product: firefox
+        attributes:
+            build_platform: win64-shippable
+            build_type: opt
+        treeherder:
+            platform: win64-shippable/opt
+        dependencies:
+            repackage-signing: repackage-signing-win64-shippable/opt
+
+    win64-aarch64-shippable/opt:
+        label: attribution-win64-aarch64-shippable/opt
+        shipping-product: firefox
+        attributes:
+            build_platform: win64-aarch64-shippable
+            build_type: opt
+        treeherder:
+            platform: win64-aarch64-shippable/opt
+        dependencies:
+            repackage-signing: repackage-signing-win64-aarch64-shippable/opt
+
+    win64-aarch64-devedition/opt:
+        label: attribution-win64-aarch64-devedition/opt
+        shipping-product: devedition
+        attributes:
+            build_platform: win64-aarch64-devedition
+            build_type: opt
+        treeherder:
+            platform: win64-aarch64-devedition/opt
+        dependencies:
+            repackage-signing: repackage-signing-win64-aarch64-devedition/opt
+
+    macosx64-devedition/opt:
+        label: attribution-macosx64-devedition/opt
+        shipping-product: devedition
+        attributes:
+            build_platform: macosx64-devedition
+            build_type: opt
+        treeherder:
+            platform: macosx64-devedition/opt
+        dependencies:
+            repackage: repackage-macosx64-devedition/opt
+
+    macosx64-shippable/opt:
+        label: attribution-macosx64-shippable/opt
+        shipping-product: firefox
+        attributes:
+            build_platform: macosx64-shippable
+            build_type: opt
+        treeherder:
+            platform: macosx64-shippable/opt
+        dependencies:
+            repackage: repackage-macosx64-shippable/opt
diff --git a/taskcluster/ci/balrog/kind.yml b/taskcluster/ci/balrog/kind.yml
new file mode 100644
index 0000000000..324ef2c521
--- /dev/null
+++ b/taskcluster/ci/balrog/kind.yml
@@ -0,0 +1,35 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.balrog_submit
+    - gecko_taskgraph.transforms.scriptworker:add_balrog_scopes
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - beetmover-repackage
+    - startup-test
+
+only-for-attributes:
+    - nightly
+    - shippable
+
+not-for-build-platforms:
+    - android-arm-shippable/opt
+    - android-x86_64-shippable/opt
+    - android-x86-shippable/opt
+    - android-aarch64-shippable/opt
+
+jobs:
+    balrog:
+        from-deps:
+            group-by: single-with-filters
+        update-no-wnp:
+            by-release-type:
+                nightly.*: false
+                default: true
diff --git a/taskcluster/ci/beetmover-apt/kind.yml b/taskcluster/ci/beetmover-apt/kind.yml
new file mode 100644
index 0000000000..9eb65f8858
--- /dev/null
+++ b/taskcluster/ci/beetmover-apt/kind.yml
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.release:run_on_releases
+    - gecko_taskgraph.transforms.beetmover_apt
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - beetmover-repackage
+
+only-for-build-platforms:
+    - linux-shippable/opt
+    - linux64-shippable/opt
+    - linux-devedition/opt
+    - linux64-devedition/opt
+
+jobs:
+    beetmover-apt:
+        from-deps:
+            group-by: single-with-filters
+        run-on-releases:
+            - nightly
+            - beta
+            - release
diff --git a/taskcluster/ci/beetmover-checksums/kind.yml b/taskcluster/ci/beetmover-checksums/kind.yml
new file mode 100644
index 0000000000..7ecf79ea58
--- /dev/null
+++ b/taskcluster/ci/beetmover-checksums/kind.yml
@@ -0,0 +1,30 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.beetmover_checksums
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - beetmover-repackage
+
+only-for-attributes:
+    - nightly
+    - shippable
+
+jobs:
+    beetmover-checksums:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: promote
+        attributes:
+            artifact_prefix: public
+            artifact_map:
+                by-release-type:
+                    beta|release.*|esr.*: taskcluster/gecko_taskgraph/manifests/firefox_candidates_checksums.yml
+                    default: taskcluster/gecko_taskgraph/manifests/firefox_nightly_checksums.yml
diff --git a/taskcluster/ci/beetmover-geckoview/kind.yml b/taskcluster/ci/beetmover-geckoview/kind.yml
new file mode 100644
index 0000000000..109b42eb6a
--- /dev/null
+++ b/taskcluster/ci/beetmover-geckoview/kind.yml
@@ -0,0 +1,68 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.beetmover_geckoview
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - build-signing
+
+only-for-attributes:
+    - nightly
+    - shippable
+
+not-for-build-platforms:
+    - linux-shippable/opt
+    - linux64-shippable/opt
+    - linux64-nightlyasrelease/opt
+    - macosx64-shippable/opt
+    - macosx64-nightlyasrelease/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - win64-aarch64-shippable/opt
+    - win64-nightlyasrelease/opt
+    - linux-devedition/opt
+    - linux64-devedition/opt
+    - macosx64-devedition/opt
+    - win32-devedition/opt
+    - win64-devedition/opt
+    - win64-aarch64-devedition/opt
+    - linux64-asan-reporter-shippable/opt
+    - win64-asan-reporter-shippable/opt
+
+jobs:
+    beetmover-geckoview:
+        from-deps:
+            group-by: single-with-filters
+        attributes:
+            artifact_map: taskcluster/gecko_taskgraph/manifests/fennec_geckoview.yml
+        run-on-projects: ['mozilla-release']
+        run-on-hg-branches:
+            by-project:
+                mozilla-release:
+                    - '^GECKOVIEW_\d+_RELBRANCH$'
+                default:
+                    - 'all'
+        shipping-phase:
+            by-project:
+                # Beetmoving geckoview makes it available to the official maven repo.
+                # That happens:
+                # 1. as part of the ship-geckoview graph on mozilla-central
+                # 2. as part of Firefox promote graphs on both mozilla-beta and mozilla-release
+                # 3. at every patch uplifted on the GECKOVIEW_XX_RELBRANCH on mozilla-release
+                # Reminder: There is no Android/geckoview build on ESR.
+                #
+                # The logic of point 2 is handled in target_tasks directly because it's mixing and
+                # matching 2 different shipping-products
+                mozilla-release: build
+                default: promote
+        bucket-scope:
+            by-release-level:
+                production: 'project:releng:beetmover:bucket:maven-production'
+                staging: 'project:releng:beetmover:bucket:maven-staging'
diff --git a/taskcluster/ci/beetmover-repackage/kind.yml b/taskcluster/ci/beetmover-repackage/kind.yml
new file mode 100644
index 0000000000..8746bb5b44
--- /dev/null
+++ b/taskcluster/ci/beetmover-repackage/kind.yml
@@ -0,0 +1,65 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.beetmover_repackage_l10n
+    - gecko_taskgraph.transforms.beetmover_repackage
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    # Primary dependencies
+    - repackage
+    - repackage-l10n
+    # Other dependencies
+    - build
+    - build-signing
+    - build-mac-signing
+    - build-mac-notarization
+    - repackage-signing
+    - shippable-l10n
+    - shippable-l10n-signing
+    - shippable-l10n-mac-signing
+    - shippable-l10n-mac-notarization
+    - repackage-signing-l10n
+    - partials
+    - partials-signing
+    - repackage-signing-msi
+    - repackage-signing-shippable-l10n-msix
+    - mar-signing
+    - mar-signing-l10n
+    - attribution
+    - attribution-l10n
+    - repackage-deb
+    - repackage-deb-l10n
+
+only-for-build-platforms:
+    - linux-shippable/opt
+    - linux64-shippable/opt
+    - macosx64-shippable/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - win64-aarch64-shippable/opt
+    - linux-devedition/opt
+    - linux64-devedition/opt
+    - macosx64-devedition/opt
+    - win32-devedition/opt
+    - win64-devedition/opt
+    - win64-aarch64-devedition/opt
+    - linux64-asan-reporter-shippable/opt
+    - win64-asan-reporter-shippable/opt
+
+jobs:
+    beetmover-repackage:
+        from-deps:
+            group-by: single-locale
+        shipping-phase: promote
+        attributes:
+            artifact_map:
+                by-release-type:
+                    beta|release.*|esr.*: taskcluster/gecko_taskgraph/manifests/firefox_candidates.yml
+                    default: taskcluster/gecko_taskgraph/manifests/firefox_nightly.yml
diff --git a/taskcluster/ci/beetmover-source/kind.yml b/taskcluster/ci/beetmover-source/kind.yml
new file mode 100644
index 0000000000..cd86d812b5
--- /dev/null
+++ b/taskcluster/ci/beetmover-source/kind.yml
@@ -0,0 +1,23 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.beetmover
+    - gecko_taskgraph.transforms.beetmover_source
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-source-signing
+
+jobs:
+    beetmover-source:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: promote
+        attributes:
+            artifact_map: taskcluster/gecko_taskgraph/manifests/source_files.yml
diff --git a/taskcluster/ci/bootstrap/kind.yml b/taskcluster/ci/bootstrap/kind.yml
new file mode 100644
index 0000000000..0ce8f8f68a
--- /dev/null
+++ b/taskcluster/ci/bootstrap/kind.yml
@@ -0,0 +1,103 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.bootstrap:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+jobs:
+    debian11:
+        image: debian:bullseye
+        pre-commands:
+            - apt-get update
+            - apt-get install -y --no-install-recommends curl mercurial python3-pip
+    debian12:
+        image: debian:bookworm
+        pre-commands:
+            - apt-get update
+            - apt-get install -y --no-install-recommends curl mercurial python3-pip
+    debian13:
+        image: debian:trixie
+        pre-commands:
+            - apt-get update
+            - apt-get install -y --no-install-recommends curl mercurial python3-pip
+    ubuntu2204:
+        image: ubuntu:jammy
+        pre-commands:
+            - apt-get update
+            - apt-get install -y --no-install-recommends curl mercurial python3-pip
+    ubuntu2304:
+        image: ubuntu:lunar
+        pre-commands:
+            - apt-get update
+            - apt-get install -y --no-install-recommends curl mercurial python3-pip
+    ubuntu2310:
+        image: ubuntu:mantic
+        pre-commands:
+            - apt-get update
+            # For some reason, this is required, now.
+            - export DEBIAN_FRONTEND=noninteractive
+            - apt-get install -y --no-install-recommends curl mercurial python3-pip
+    fedora36:
+        image: fedora:36
+        pre-commands:
+            - dnf install -y mercurial python3-pip
+    fedora37:
+        image: fedora:37
+        pre-commands:
+            - dnf install -y mercurial python3-pip
+            # Work around https://bz.mercurial-scm.org/show_bug.cgi?id=6761
+            - mkdir -p /etc/mercurial/hgrc.d
+            - (echo "[devel]"; echo discovery.randomize=false) > /etc/mercurial/hgrc.d/workaround.rc
+    fedora38:
+        image: fedora:38
+        pre-commands:
+            - dnf install -y mercurial python3-pip
+    fedora39:
+        image: fedora:39
+        pre-commands:
+            - dnf install -y mercurial python3-pip
+    rockylinux8:
+        image: rockylinux:8
+        pre-commands:
+            - dnf install -y mercurial python38-pip
+    rockylinux9:
+        image: rockylinux:9
+        pre-commands:
+            # Mercurial is in EPEL. https://wiki.rockylinux.org/rocky/repo/#notes-on-epel
+            - dnf install -y epel-release
+            - dnf install -y mercurial python3-pip
+    opensuse-leap:
+        image: opensuse/leap
+        pre-commands:
+            - zypper install -y curl mercurial python311-pip python311-curses gzip
+            # We can't replace /usr/bin/python3 because mercurial uses that, so
+            # we override it via /usr/local/bin.
+            - ln -s /usr/bin/python3.11 /usr/local/bin/python3
+            # Make the shell forget about where it found python3 in the past.
+            - hash -r python3
+    opensuse-tumbleweed:
+        image: opensuse/tumbleweed
+        pre-commands:
+            - zypper install -y mercurial python3-pip
+    gentoo:
+        image: gentoo/stage3
+        pre-commands:
+            - emerge --sync
+            - emerge mercurial dev-python/pip
+    archlinux:
+        image: archlinux
+        pre-commands:
+            - pacman -Syu --noconfirm mercurial python-pip
+    voidlinux:
+        image: voidlinux/voidlinux
+        pre-commands:
+            - sed -i s/alpha.de.repo.voidlinux.org/repo-default.voidlinux.org/g /usr/share/xbps.d/*
+            - xbps-install -Suyv xbps
+            - xbps-install -Suyv curl mercurial python3-pip
diff --git a/taskcluster/ci/bouncer-locations/kind.yml b/taskcluster/ci/bouncer-locations/kind.yml
new file mode 100644
index 0000000000..4234939369
--- /dev/null
+++ b/taskcluster/ci/bouncer-locations/kind.yml
@@ -0,0 +1,52 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - post-beetmover-dummy
+
+transforms:
+    - gecko_taskgraph.transforms.bouncer_locations:transforms
+    - gecko_taskgraph.transforms.release:run_on_releases
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    description: nightly bouncer locations job
+    attributes:
+        shippable: true
+    worker-type: bouncer
+    worker:
+        implementation: bouncer-locations
+    scopes:
+        by-project:
+            mozilla-central:
+                - project:releng:bouncer:action:locations
+                - project:releng:bouncer:server:production
+            default:
+                - project:releng:bouncer:action:locations
+                - project:releng:bouncer:server:staging
+    shipping-phase: ship
+    treeherder:
+        symbol: BncLoc
+        kind: other
+        tier: 1
+
+jobs:
+    firefox:
+        run-on-releases: ['nightly']
+        run-on-projects: ['mozilla-central']
+        shipping-product: firefox
+        bouncer-products:
+            - firefox-nightly-latest
+            - firefox-nightly-latest-ssl
+            - firefox-nightly-latest-l10n
+            - firefox-nightly-latest-l10n-ssl
+            - firefox-nightly-msi-latest-ssl
+            - firefox-nightly-msi-latest-l10n-ssl
+            - firefox-nightly-pkg-latest-ssl
+            - firefox-nightly-pkg-latest-l10n-ssl
+        treeherder:
+            platform: firefox-release/opt
diff --git a/taskcluster/ci/build-fat-aar/kind.yml b/taskcluster/ci/build-fat-aar/kind.yml
new file mode 100644
index 0000000000..3d45e76d79
--- /dev/null
+++ b/taskcluster/ci/build-fat-aar/kind.yml
@@ -0,0 +1,200 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - build
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.build:transforms
+    - gecko_taskgraph.transforms.build_attrs:transforms
+    - gecko_taskgraph.transforms.build_lints:transforms
+    - gecko_taskgraph.transforms.build_fat_aar:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.artifact:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    attributes:
+        artifact_map: taskcluster/gecko_taskgraph/manifests/fennec_geckoview.yml
+    index:
+        product: mobile
+    worker-type: b-linux-gcp
+    use-system-python: false
+    worker:
+        docker-image: {in-tree: android-build}
+        max-run-time: 7200
+        env:
+            # Online in order to download the per-architecture AARs.
+            GRADLE_USER_HOME: "/builds/worker/checkouts/build/gecko/mobile/android/gradle/dotgradle-online"
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            MOZ_ANDROID_FAT_AAR_ARCHITECTURES: "armeabi-v7a,arm64-v8a,x86,x86_64"
+            MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE: system
+        artifacts:
+            - name: public/build/maven
+              path: /builds/worker/workspace/obj-build/gradle/maven/
+              type: directory
+            - name: public/build/target.maven.tar.xz
+              path: /builds/worker/workspace/obj-build/gradle/target.maven.tar.xz
+              type: file
+            - name: public/build
+              path: /builds/worker/artifacts/
+              type: directory
+            - name: public/build/geckoview-androidTest.apk
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview/outputs/apk/androidTest/withGeckoBinaries/debug/geckoview-withGeckoBinaries-debug-androidTest.apk
+              type: file
+            - name: public/build/geckoview-test_runner.apk
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/test_runner/outputs/apk/withGeckoBinaries/debug/test_runner-withGeckoBinaries-debug.apk
+              type: file
+            - name: public/build/geckoview-test_runner.aab
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/test_runner/outputs/bundle/withGeckoBinariesDebug/test_runner-withGeckoBinaries-debug.aab
+              type: file
+            - name: public/build/geckoview_example.apk
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview_example/outputs/apk/withGeckoBinaries/debug/geckoview_example-withGeckoBinaries-debug.apk
+              type: file
+            - name: public/build/geckoview_example.aab
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview_example/outputs/bundle/withGeckoBinariesDebug/geckoview_example-withGeckoBinaries-debug.aab
+              type: file
+    run:
+        using: mozharness
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        mozconfig-variant: null
+        tooltool-downloads: internal
+        # Note: These settings are only honored by nightly (i.e. shipping) builds
+        update-channel:
+            by-release-type:
+                nightly:
+                    by-project:
+                        try: nightly-try
+                        default: nightly
+                nightly-larch: nightly-larch
+                nightly-oak: nightly-oak
+                nightly-pine: nightly-pine
+                beta:
+                    by-shipping-product:
+                        devedition: aurora
+                        default: beta
+                release.*: release
+                esr.*: esr
+                default: null
+    fetches:
+        toolchain:
+            - android-ndk-linux
+            - android-sdk-linux
+            - linux64-clang
+            - linux64-jdk
+            - linux64-rust-android
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-nasm
+            - linux64-node
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+jobs:
+    android-geckoview-fat-aar-shippable/opt:
+        description: "Android GeckoView multi-architecture fat AAR Shippable"
+        attributes:
+            shippable: true
+            enable-full-crashsymbols: true
+            disable-push-apk: true
+            maven_packages:
+                - geckoview
+        shipping-phase: build
+        shipping-product: fennec
+        index:
+            job-name: android-geckoview-fat-aar-opt
+            type: shippable-with-multi-l10n
+        treeherder:
+            platform: android-5-0-geckoview-fat-aar-shippable/opt
+            symbol: Bgv
+        dependencies:
+            android-x86-shippable: build-android-x86-shippable/opt
+            android-x86_64-shippable: build-android-x86_64-shippable/opt
+            android-arm-shippable: build-android-arm-shippable/opt
+            android-aarch64-shippable: build-android-aarch64-shippable/opt
+        worker:
+            env:
+                PERFHERDER_EXTRA_OPTIONS: android-geckoview-fat-aar-nightly
+        run:
+            actions: [get-secrets, build, multi-l10n]
+            config:
+                - builds/releng_base_android_64_builds.py
+                - taskcluster_nightly.py
+            custom-build-variant-cfg: arm
+        fetches:
+            toolchain:
+                - android-gradle-dependencies
+        optimization:
+            skip-unless-backstop: null
+
+    android-geckoview-fat-aar-shippable-lite/opt:
+        description: "Android GeckoView Lite multi-architecture fat AAR Shippable"
+        attributes:
+            shippable: true
+            enable-full-crashsymbols: true
+            disable-push-apk: true
+            maven_packages:
+                - geckoview
+                - geckoview-exoplayer2
+        shipping-phase: build
+        shipping-product: fennec
+        index:
+            job-name: android-geckoview-fat-aar-opt-lite
+            type: shippable-with-multi-l10n
+        treeherder:
+            platform: android-4-1-geckoview-fat-aar-shippable/opt
+            symbol: Bgvl
+        dependencies:
+            android-x86-shippable-lite: build-android-x86-shippable-lite/opt
+            android-x86_64-shippable-lite: build-android-x86_64-shippable-lite/opt
+            android-arm-shippable-lite: build-android-arm-shippable-lite/opt
+            android-aarch64-shippable-lite: build-android-aarch64-shippable-lite/opt
+        worker:
+            env:
+                PERFHERDER_EXTRA_OPTIONS: android-geckoview-fat-aar-nightly-lite
+        run:
+            actions: [get-secrets, build, multi-l10n]
+            config:
+                - builds/releng_base_android_64_builds.py
+                - taskcluster_nightly.py
+            custom-build-variant-cfg: arm-lite
+        fetches:
+            toolchain:
+                - android-gradle-dependencies-lite
+        optimization:
+            skip-unless-backstop: null
+
+    android-geckoview-fat-aar/opt:
+        description: "Android GeckoView multi-architecture fat AAR Opt"
+        attributes:
+            maven_packages:
+                - geckoview
+        index:
+            job-name: android-geckoview-fat-aar-opt
+        treeherder:
+            platform: android-5-0-geckoview-fat-aar/opt
+            symbol: Bgv
+        dependencies:
+            android-x86-opt: build-android-x86/opt
+            android-x86_64-opt: build-android-x86_64/opt
+            android-arm-opt: build-android-arm/opt
+            android-aarch64-opt: build-android-aarch64/opt
+        worker:
+            env:
+                PERFHERDER_EXTRA_OPTIONS: android-geckoview-fat-aar-opt
+                USE_ARTIFACT: '1'
+                MOZ_ARTIFACT_TASK: {task-reference: '<android-arm-opt>'}
+        run:
+            actions: [get-secrets, build]
+            config: ["builds/releng_base_android_64_builds.py"]
+            custom-build-variant-cfg: arm
+        fetches:
+            toolchain:
+                - linux64-sccache
+                - android-gradle-dependencies
diff --git a/taskcluster/ci/build-mac-notarization/kind.yml b/taskcluster/ci/build-mac-notarization/kind.yml
new file mode 100644
index 0000000000..8d049b3695
--- /dev/null
+++ b/taskcluster/ci/build-mac-notarization/kind.yml
@@ -0,0 +1,34 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.mac_notarization
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - build-mac-signing
+
+only-for-attributes:
+    - shippable
+
+jobs:
+    build-mac-notarization:
+        from-deps:
+            group-by: single-with-filters
+            copy-attributes: true
+        treeherder:
+            symbol: BMN
+        upstream-artifacts:
+            - taskType: signing
+              paths:
+                  - public/build/target.tar.gz
+                  - public/build/target.pkg
+              formats: ["apple_notarization"]
+              taskId:
+                  task-reference: <build-mac-signing>
diff --git a/taskcluster/ci/build-mac-signing/kind.yml b/taskcluster/ci/build-mac-signing/kind.yml
new file mode 100644
index 0000000000..d90813cd96
--- /dev/null
+++ b/taskcluster/ci/build-mac-signing/kind.yml
@@ -0,0 +1,34 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.build_signing
+    - gecko_taskgraph.transforms.signing
+    - gecko_taskgraph.transforms.hardened_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - build
+
+only-for-attributes:
+    - enable-build-signing
+
+only-for-build-platforms:
+    - macosx64-shippable/opt
+    - macosx64-devedition/opt
+    - macosx64/opt
+    - macosx64/debug
+    - macosx64-aarch64/debug
+
+jobs:
+    build-mac-signing:
+        from-deps:
+            group-by: single-with-filters
+        treeherder:
+            symbol: BMS
+        enable-signing-routes: false
diff --git a/taskcluster/ci/build-signing/kind.yml b/taskcluster/ci/build-signing/kind.yml
new file mode 100644
index 0000000000..7e4bbab419
--- /dev/null
+++ b/taskcluster/ci/build-signing/kind.yml
@@ -0,0 +1,34 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps:transforms
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.upstream_artifact_task
+    - gecko_taskgraph.transforms.build_signing
+    - gecko_taskgraph.transforms.signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - build
+    - build-fat-aar
+
+only-for-attributes:
+    - nightly
+    - shippable
+    - enable-build-signing
+
+not-for-build-platforms:
+    - macosx64-shippable/opt
+    - macosx64-devedition/opt
+    - macosx64/opt
+    - macosx64/debug
+    - macosx64-aarch64/debug
+
+jobs:
+    build-signing:
+        from-deps:
+            group-by: platform
diff --git a/taskcluster/ci/build/android-asan.yml b/taskcluster/ci/build/android-asan.yml
new file mode 100644
index 0000000000..4cc846dece
--- /dev/null
+++ b/taskcluster/ci/build/android-asan.yml
@@ -0,0 +1,75 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    attributes:
+        artifact_map: taskcluster/gecko_taskgraph/manifests/fennec_geckoview.yml
+        maven_packages:
+            - geckoview
+    index:
+        product: mobile
+    worker:
+        docker-image: {in-tree: android-build}
+        max-run-time: 7200
+        env:
+            GRADLE_USER_HOME: "/builds/worker/checkouts/gecko/mobile/android/gradle/dotgradle-offline"
+        artifacts:
+            - name: public/build/maven
+              path: /builds/worker/workspace/obj-build/gradle/maven/
+              type: directory
+            - name: public/build/geckoview-androidTest.apk
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview/outputs/apk/androidTest/withGeckoBinaries/debug/geckoview-withGeckoBinaries-debug-androidTest.apk
+              type: file
+            - name: public/build/geckoview-test_runner.apk
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/test_runner/outputs/apk/withGeckoBinaries/debug/test_runner-withGeckoBinaries-debug.apk
+              type: file
+            - name: public/build/geckoview_example.apk
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview_example/outputs/apk/withGeckoBinaries/debug/geckoview_example-withGeckoBinaries-debug.apk
+              type: file
+            - name: public/build
+              path: /builds/worker/artifacts/
+              type: directory
+    run:
+        using: mozharness
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        mozconfig-variant: null
+        tooltool-downloads: internal
+    fetches:
+        toolchain:
+            - android-ndk-linux
+            - android-sdk-linux
+            - linux64-jdk
+            - linux64-rust-android
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-nasm
+            - linux64-node
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+android-x86_64-asan-fuzzing/opt:
+    description: "Android 5.0 x86-64 Fuzzing Opt ASAN"
+    index:
+        job-name: android-x86_64-fuzzing-asan
+    treeherder:
+        platform: android-5-0-x86_64/asan
+        symbol: Bof
+    worker-type: b-linux-large-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android-x86/releng.manifest"
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: fuzzing-asan-tc
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies
+    optimization:
+        skip-unless-expanded: null
diff --git a/taskcluster/ci/build/android-stuff.yml b/taskcluster/ci/build/android-stuff.yml
new file mode 100644
index 0000000000..52bed7b18f
--- /dev/null
+++ b/taskcluster/ci/build/android-stuff.yml
@@ -0,0 +1,53 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    tags:
+        android-stuff: "true"
+    run:
+        mozconfig-variant: null
+
+android-geckoview-docs/opt:
+    description: "Android GeckoView docs"
+    index:
+        product: mobile
+        job-name: android-geckoview-docs
+    treeherder:
+        platform: android-4-1-armv7/opt
+        kind: build
+        tier: 2
+        symbol: A(gv-docs)
+    run-on-projects: [mozilla-central-only]
+    worker-type: b-linux-gcp
+    worker:
+        docker-image: {in-tree: android-build}
+        env:
+            GRADLE_USER_HOME: "/builds/worker/checkouts/gecko/mobile/android/gradle/dotgradle-offline"
+            PERFHERDER_EXTRA_OPTIONS: android-geckoview-docs
+            GECKOVIEW_DOCS_UPLOAD_SECRET: "project/releng/gecko/build/level-{level}/geckoview-docs-upload"
+        artifacts:
+            - name: public/android/geckoview-docs/geckoview-javadoc.jar
+              path: /builds/worker/workspace/obj-build/mobile/android/geckoview/docs/javadoc/withGeckoBinaries-debug/geckoview-javadoc.jar
+              type: file
+        max-run-time: 7200
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_android_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: android-geckoview-docs
+        tooltool-downloads: internal
+    fetches:
+        toolchain:
+            - android-gradle-dependencies
+            - android-sdk-linux
+            - linux64-jdk
+            - linux64-node
+    optimization:
+        skip-unless-changed:
+            - "mobile/android/**/*.java"
+            - "mobile/android/gradle.configure"
+            - "**/*.gradle"
diff --git a/taskcluster/ci/build/android.yml b/taskcluster/ci/build/android.yml
new file mode 100644
index 0000000000..7c37b2680f
--- /dev/null
+++ b/taskcluster/ci/build/android.yml
@@ -0,0 +1,644 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    attributes:
+        artifact_map: taskcluster/gecko_taskgraph/manifests/fennec_geckoview.yml
+        maven_packages:
+            - geckoview
+    index:
+        product: mobile
+    worker:
+        docker-image: {in-tree: android-build}
+        max-run-time: 7200
+        env:
+            GRADLE_USER_HOME: "/builds/worker/checkouts/gecko/mobile/android/gradle/dotgradle-offline"
+        artifacts:
+            - name: public/build/maven
+              path: /builds/worker/workspace/obj-build/gradle/maven/
+              type: directory
+            - name: public/build/target.maven.tar.xz
+              path: /builds/worker/workspace/obj-build/gradle/target.maven.tar.xz
+              type: file
+            - name: public/build/geckoview-androidTest.apk
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview/outputs/apk/androidTest/withGeckoBinaries/debug/geckoview-withGeckoBinaries-debug-androidTest.apk
+              type: file
+            - name: public/build/geckoview-test_runner.apk
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/test_runner/outputs/apk/withGeckoBinaries/debug/test_runner-withGeckoBinaries-debug.apk
+              type: file
+            - name: public/build/geckoview-test_runner.aab
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/test_runner/outputs/bundle/withGeckoBinariesDebug/test_runner-withGeckoBinaries-debug.aab
+              type: file
+            - name: public/build/geckoview_example.apk
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview_example/outputs/apk/withGeckoBinaries/debug/geckoview_example-withGeckoBinaries-debug.apk
+              type: file
+            - name: public/build/geckoview_example.aab
+              path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview_example/outputs/bundle/withGeckoBinariesDebug/geckoview_example-withGeckoBinaries-debug.aab
+              type: file
+            - name: public/build
+              path: /builds/worker/artifacts/
+              type: directory
+    run:
+        using: mozharness
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        mozconfig-variant: null
+        tooltool-downloads: internal
+    fetches:
+        toolchain:
+            - android-ndk-linux
+            - android-sdk-linux
+            - linux64-jdk
+            - linux64-rust-android
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-nasm
+            - linux64-node
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+android-arm/debug:
+    description: "Android 5.0 Arm Debug"
+    index:
+        job-name: android-arm-debug
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: android-5-0-armv7/debug
+        symbol: B
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: arm-debug
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies
+
+android-x86/opt:
+    description: "Android 5.0 x86 Opt"
+    index:
+        job-name: android-x86-opt
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: android-5-0-x86/opt
+        symbol: B
+    run-on-projects: ['integration']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android-x86/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: x86
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies
+
+android-x86-lite/opt:
+    description: "Android 4.1 x86 Opt"
+    index:
+        job-name: android-x86-lite-opt
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: android-4-1-x86/opt
+        symbol: Bl
+    run-on-projects: ['integration']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android-x86/releng.manifest"
+            PERFHERDER_EXTRA_OPTIONS: lite
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: x86-lite
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies-lite
+
+android-x86-shippable/opt:
+    description: "Android 5.0 x86 Shippable"
+    use-pgo: true
+    attributes:
+        enable-full-crashsymbols: true
+        shippable: true
+    shipping-phase: build
+    shipping-product: fennec
+    index:
+        job-name: android-x86-opt
+        type: android-shippable
+    treeherder:
+        platform: android-5-0-x86-shippable/opt
+        symbol: B
+    run-on-projects: ['release']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android-x86/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build, multi-l10n]
+        config:
+            - builds/releng_base_android_64_builds.py
+            - taskcluster_nightly.py
+        custom-build-variant-cfg: x86
+    fetches:
+        toolchain:
+            - linux64-clang
+            - android-gradle-dependencies
+
+android-x86-shippable-lite/opt:
+    description: "Android 4.1 x86 Shippable Lite"
+    use-pgo: android-x86-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+        shippable: true
+    shipping-phase: build
+    shipping-product: fennec
+    index:
+        job-name: android-x86-lite-opt
+        type: android-shippable
+    treeherder:
+        platform: android-4-1-x86-shippable-lite/opt
+        symbol: Bl
+    run-on-projects: ['release']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android-x86/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build, multi-l10n]
+        config:
+            - builds/releng_base_android_64_builds.py
+            - taskcluster_nightly.py
+        custom-build-variant-cfg: x86-lite
+    fetches:
+        toolchain:
+            - linux64-clang
+            - android-gradle-dependencies-lite
+
+android-arm/opt:
+    description: "Android 5.0 Arm Opt"
+    index:
+        job-name: android-arm-opt
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: android-5-0-armv7/opt
+        symbol: B
+    run-on-projects: ['integration']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: arm
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - android-gradle-dependencies
+            - linux64-sccache
+
+android-arm-lite/opt:
+    description: "Android 4.1 Arm Opt Lite"
+    index:
+        job-name: android-arm-lite-opt
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: android-4-1-armv7/opt
+        symbol: Bl
+    run-on-projects: ['integration']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: arm-lite
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies-lite
+
+android-arm-shippable/opt:
+    description: "Android 5.0 Arm Shippable"
+    use-pgo: android-x86-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+        shippable: true
+    shipping-phase: build
+    shipping-product: fennec
+    index:
+        job-name: android-arm-opt
+        type: android-shippable-with-multi-l10n
+    treeherder:
+        platform: android-5-0-armv7-shippable/opt
+        symbol: Bpgo(B)
+    run-on-projects: ['release']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build, multi-l10n]
+        config:
+            - builds/releng_base_android_64_builds.py
+            - taskcluster_nightly.py
+        custom-build-variant-cfg: arm
+    fetches:
+        toolchain:
+            - linux64-clang
+            - android-gradle-dependencies
+
+android-arm-shippable-lite/opt:
+    description: "Android 4.1 Arm Shippable Lite"
+    use-pgo: android-x86-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+        shippable: true
+    shipping-phase: build
+    shipping-product: fennec
+    index:
+        job-name: android-arm-lite-opt
+        type: android-shippable-with-multi-l10n
+    treeherder:
+        platform: android-4-1-armv7-shippable-lite/opt
+        symbol: Bpgo(Bl)
+    run-on-projects: ['release']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build, multi-l10n]
+        config:
+            - builds/releng_base_android_64_builds.py
+            - taskcluster_nightly.py
+        custom-build-variant-cfg: arm-lite
+    fetches:
+        toolchain:
+            - linux64-clang
+            - android-gradle-dependencies-lite
+
+android-aarch64/opt:
+    description: "Android 5.0 AArch64 Opt"
+    index:
+        job-name: android-aarch64-opt
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: android-5-0-aarch64/opt
+        symbol: B
+    run-on-projects: ['integration']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: aarch64
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies
+
+android-aarch64-lite/opt:
+    description: "Android 5.0 AArch64 Opt Lite"
+    index:
+        job-name: android-aarch64-lite-opt
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: android-5-0-aarch64/opt
+        symbol: Bl
+    run-on-projects: ['integration']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            PERFHERDER_EXTRA_OPTIONS: lite
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: aarch64-lite
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies-lite
+
+android-aarch64/debug:
+    description: "Android 5.0 AArch64 Debug"
+    index:
+        job-name: android-aarch64-debug
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: android-5-0-aarch64/debug
+        symbol: B
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: aarch64-debug
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies
+
+android-aarch64-shippable/opt:
+    description: "Android 5.0 AArch64 Shippable"
+    use-pgo: android-aarch64-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+        shippable: true
+    shipping-phase: build
+    shipping-product: fennec
+    index:
+        job-name: android-aarch64-opt
+        type: android-shippable
+    treeherder:
+        platform: android-5-0-aarch64-shippable/opt
+        symbol: Bpgo(B)
+    run-on-projects: ['release']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build, multi-l10n]
+        config:
+            - builds/releng_base_android_64_builds.py
+            - taskcluster_nightly.py
+        custom-build-variant-cfg: aarch64
+    fetches:
+        toolchain:
+            - linux64-clang
+            - android-gradle-dependencies
+
+android-aarch64-shippable-lite/opt:
+    description: "Android 5.0 AArch64 Shippable Lite"
+    use-pgo: android-aarch64-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+        shippable: true
+    shipping-phase: build
+    shipping-product: fennec
+    index:
+        job-name: android-aarch64-lite-opt
+        type: android-shippable
+    treeherder:
+        platform: android-5-0-aarch64-shippable-lite/opt
+        symbol: Bpgo(Bl)
+    run-on-projects: ['release']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: lite
+    run:
+        actions: [get-secrets, build, multi-l10n]
+        config:
+            - builds/releng_base_android_64_builds.py
+            - taskcluster_nightly.py
+        custom-build-variant-cfg: aarch64-lite
+    fetches:
+        toolchain:
+            - linux64-clang
+            - android-gradle-dependencies-lite
+
+android-x86_64/opt:
+    description: "Android 5.0 x86-64 Opt"
+    index:
+        job-name: android-x86_64-opt
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: android-5-0-x86_64/opt
+        symbol: B
+    run-on-projects: ['integration']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android-x86/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: x86_64
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies
+
+android-x86_64-lite/opt:
+    description: "Android 5.0 x86-64 Opt Lite"
+    index:
+        job-name: android-x86_64-lite-opt
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: android-5-0-x86_64/opt
+        symbol: Bl
+    run-on-projects: ['integration']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android-x86/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: lite
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: x86_64-lite
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies-lite
+
+android-x86_64-fuzzing/debug:
+    description: "Android x86_64 Fuzzing Debug"
+    index:
+        job-name: android-x86_64-fuzzing-debug
+    treeherder:
+        platform: android-5-0-x86_64/debug
+        symbol: Bf
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android-x86/releng.manifest"
+            PERFHERDER_EXTRA_OPTIONS: fuzzing
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: fuzzing-debug
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies
+    optimization:
+        skip-unless-expanded: null
+
+android-x86_64-shippable/opt:
+    description: "Android 5.0 x86-64 Shippable"
+    use-pgo: true
+    attributes:
+        enable-full-crashsymbols: true
+        shippable: true
+    shipping-phase: build
+    shipping-product: fennec
+    index:
+        job-name: android-x86_64-opt
+        type: android-shippable
+    treeherder:
+        platform: android-5-0-x86_64-shippable/opt
+        symbol: B
+    run-on-projects: ['release']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android-x86/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build, multi-l10n]
+        config:
+            - builds/releng_base_android_64_builds.py
+            - taskcluster_nightly.py
+        custom-build-variant-cfg: x86_64
+    fetches:
+        toolchain:
+            - linux64-clang
+            - android-gradle-dependencies
+
+android-x86_64-shippable-lite/opt:
+    description: "Android 5.0 x86-64 Shippable Lite"
+    use-pgo: android-x86_64-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+        shippable: true
+    shipping-phase: build
+    shipping-product: fennec
+    index:
+        job-name: android-x86_64-lite-opt
+        type: android-shippable
+    treeherder:
+        platform: android-5-0-x86_64-shippable-lite/opt
+        symbol: Bl
+    run-on-projects: ['release']
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android-x86/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: lite
+    run:
+        actions: [get-secrets, build, multi-l10n]
+        config:
+            - builds/releng_base_android_64_builds.py
+            - taskcluster_nightly.py
+        custom-build-variant-cfg: x86_64-lite
+    fetches:
+        toolchain:
+            - linux64-clang
+            - android-gradle-dependencies-lite
+
+android-x86_64/debug:
+    description: "Android 5.0 x86-64 Debug"
+    index:
+        job-name: android-x86_64-debug
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: android-5-0-x86_64/debug
+        symbol: B
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android-x86/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: x86_64-debug
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies
+
+android-x86_64/debug-isolated-process:
+    description: "Android 5.0 x86-64 Debug with Isolated Process"
+    index:
+        job-name: android-x86_64-debug-isolated-process
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: android-5-0-x86_64/debug-isolated-process
+        symbol: Bip
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android-x86/releng.manifest"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: isolated-process
+    run:
+        actions: [get-secrets, build]
+        config: ["builds/releng_base_android_64_builds.py"]
+        custom-build-variant-cfg: x86_64-debug-isolated-process
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - android-gradle-dependencies
diff --git a/taskcluster/ci/build/kind.yml b/taskcluster/ci/build/kind.yml
new file mode 100644
index 0000000000..886f1ef433
--- /dev/null
+++ b/taskcluster/ci/build/kind.yml
@@ -0,0 +1,91 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+    - fetch
+    - generate-profile
+
+transforms:
+    - gecko_taskgraph.transforms.build:transforms
+    - gecko_taskgraph.transforms.build_attrs:transforms
+    - gecko_taskgraph.transforms.build_lints:transforms
+    - gecko_taskgraph.transforms.release_notifications:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.artifact:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+jobs-from:
+    - android.yml
+    - android-asan.yml
+    - android-stuff.yml
+    - linux.yml
+    - linux-base-toolchains.yml
+    - macosx.yml
+    - macosx-native.yml
+    - windows.yml
+    - windows-mingw.yml
+
+job-defaults:
+    worker:
+        env:
+            MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE: system
+    use-system-python: false
+    run:
+        mozconfig-variant:
+            by-release-type:
+                beta: beta
+                release.*: release
+                # We keep using the release configs as the beta and release configs are
+                # identical except for
+                # https://searchfox.org/mozilla-central/rev/ce9ff94ffed34dc17ec0bfa406156d489eaa8ee1/browser/config/mozconfigs/linux32/release#1    # noqa
+                esr.*: release
+                default: nightly
+        # Note: These settings are only honored by nightly (i.e. shipping) builds
+        update-channel:
+            by-release-type:
+                nightly:
+                    by-project:
+                        try: nightly-try
+                        default: nightly
+                nightly-larch: nightly-larch
+                nightly-oak: nightly-oak
+                nightly-pine: nightly-pine
+                beta:
+                    by-shipping-product:
+                        devedition: aurora
+                        default: beta
+                release.*: release
+                esr.*: esr
+                default: null
+        # ACCEPTED_MAR_CHANNEL_IDS should usually be the same as the value MAR_CHANNEL_ID.
+        # If more than one ID is needed, then you should use a comma separated list
+        # of values.
+        # The MAR_CHANNEL_ID must not contain the following 3 characters: ",\t "
+        mar-channel-id:
+            by-release-type:
+                nightly-larch: firefox-nightly-larch
+                nightly-oak: firefox-nightly-oak
+                nightly-pine: firefox-nightly-pine
+                beta:
+                    by-shipping-product:
+                        devedition: firefox-mozilla-aurora
+                        default: firefox-mozilla-beta
+                release.*: firefox-mozilla-release
+                esr.*: firefox-mozilla-esr
+                default: firefox-mozilla-central
+        accepted-mar-channel-ids:
+            by-release-type:
+                nightly-larch: firefox-nightly-larch
+                nightly-oak: firefox-nightly-oak
+                nightly-pine: firefox-nightly-pine
+                beta:
+                    by-shipping-product:
+                        devedition: firefox-mozilla-aurora
+                        default: firefox-mozilla-beta,firefox-mozilla-release
+                release.*: firefox-mozilla-release
+                esr.*: firefox-mozilla-esr
+                default: firefox-mozilla-central
diff --git a/taskcluster/ci/build/linux-base-toolchains.yml b/taskcluster/ci/build/linux-base-toolchains.yml
new file mode 100644
index 0000000000..1cde0b229f
--- /dev/null
+++ b/taskcluster/ci/build/linux-base-toolchains.yml
@@ -0,0 +1,173 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# We have these build jobs in a separate file because their definitions are
+# different enough from the main Linux build jobs that their presence in
+# linux.yml would make using job-defaults there significantly less useful.
+---
+job-defaults:
+    worker-type: b-linux-gcp
+    run:
+        extra-config:
+            extra_mozconfig_content:
+                # Builds on automation don't normally build geckodriver,
+                # but to ensure we also successfully build geckodriver with
+                # the MSRV, force it to be built.
+                - ac_add_options --enable-geckodriver
+
+linux64-base-toolchains/opt:
+    description: "Linux64 base toolchains Opt"
+    index:
+        product: firefox
+        job-name: linux64-base-toolchains-opt
+    treeherder:
+        platform: linux64/opt
+        symbol: Bb
+    run-on-projects: ['mozilla-central']
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: base-toolchains
+            FORCE_GCC: '1'
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-binutils-2.31.1
+            - linux64-clang-base
+            - linux64-gcc-base
+            - linux64-rust-base
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm-2.14.02
+            - linux64-node-12
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi-clang-8.0
+
+linux64-base-toolchains/debug:
+    description: "Linux64 base toolchains Debug"
+    index:
+        product: firefox
+        job-name: linux64-base-toolchains-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: Bb
+    optimization:
+        skip-unless-expanded: null
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: base-toolchains
+            FORCE_GCC: '1'
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: debug
+        mozconfig-variant: debug
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-binutils-2.31.1
+            - linux64-clang-base
+            - linux64-gcc-base
+            - linux64-rust-base
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm-2.14.02
+            - linux64-node-12
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi-clang-8.0
+
+linux64-base-toolchains-clang/opt:
+    description: "Linux64 base toolchains clang Opt"
+    index:
+        product: firefox
+        job-name: linux64-base-toolchains-clang-opt
+    treeherder:
+        platform: linux64/opt
+        symbol: Bbc
+    run-on-projects: ['mozilla-central']
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: base-toolchains-clang
+            DISABLE_CLANG_PLUGIN: '1'
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+    fetches:
+        toolchain:
+            - linux64-binutils-2.31.1
+            - linux64-clang-base
+            - linux64-rust-base
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-nasm-2.14.02
+            - linux64-node-12
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi-clang-8.0
+
+linux64-base-toolchains-clang/debug:
+    description: "Linux64 base toolchains clang Debug"
+    index:
+        product: firefox
+        job-name: linux64-base-toolchains-clang-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: Bbc
+    optimization:
+        skip-unless-expanded: null
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: base-toolchains-clang
+            DISABLE_CLANG_PLUGIN: '1'
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: debug
+        mozconfig-variant: debug
+        tooltool-downloads: public
+    fetches:
+        toolchain:
+            - linux64-binutils-2.31.1
+            - linux64-clang-base
+            - linux64-rust-base
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-nasm-2.14.02
+            - linux64-node-12
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi-clang-8.0
diff --git a/taskcluster/ci/build/linux.yml b/taskcluster/ci/build/linux.yml
new file mode 100644
index 0000000000..73301313d6
--- /dev/null
+++ b/taskcluster/ci/build/linux.yml
@@ -0,0 +1,1799 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-linux-gcp
+
+linux64/opt:
+    description: "Linux64 Opt"
+    index:
+        product: firefox
+        job-name: linux64-opt
+    attributes:
+        enable-build-signing: true
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: linux64/opt
+        symbol: B
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            # bug 1690154 - enable full symbols on all branches, but only
+            # upload them on the official set. In conjunction with
+            # `enable-full-crashsymbols`.
+            MOZ_ENABLE_FULL_SYMBOLS: "1"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+    run-on-projects: ['integration']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-x11/opt:
+    description: "Linux64 Opt (X11-only)"
+    index:
+        product: firefox
+        job-name: linux64-x11-opt
+    treeherder:
+        platform: linux64/opt
+        symbol: Bx
+        tier: 2
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: x11
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+    run-on-projects: ['integration']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu-x11
+            - sysroot-wasm32-wasi
+
+linux64-plain/opt:
+    description: "Linux64 Opt Plain"
+    index:
+        product: firefox
+        job-name: linux64-plain-opt
+    treeherder:
+        platform: linux64/opt
+        symbol: Bp
+        tier: 1
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: plain
+    run:
+        using: mozharness
+        actions: [build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: mozharness/scripts/fx_desktop_build.py
+        tooltool-downloads: public
+        extra-config:
+            disable_package_metrics: true
+        mozconfig-variant: plain-opt
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux64-non-unified/plain:
+    description: "Linux64 Plain Hybrid"
+    index:
+        product: firefox
+        job-name: linux64-non-unified-plain
+    treeherder:
+        platform: linux64/plain
+        symbol: Bp-nu
+        tier: 1
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: non-unified
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        tooltool-downloads: public
+        extra-config:
+            disable_package_metrics: true
+        mozconfig-variant: non-unified
+    run-on-projects: ['integration']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-gcc/opt:
+    description: "Linux64 GCC Opt"
+    index:
+        product: firefox
+        job-name: linux64-gcc-opt
+    treeherder:
+        platform: linux64/opt
+        symbol: Bgcc
+        tier: 2
+    run-on-projects: ['mozilla-central']
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: gcc
+            FORCE_GCC: '1'
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-binutils
+            - linux64-clang
+            - linux64-gcc-11
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-plain-clang-trunk/opt:
+    description: "Linux64 Opt Plain with clang trunk"
+    index:
+        product: firefox
+        job-name: linux64-plain-opt-ct
+    treeherder:
+        platform: linux64/opt
+        symbol: Bp-clang-trunk
+        tier: 2
+    worker:
+        max-run-time: 5400
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: plain-clang-trunk
+    run:
+        using: mozharness
+        actions: [build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: mozharness/scripts/fx_desktop_build.py
+        tooltool-downloads: public
+        extra-config:
+            disable_package_metrics: true
+        mozconfig-variant: plain-opt-trunk
+    run-on-projects: []
+    fetches:
+        toolchain:
+            - linux64-clang-trunk
+            - linux64-rust
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-toolchain-sysroot
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux64-fuzzing/debug:
+    description: "Linux64 Fuzzing Debug"
+    index:
+        product: firefox
+        job-name: linux64-fuzzing-debug
+    attributes:
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: linux64/debug
+        symbol: Bf
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: fuzzing
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: fuzzing-debug
+        mozconfig-variant: debug-fuzzing
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-sccache
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux64-fuzzing-noopt/debug:
+    description: "Linux64 Fuzzing No-optimize Debug"
+    index:
+        product: firefox
+        job-name: linux64-fuzzing-noopt-debug
+    attributes:
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: linux64-noopt/debug
+        symbol: Bf
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: fuzzing-noopt-debug
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: fuzzing-debug
+        mozconfig-variant: debug-fuzzing-noopt
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-sccache
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux64/debug:
+    description: "Linux64 Debug"
+    index:
+        product: firefox
+        job-name: linux64-debug
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: linux64/debug
+        symbol: B
+    worker:
+        max-run-time: 5400
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            # bug 1690154 - enable full symbols on all branches, but only
+            # upload them on the official set. In conjunction with
+            # `enable-full-crashsymbols`.
+            MOZ_ENABLE_FULL_SYMBOLS: "1"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: debug
+        mozconfig-variant: debug
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-plain/debug:
+    description: "Linux64 Debug Plain"
+    index:
+        product: firefox
+        job-name: linux64-plain-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: Bp
+        tier: 1
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: plain
+    run:
+        using: mozharness
+        actions: [build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        extra-config:
+            disable_package_metrics: true
+        mozconfig-variant: plain-debug
+        script: mozharness/scripts/fx_desktop_build.py
+        tooltool-downloads: public
+    run-on-projects: [trunk]
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux64-devedition/opt:
+    description: "Linux64 devedition (shippable)"
+    use-pgo: linux64-shippable/opt
+    attributes:
+        shippable: true
+        enable-full-crashsymbols: true
+    shipping-phase: build
+    shipping-product: devedition
+    index:
+        product: devedition
+        job-name: linux64-opt
+        type: shippable
+    treeherder:
+        platform: linux64-devedition/opt
+        symbol: B
+    worker-type: b-linux-xlarge-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            # bug 1690154 - enable full symbols on all branches, but only
+            # upload them on the official set. In conjunction with
+            # `enable-full-crashsymbols`.
+            MOZ_ENABLE_FULL_SYMBOLS: "1"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            stage_platform: 'linux64-devedition'
+            max_build_output_timeout: 3600
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+        mozconfig-variant: devedition
+    run-on-projects: ['mozilla-beta']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux/opt:
+    description: "Linux32 Opt"
+    index:
+        product: firefox
+        job-name: linux-opt
+    attributes:
+        enable-build-signing: true
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: linux32/opt
+        symbol: B
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_32_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+    run-on-projects:
+        - 'mozilla-beta'
+        - 'mozilla-release'
+        - 'mozilla-esr115'
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-i686-linux-gnu
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux-fuzzing/debug:
+    description: "Linux32 Fuzzing Debug"
+    index:
+        product: firefox
+        job-name: linux-fuzzing-debug
+    attributes:
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: linux32/debug
+        symbol: Bf
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: fuzzing
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_32_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: fuzzing-debug
+        mozconfig-variant: debug-fuzzing
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux32-llvm-symbolizer
+            - linux64-sccache
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-i686-linux-gnu
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux/debug:
+    description: "Linux32 Debug"
+    index:
+        product: firefox
+        job-name: linux-debug
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: linux32/debug
+        symbol: B
+    worker:
+        max-run-time: 5400
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_32_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: debug
+        mozconfig-variant: debug
+        tooltool-downloads: public
+    run-on-projects: ['release']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-i686-linux-gnu
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux-rusttests/opt:
+    description: "Linux32 Rust Tests Opt"
+    index:
+        product: firefox
+        job-name: linux-rusttests-opt
+    treeherder:
+        platform: linux32/opt
+        symbol: BR
+        tier: 1
+    worker:
+        max-run-time: 2700
+        env:
+            PERFHERDER_EXTRA_OPTIONS: rusttests
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_32_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: rusttests
+        mozconfig-variant: rusttests
+        tooltool-downloads: public
+        keep-artifacts: false
+    run-on-projects: ['mozilla-central']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-i686-linux-gnu
+            - sysroot-x86_64-linux-gnu
+    optimization:
+        test-inclusive: [rusttests]
+
+linux-rusttests/debug:
+    description: "Linux32 Rust Tests Debug"
+    index:
+        product: firefox
+        job-name: linux-rusttests-debug
+    treeherder:
+        platform: linux32/debug
+        symbol: BR
+        tier: 1
+    worker:
+        max-run-time: 2700
+        env:
+            PERFHERDER_EXTRA_OPTIONS: rusttests
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_32_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: rusttests-debug
+        mozconfig-variant: rusttests-debug
+        tooltool-downloads: public
+        keep-artifacts: false
+    run-on-projects: ['mozilla-central']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-i686-linux-gnu
+            - sysroot-x86_64-linux-gnu
+    optimization:
+        test-inclusive: [rusttests]
+
+linux-devedition/opt:
+    description: "Linux32 devedition (shippable)"
+    use-pgo: linux-shippable/opt
+    attributes:
+        shippable: true
+        enable-full-crashsymbols: true
+    shipping-phase: build
+    shipping-product: devedition
+    index:
+        product: devedition
+        job-name: linux-opt
+        type: shippable
+    treeherder:
+        platform: linux32-devedition/opt
+        symbol: B
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_32_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            stage_platform: linux-devedition
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+        mozconfig-variant: devedition
+    run-on-projects: ['mozilla-beta']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-i686-linux-gnu
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux-shippable/opt:
+    description: "Linux32 Shippable"
+    use-pgo: true
+    attributes:
+        shippable: true
+        enable-full-crashsymbols: true
+    shipping-phase: build
+    shipping-product: firefox
+    index:
+        product: firefox
+        job-name: linux-opt
+        type: shippable
+    treeherder:
+        platform: linux32-shippable/opt
+        symbol: Bpgo(B)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 9000
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_32_builds.py
+            - taskcluster_nightly.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+    run-on-projects: ['release']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-i686-linux-gnu
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux-reproduced/opt:
+    description: "Linux32 Reproduced"
+    use-pgo: linux-shippable/opt
+    shipping-phase: build
+    shipping-product: firefox
+    index:
+        product: firefox
+        job-name: linux-reproduced-opt
+    treeherder:
+        platform: linux32-shippable/opt
+        symbol: Bpgo(repr)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 9000
+        env:
+            PERFHERDER_EXTRA_OPTIONS: repr
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_32_builds.py
+            - taskcluster_nightly.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+    # Original comment: Limited to trunk until bug 1596350 is fixed.
+    # Addendum: Do not run on autoland, Bug 1599197
+    run-on-projects: ['mozilla-central', 'comm-central']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-i686-linux-gnu
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux-asan-fuzzing/opt:
+    description: "Linux32 Fuzzing Opt ASAN"
+    index:
+        product: firefox
+        job-name: linux-fuzzing-asan-opt
+    attributes:
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: linux32/asan
+        symbol: Bof
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: asan-fuzzing
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+        max-run-time: 5400
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_32_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: fuzzing-asan-tc
+        mozconfig-variant: nightly-fuzzing-asan
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux32-llvm-symbolizer
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-i686-linux-gnu
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux64-reproduced/opt:
+    description: "Linux64 Reproduced"
+    use-pgo: linux64-shippable/opt
+    shipping-phase: build
+    shipping-product: firefox
+    index:
+        product: firefox
+        job-name: linux64-reproduced-opt
+    treeherder:
+        platform: linux64-shippable/opt
+        symbol: Bpgo(repr)
+    worker-type: b-linux-xlarge-gcp
+    worker:
+        max-run-time: 9000
+        env:
+            PERFHERDER_EXTRA_OPTIONS: repr
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            max_build_output_timeout: 3600
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+    # Original comment: Limited to trunk until bug 1596350 is fixed.
+    # Addendum: Do not run on autoland, Bug 1599197
+    run-on-projects: ['mozilla-central', 'comm-central']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-asan/opt:
+    description: "Linux64 Opt ASAN"
+    index:
+        product: firefox
+        job-name: linux64-asan-opt
+    treeherder:
+        platform: linux64/asan
+        symbol: Bo
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: "opt asan"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+        max-run-time: 5400
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: asan-tc
+        mozconfig-variant: nightly-asan
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-dev
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-tsan/opt:
+    description: "Linux64 Opt TSAN"
+    index:
+        product: firefox
+        job-name: linux64-tsan-opt
+    treeherder:
+        platform: linux64/tsan
+        symbol: Bo
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: "opt tsan"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+        max-run-time: 5400
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: tsan-tc
+        mozconfig-variant: tsan
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-dev
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-tsan-fuzzing/opt:
+    description: "Linux64 Fuzzing Opt TSAN"
+    index:
+        product: firefox
+        job-name: linux64-fuzzing-tsan-opt
+    attributes:
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: linux64/tsan
+        symbol: Bof
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: tsan-fuzzing
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+        max-run-time: 5400
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: fuzzing-tsan-tc
+        mozconfig-variant: tsan-fuzzing
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-dev
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux64-asan-fuzzing/noopt:
+    description: "Linux64 Fuzzing No-optimize ASAN"
+    index:
+        product: firefox
+        job-name: linux64-fuzzing-asan-noopt
+    attributes:
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: linux64-noopt/asan
+        symbol: Bf
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: asan-fuzzing-noopt
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+        max-run-time: 5400
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: fuzzing-asan-tc
+        mozconfig-variant: nightly-fuzzing-asan-noopt
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-dev
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux64-asan-fuzzing-nyx/opt:
+    description: "Linux64 Fuzzing Opt ASAN NYX"
+    index:
+        product: firefox
+        job-name: linux64-fuzzing-asan-nyx-opt
+    attributes:
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: linux64/asan
+        symbol: Bonf
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: asan-fuzzing-nyx
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            AFL_CC: /builds/worker/fetches/clang/bin/clang
+            AFL_CXX: /builds/worker/fetches/clang/bin/clang++
+            AFL_LLVM_INSTRUMENT: llvmnative
+            AFL_LLVM_NO_RPATH: "1"
+        max-run-time: 7200
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: fuzzing-asan-tc
+        mozconfig-variant: nightly-fuzzing-asan-nyx
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-afl-instrumentation
+            - linux64-clang
+            - linux64-rust-dev
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux64-asan-fuzzing-nyx-ccov/opt:
+    description: "Linux64 Fuzzing Opt ASAN NYX w/ Coverage"
+    index:
+        product: firefox
+        job-name: linux64-ccov-fuzzing-asan-nyx-opt
+    attributes:
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: linux64/asan
+        symbol: Bncf
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: asan-fuzzing-ccov-nyx
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            AFL_CC: /builds/worker/fetches/clang/bin/clang
+            AFL_CXX: /builds/worker/fetches/clang/bin/clang++
+            AFL_LLVM_INSTRUMENT: llvmcodecov
+            AFL_LLVM_NO_RPATH: "1"
+        max-run-time: 7200
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: fuzzing-asan-tc
+        mozconfig-variant: nightly-fuzzing-asan-nyx
+        tooltool-downloads: public
+    run-on-projects: ['mozilla-central']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-afl-instrumentation
+            - linux64-clang
+            - linux64-rust-dev
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+
+linux64-asan-fuzzing/opt:
+    description: "Linux64 Fuzzing Opt ASAN"
+    index:
+        product: firefox
+        job-name: linux64-fuzzing-asan-opt
+    attributes:
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: linux64/asan
+        symbol: Bof
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: asan-fuzzing
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+        max-run-time: 5400
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: fuzzing-asan-tc
+        mozconfig-variant: nightly-fuzzing-asan
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-dev
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux64-asan-fuzzing-ccov/opt:
+    description: "Linux64 Fuzzing Opt ASAN w/ Coverage"
+    index:
+        product: firefox
+        job-name: linux64-ccov-fuzzing-asan-opt
+    attributes:
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: linux64/asan
+        symbol: Bocf
+    run-on-projects: ['mozilla-central']
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: asan-fuzzing-ccov
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+        max-run-time: 5400
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        mozconfig-variant: asan-fuzzing-ccov
+        tooltool-downloads: public
+    use-sccache: false
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-fuzzing-ccov/opt:
+    description: "Linux64 Fuzzing Opt w/ Coverage"
+    index:
+        product: firefox
+        job-name: linux64-ccov-fuzzing-opt
+    treeherder:
+        platform: linux64/opt
+        symbol: Bocf
+    run-on-projects: ['mozilla-central']
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: fuzzing-ccov
+            RUSTC_BOOTSTRAP: '1'
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        mozconfig-variant: fuzzing-ccov
+        tooltool-downloads: public
+    use-sccache: false
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux64-asan-reporter-shippable/opt:
+    description: "Linux64 Opt ASAN Reporter (Shippable)"
+    attributes:
+        shippable: true
+    shipping-product:
+        by-release-type:
+            nightly: firefox
+            default: null
+    index:
+        product: firefox
+        job-name: linux64-asan-reporter-opt
+        type: shippable
+    treeherder:
+        platform: linux64-asan-reporter/opt
+        symbol: BoR
+    run-on-projects: ['mozilla-central']
+    worker-type: b-linux-xlarge-gcp
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: asan-reporter
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+        max-run-time: 3600
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            max_build_output_timeout: 3600
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: asan-reporter-tc
+        mozconfig-variant: nightly-asan-reporter
+        tooltool-downloads: public
+        mar-channel-id:
+            firefox-mozilla-central-asan
+        accepted-mar-channel-ids:
+            firefox-mozilla-central-asan
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-asan/debug:
+    description: "Linux64 Debug ASAN"
+    index:
+        product: firefox
+        job-name: linux64-asan-debug
+    treeherder:
+        platform: linux64/asan
+        symbol: Bd
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: "debug asan"
+        max-run-time: 5400
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: asan-tc-and-debug
+        mozconfig-variant: debug-asan
+        tooltool-downloads: public
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-dev
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-llvm-symbolizer
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+linux64-shippable/opt:
+    description: "Linux64 Shippable"
+    use-pgo: true
+    attributes:
+        shippable: true
+        enable-full-crashsymbols: true
+    shipping-phase: build
+    shipping-product: firefox
+    index:
+        product: firefox
+        job-name: linux64-opt
+        type: shippable
+    treeherder:
+        platform: linux64-shippable/opt
+        symbol: Bpgo(B)
+    run-on-projects: ['release']
+    worker-type: b-linux-xlarge-gcp
+    worker:
+        max-run-time: 9000
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            # bug 1690154 - enable full symbols on all branches, but only
+            # upload them on the official set. In conjunction with
+            # `enable-full-crashsymbols`.
+            MOZ_ENABLE_FULL_SYMBOLS: "1"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            max_build_output_timeout: 3600
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-nightlyasrelease/opt:
+    description: "Linux64 Nightly-As-Release"
+    use-pgo: linux64-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+    index:
+        product: firefox
+        job-name: linux64-nightlyasrelease-opt
+    treeherder:
+        platform: linux64-nightlyasrelease/opt
+        symbol: Bpgo(Bnar)
+    run-on-projects: [trunk-only]
+    worker-type: b-linux-xlarge-gcp
+    worker:
+        max-run-time: 9000
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            # bug 1690154 - enable full symbols on all branches, but only
+            # upload them on the official set. In conjunction with
+            # `enable-full-crashsymbols`.
+            MOZ_ENABLE_FULL_SYMBOLS: "1"
+            PERFHERDER_EXTRA_OPTIONS: nightly-as-release
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            max_build_output_timeout: 3600
+        script: "mozharness/scripts/fx_desktop_build.py"
+        mozconfig-variant: nightly-as-release
+        secrets: true
+        tooltool-downloads: public
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-noopt/debug:
+    description: "Linux64 No-optimize Debug"
+    index:
+        product: firefox
+        job-name: linux64-noopt-debug
+    treeherder:
+        platform: linux64-noopt/debug
+        symbol: B
+        tier: 2
+    attributes:
+        enable-full-crashsymbols: true
+    worker:
+        max-run-time: 5400
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: noopt-debug
+        mozconfig-variant: noopt-debug
+        tooltool-downloads: public
+        keep-artifacts: false
+    run-on-projects: ['mozilla-central']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-rusttests/opt:
+    description: "Linux64 Rust Tests Opt"
+    index:
+        product: firefox
+        job-name: linux64-rusttests-opt
+    treeherder:
+        platform: linux64/opt
+        symbol: BR
+        tier: 1
+    worker:
+        max-run-time: 2700
+        env:
+            PERFHERDER_EXTRA_OPTIONS: rusttests
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: rusttests
+        mozconfig-variant: rusttests
+        tooltool-downloads: public
+        keep-artifacts: false
+    run-on-projects: ['mozilla-central']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+    optimization:
+        test-inclusive: [rusttests]
+
+linux64-rusttests/debug:
+    description: "Linux64 Rust Tests Debug"
+    index:
+        product: firefox
+        job-name: linux64-rusttests-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: BR
+        tier: 1
+    worker:
+        max-run-time: 2700
+        env:
+            PERFHERDER_EXTRA_OPTIONS: rusttests
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: rusttests-debug
+        mozconfig-variant: rusttests-debug
+        tooltool-downloads: public
+        keep-artifacts: false
+    run-on-projects: ['trunk']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+    optimization:
+        test-inclusive: [rusttests]
+
+linux64-ccov/opt:
+    description: "Linux64-CCov Opt"
+    index:
+        product: firefox
+        job-name: linux64-ccov-opt
+    treeherder:
+        platform: linux64-ccov/opt
+        symbol: B
+        tier: 2
+    run-on-projects: ['mozilla-central']
+    worker:
+        artifacts:
+            - name: public/code-coverage-grcov.zip
+              path: /builds/worker/workspace/obj-build/code-coverage-grcov.zip
+              type: file
+        max-run-time: 7200
+        env:
+            RUSTC_BOOTSTRAP: '1'
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: code-coverage-opt
+        mozconfig-variant: code-coverage-opt
+        tooltool-downloads: public
+    use-sccache: false
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-grcov
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-ccov/debug:
+    description: "Linux64-CCov Debug"
+    index:
+        product: firefox
+        job-name: linux64-ccov-debug
+    treeherder:
+        platform: linux64-ccov/debug
+        symbol: B
+        tier: 2
+    run-on-projects: []
+    worker:
+        max-run-time: 7200
+        env:
+            RUSTC_BOOTSTRAP: '1'
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: code-coverage-debug
+        mozconfig-variant: code-coverage-debug
+        tooltool-downloads: public
+    use-sccache: false
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-grcov
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-add-on-devel/opt:
+    description: "Linux64 add-on-devel"
+    index:
+        product: firefox
+        job-name: linux64-add-on-devel
+    treeherder:
+        platform: linux64-add-on-devel/opt
+        symbol: B
+        tier: 2
+    worker:
+        max-run-time: 3600
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        custom-build-variant-cfg: add-on-devel
+        mozconfig-variant: add-on-devel
+        tooltool-downloads: public
+    run-on-projects: ['mozilla-beta', 'mozilla-release']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+linux64-aarch64/opt:
+    description: "Linux64 aarch64 Opt"
+    use-pgo: linux64-shippable/opt
+    index:
+        product: firefox
+        job-name: linux64-aarch64-opt
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: linux64-aarch64/opt
+        symbol: B
+        tier: 2
+    worker:
+        max-run-time: 7200
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        extra-config:
+            extra_mozconfig_content:
+                - ac_add_options --target=aarch64
+                - unset MOZ_STDCXX_COMPAT
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        tooltool-downloads: public
+    run-on-projects: ['integration']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-aarch64-linux-gnu
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
diff --git a/taskcluster/ci/build/macosx-native.yml b/taskcluster/ci/build/macosx-native.yml
new file mode 100644
index 0000000000..ad77b6e5aa
--- /dev/null
+++ b/taskcluster/ci/build/macosx-native.yml
@@ -0,0 +1,145 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    index:
+        product: firefox
+    worker-type: b-osx-1015
+    worker:
+        max-run-time: 7200
+    run:
+        using: mozharness
+        script: "mozharness/scripts/fx_desktop_build.py"
+
+macosx64-plain/opt:
+    description: "MacOS X x64 Opt Plain"
+    index:
+        job-name: macosx64-plain-opt
+    treeherder:
+        symbol: Bp
+        platform: osx/opt
+        tier: 1
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: plain
+    run:
+        actions: [build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/taskcluster_base_macosx.py
+        extra-config:
+            disable_package_metrics: true
+            stage_platform: macosx64
+            mozconfig_platform: macosx64
+        mozconfig-variant: plain-opt
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - macosx64-clang
+            - macosx64-cbindgen
+            - macosx64-nasm
+            - macosx64-node
+            - macosx64-rust
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+macosx64-plain/debug:
+    description: "MacOS X x64 Debug Plain"
+    index:
+        job-name: macosx64-plain-debug
+    treeherder:
+        symbol: Bp
+        platform: osx/debug
+        tier: 1
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: plain
+    run:
+        actions: [build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/taskcluster_base_macosx.py
+        extra-config:
+            disable_package_metrics: true
+            stage_platform: macosx64
+            mozconfig_platform: macosx64
+        mozconfig-variant: plain-debug
+    run-on-projects: ['trunk']
+    fetches:
+        toolchain:
+            - macosx64-clang
+            - macosx64-cbindgen
+            - macosx64-nasm
+            - macosx64-node
+            - macosx64-rust
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+macosx64-rusttests/opt:
+    description: "MacOS X x64 Rust Tests Opt"
+    index:
+        job-name: macosx64-rusttests-opt
+    treeherder:
+        platform: macosx64/opt
+        symbol: BR
+        tier: 1
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: rusttests
+    run:
+        actions: [build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/taskcluster_base_macosx.py
+            - builds/releng_sub_mac_configs/rusttests.py
+        extra-config:
+            mozconfig_platform: macosx64
+        mozconfig-variant: rusttests
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - macosx64-clang
+            - macosx64-rust
+            - macosx64-cbindgen
+            - macosx64-nasm
+            - macosx64-node
+            - macosx64-sdk
+    optimization:
+        test-inclusive: [rusttests]
+
+macosx64-rusttests/debug:
+    description: "MacOS X x64 Rust Tests Debug"
+    index:
+        job-name: macosx64-rusttests-debug
+    treeherder:
+        platform: macosx64/debug
+        symbol: BR
+        tier: 1
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: rusttests
+    run:
+        actions: [build]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/taskcluster_base_macosx.py
+            - builds/releng_sub_mac_configs/rusttests.py
+        extra-config:
+            mozconfig_platform: macosx64
+        mozconfig-variant: rusttests-debug
+    run-on-projects: ['trunk']
+    fetches:
+        toolchain:
+            - macosx64-clang
+            - macosx64-rust
+            - macosx64-cbindgen
+            - macosx64-nasm
+            - macosx64-node
+            - macosx64-sdk
+    optimization:
+        test-inclusive: [rusttests]
diff --git a/taskcluster/ci/build/macosx.yml b/taskcluster/ci/build/macosx.yml
new file mode 100644
index 0000000000..0b148f01d5
--- /dev/null
+++ b/taskcluster/ci/build/macosx.yml
@@ -0,0 +1,943 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    index:
+        product: firefox
+    worker-type: b-linux-gcp
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        secrets: true
+        script: "mozharness/scripts/fx_desktop_build.py"
+    fetches:
+        toolchain:
+            - linux64-dump_syms
+            - linux64-hfsplus
+            - linux64-libdmg
+            - linux64-rust-macos
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+            - sysroot-x86_64-linux-gnu
+
+macosx64/debug:
+    description: "MacOS X x64 Cross-compile"
+    index:
+        job-name: macosx64-debug
+    attributes:
+        enable-build-signing: true
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: osx-cross/debug
+        symbol: B
+        tier: 1
+    worker:
+        max-run-time: 5400
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+        custom-build-variant-cfg: cross-debug
+        mozconfig-variant: debug
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64-aarch64/debug:
+    description: "MacOS X Aarch64 Cross-compile"
+    index:
+        job-name: macosx64-aarch64-debug
+    attributes:
+        enable-build-signing: true
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: osx-cross-aarch64/debug
+        symbol: B
+        tier: 1
+    worker:
+        max-run-time: 5400
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: aarch64
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+        custom-build-variant-cfg: cross-debug
+        mozconfig-variant: debug
+        extra-config:
+            extra_mozconfig_content:
+                - ac_add_options --target=aarch64-apple-darwin
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64-non-unified/plain:
+    description: "MacOS X x64 Hybrid Cross-compile"
+    index:
+        job-name: macosx64-non-unified
+    treeherder:
+        platform: osx-cross/plain
+        symbol: Bp-nu
+        tier: 1
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: non-unified
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+        mozconfig-variant: non-unified
+        extra-config:
+            disable_package_metrics: true
+    use-sccache: true
+    run-on-projects: ['integration']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64/opt:
+    description: "MacOS X x64 Cross-compile"
+    index:
+        job-name: macosx64-opt
+    attributes:
+        enable-build-signing: true
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: osx-cross/opt
+        symbol: B
+        tier: 1
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+    run-on-projects: ['integration']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64-asan-fuzzing/opt:
+    description: "MacOS X x64 Cross-compile Fuzzing ASAN"
+    index:
+        job-name: macosx64-fuzzing-asan-opt
+    attributes:
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: osx-cross/asan
+        symbol: Bof
+    worker:
+        max-run-time: 5400
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: asan-fuzzing
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+        custom-build-variant-cfg: cross-fuzzing-asan
+        mozconfig-variant: nightly-fuzzing-asan
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-llvm-symbolizer
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+macosx64-fuzzing/debug:
+    description: "MacOS X x64 Cross-compile Fuzzing Debug"
+    index:
+        job-name: macosx64-fuzzing-debug
+    attributes:
+        enable-full-crashsymbols: true
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: osx-cross/debug
+        symbol: Bf
+    worker:
+        max-run-time: 5400
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: fuzzing
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+        custom-build-variant-cfg: cross-fuzzing-debug
+        mozconfig-variant: debug-fuzzing
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+macosx64-aarch64-asan-fuzzing/opt:
+    description: "MacOS X Aarch64 Cross-compile Fuzzing ASAN"
+    index:
+        job-name: macosx64-aarch64-fuzzing-asan-opt
+    attributes:
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: osx-cross-aarch64/asan
+        symbol: Bof
+    worker:
+        max-run-time: 5400
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: aarch64-asan-fuzzing
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+        custom-build-variant-cfg: cross-fuzzing-asan
+        mozconfig-variant: nightly-fuzzing-asan
+        extra-config:
+            mozconfig_platform: macosx64-aarch64
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-aarch64-llvm-symbolizer
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+macosx64-aarch64-fuzzing/debug:
+    description: "MacOS X Aarch64 Cross-compile Fuzzing Debug"
+    index:
+        job-name: macosx64-aarch64-fuzzing-debug
+    attributes:
+        enable-full-crashsymbols: true
+        # The gtest libxul contains libFuzzer targets
+        skip-verify-test-packaging: true
+    treeherder:
+        platform: osx-cross-aarch64/debug
+        symbol: Bf
+    worker:
+        max-run-time: 5400
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: aarch64-fuzzing
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+        custom-build-variant-cfg: cross-fuzzing-debug
+        mozconfig-variant: debug-fuzzing
+        extra-config:
+            mozconfig_platform: macosx64-aarch64
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-aarch64-llvm-symbolizer
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+macosx64-x64-devedition/opt:
+    description: "MacOS X Dev Edition x64 (shippable)"
+    use-pgo: macosx64-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+        skip-verify-test-packaging: true
+        upload-generated-sources: true
+    shipping-phase: build
+    shipping-product: devedition
+    index:
+        product: devedition
+        job-name: macosx64-x64-opt
+        type: shippable
+    treeherder:
+        platform: osx-cross-devedition/opt
+        symbol: Bx
+        tier: 1
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            stage_platform: macosx64-devedition
+        mozconfig-variant: devedition
+    run-on-projects: ['mozilla-beta']
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - linux64-clang
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64-aarch64-devedition/opt:
+    description: "MacOS X Dev Edition Aarch64 (shippable)"
+    use-pgo: macosx64-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+        skip-verify-test-packaging: true
+        upload-generated-sources: true
+    shipping-phase: build
+    shipping-product: devedition
+    index:
+        product: devedition
+        job-name: macosx64-aarch64-opt
+        type: shippable
+    treeherder:
+        platform: osx-aarch64-devedition/opt
+        symbol: B
+        tier: 1
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: aarch64
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            stage_platform: macosx64-aarch64-devedition
+            mozconfig_platform: macosx64-aarch64
+        mozconfig-variant: devedition
+    run-on-projects: ['mozilla-beta']
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - linux64-clang
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64-devedition/opt:
+    description: "MacOS X Dev Edition Universal"
+    attributes:
+        shippable: true
+        enable-build-signing: true
+        skip-upload-crashsymbols: true
+        skip-verify-test-packaging: true
+    shipping-phase: build
+    shipping-product: devedition
+    index:
+        product: devedition
+        job-name: macosx64-opt
+        type: shippable
+    treeherder:
+        platform: osx-cross-devedition/opt
+        symbol: B
+        tier: 1
+    run-on-projects: ['mozilla-beta']
+    worker:
+        max-run-time: 1800
+    run:
+        job-script: taskcluster/scripts/misc/unify.sh
+        config:
+            - builds/releng_base_firefox.py
+    dependencies:
+        macosx64-x64-devedition-opt: build-macosx64-x64-devedition/opt
+        macosx64-aarch64-devedition-opt: build-macosx64-aarch64-devedition/opt
+    fetches:
+        macosx64-x64-devedition-opt:
+            - artifact: target.dmg
+              extract: false
+              dest: x64
+            - artifact: buildhub.json
+              extract: false
+              dest: ../artifacts
+            - artifact: host/bin/mar
+              extract: false
+              dest: ../artifacts/host/bin
+            - artifact: host/bin/mbsdiff
+              extract: false
+              dest: ../artifacts/host/bin
+            - artifact: target.txt
+              extract: false
+              dest: ../artifacts
+            - artifact: target_info.txt
+              extract: false
+              dest: ../artifacts
+            - artifact: target.json
+              extract: false
+              dest: ../artifacts
+            - artifact: target.mozinfo.json
+              extract: false
+              dest: ../artifacts
+            - artifact: target.test_packages.json
+              extract: false
+              dest: ../artifacts
+            - artifact: target.perftests.tests.tar.gz
+              extract: false
+              dest: ../artifacts
+            - artifact: target.xpt_artifacts.zip
+              extract: false
+              dest: ../artifacts
+            - artifact: target.common.tests.tar.gz
+              dest: x64/common
+            - artifact: target.cppunittest.tests.tar.gz
+              dest: x64/cppunittest
+            - artifact: target.gtest.tests.tar.gz
+              dest: x64/gtest
+            - artifact: target.jittest.tests.tar.gz
+              dest: x64/jittest
+            - artifact: target.jsreftest.tests.tar.gz
+              dest: x64/jsreftest
+            - artifact: target.mochitest.tests.tar.gz
+              dest: x64/mochitest
+            - artifact: target.reftest.tests.tar.gz
+              dest: x64/reftest
+            - artifact: target.talos.tests.tar.gz
+              dest: x64/talos
+            - artifact: target.raptor.tests.tar.gz
+              dest: x64/raptor
+            - artifact: target.condprof.tests.tar.gz
+              dest: x64/confprof
+            - artifact: target.awsy.tests.tar.gz
+              dest: x64/awsy
+            - artifact: target.xpcshell.tests.tar.gz
+              dest: x64/xpcshell
+            - artifact: target.web-platform.tests.tar.gz
+              dest: x64/web-platform
+            - artifact: target.updater-dep.tests.tar.gz
+              dest: x64/updater-dep
+            - artifact: target.crashreporter-symbols.zip
+              dest: x64/crashreporter-symbols
+            - artifact: target.jsshell.zip
+              dest: x64/jsshell
+            - artifact: target.generated-files.tar.gz
+              extract: false
+              dest: ../artifacts
+            - artifact: target.langpack.xpi
+              extract: false
+              dest: ../artifacts
+            - artifact: mozharness.zip
+              extract: false
+              dest: ../artifacts
+        macosx64-aarch64-devedition-opt:
+            - artifact: target.dmg
+              extract: false
+              dest: aarch64
+            - artifact: target.common.tests.tar.gz
+              dest: aarch64/common
+            - artifact: target.cppunittest.tests.tar.gz
+              dest: aarch64/cppunittest
+            - artifact: target.gtest.tests.tar.gz
+              dest: aarch64/gtest
+            - artifact: target.jittest.tests.tar.gz
+              dest: aarch64/jittest
+            - artifact: target.jsreftest.tests.tar.gz
+              dest: aarch64/jsreftest
+            - artifact: target.mochitest.tests.tar.gz
+              dest: aarch64/mochitest
+            - artifact: target.reftest.tests.tar.gz
+              dest: aarch64/reftest
+            - artifact: target.talos.tests.tar.gz
+              dest: aarch64/talos
+            - artifact: target.raptor.tests.tar.gz
+              dest: aarch64/raptor
+            - artifact: target.condprof.tests.tar.gz
+              dest: aarch64/confprof
+            - artifact: target.awsy.tests.tar.gz
+              dest: aarch64/awsy
+            - artifact: target.xpcshell.tests.tar.gz
+              dest: aarch64/xpcshell
+            - artifact: target.web-platform.tests.tar.gz
+              dest: aarch64/web-platform
+            - artifact: target.updater-dep.tests.tar.gz
+              dest: aarch64/updater-dep
+            - artifact: target.crashreporter-symbols.zip
+              dest: aarch64/crashreporter-symbols
+            - artifact: target.jsshell.zip
+              dest: aarch64/jsshell
+        toolchain:
+            - linux64-cctools-port
+
+macosx64-noopt/debug:
+    description: "MacOS X x64 No-optimize Debug"
+    index:
+        job-name: macosx64-noopt-debug
+    treeherder:
+        platform: osx-cross-noopt/debug
+        symbol: B
+        tier: 2
+    worker:
+        max-run-time: 3600
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+        custom-build-variant-cfg: cross-noopt-debug
+        mozconfig-variant: cross-noopt-debug
+        keep-artifacts: false
+    run-on-projects: ['mozilla-central']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64-aarch64-noopt/debug:
+    description: "MacOS X aarch64 No-optimize Debug"
+    index:
+        job-name: macosx64-aarch64-noopt-debug
+    treeherder:
+        platform: osx-cross-noopt/debug
+        symbol: Baarch64
+        tier: 2
+    worker:
+        max-run-time: 3600
+        env:
+            PERFHERDER_EXTRA_OPTIONS: aarch64
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+        custom-build-variant-cfg: cross-noopt-debug
+        mozconfig-variant: cross-noopt-debug
+        keep-artifacts: false
+        extra-config:
+            mozconfig_platform: macosx64-aarch64
+    run-on-projects: ['mozilla-central']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64-x64-add-on-devel/opt:
+    description: "MacOS X x64 add-on-devel"
+    index:
+        job-name: macosx64-x64-add-on-devel
+    treeherder:
+        platform: osx-cross-add-on-devel/opt
+        symbol: Bx
+        tier: 2
+    worker:
+        max-run-time: 3600
+        env:
+            PERFHERDER_EXTRA_OPTIONS: x64
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+        custom-build-variant-cfg: add-on-devel
+        mozconfig-variant: add-on-devel
+    run-on-projects: ['mozilla-beta', 'mozilla-release']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64-aarch64-add-on-devel/opt:
+    description: "MacOS X Aarch64 add-on-devel"
+    index:
+        job-name: macosx64-aarch64-add-on-devel
+    treeherder:
+        platform: osx-cross-aarch64-add-on-devel/opt
+        symbol: B
+        tier: 2
+    worker:
+        max-run-time: 3600
+        env:
+            PERFHERDER_EXTRA_OPTIONS: aarch64
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+        custom-build-variant-cfg: add-on-devel
+        mozconfig-variant: add-on-devel
+        extra-config:
+            mozconfig_platform: macosx64-aarch64
+    run-on-projects: ['mozilla-beta', 'mozilla-release']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64-add-on-devel/opt:
+    description: "MacOS X add-on-devel"
+    index:
+        job-name: macosx64-add-on-devel
+    treeherder:
+        platform: osx-cross-add-on-devel/opt
+        symbol: B
+        tier: 2
+    worker:
+        max-run-time: 1800
+    run:
+        job-script: taskcluster/scripts/misc/unify.sh
+        config:
+            - builds/releng_base_firefox.py
+    run-on-projects: ['mozilla-beta', 'mozilla-release']
+    dependencies:
+        macosx64-x64-add-on-devel-opt: build-macosx64-x64-add-on-devel/opt
+        macosx64-aarch64-add-on-devel-opt: build-macosx64-aarch64-add-on-devel/opt
+    fetches:
+        macosx64-x64-add-on-devel-opt:
+            - artifact: target.dmg
+              extract: false
+              dest: x64
+            - artifact: buildhub.json
+              extract: false
+              dest: ../artifacts
+            - artifact: host/bin/mar
+              extract: false
+              dest: ../artifacts/host/bin
+            - artifact: host/bin/mbsdiff
+              extract: false
+              dest: ../artifacts/host/bin
+            - artifact: target.txt
+              extract: false
+              dest: ../artifacts
+            - artifact: target_info.txt
+              extract: false
+              dest: ../artifacts
+            - artifact: target.json
+              extract: false
+              dest: ../artifacts
+            - artifact: target.mozinfo.json
+              extract: false
+              dest: ../artifacts
+            - artifact: target.crashreporter-symbols.zip
+              dest: x64/crashreporter-symbols
+            - artifact: target.jsshell.zip
+              dest: x64/jsshell
+            - artifact: target.generated-files.tar.gz
+              extract: false
+              dest: ../artifacts
+            - artifact: target.langpack.xpi
+              extract: false
+              dest: ../artifacts
+            - artifact: mozharness.zip
+              extract: false
+              dest: ../artifacts
+        macosx64-aarch64-add-on-devel-opt:
+            - artifact: target.dmg
+              extract: false
+              dest: aarch64
+            - artifact: target.crashreporter-symbols.zip
+              dest: aarch64/crashreporter-symbols
+            - artifact: target.jsshell.zip
+              dest: aarch64/jsshell
+        toolchain:
+            - linux64-cctools-port
+
+macosx64-nightlyasrelease/opt:
+    description: "MacOS X Nightly-As-Release"
+    use-pgo: macosx64-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+        skip-verify-test-packaging: true
+        upload-generated-sources: true
+    index:
+        job-name: macosx64-nightlyasrelease-opt
+    treeherder:
+        platform: osx-nightlyasrelease/opt
+        symbol: Bpgo(Bnar)
+        tier: 1
+    run-on-projects: [trunk-only]
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: nightly-as-release
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+            - taskcluster_nightly.py
+        mozconfig-variant: nightly-as-release
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - linux64-clang
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64-x64-shippable/opt:
+    description: "MacOS X x64 Cross-compile"
+    use-pgo: macosx64-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+        skip-verify-test-packaging: true
+        upload-generated-sources: true
+    shipping-phase: build
+    shipping-product: firefox
+    index:
+        job-name: macosx64-x64-opt
+        type: shippable
+    treeherder:
+        platform: osx-shippable/opt
+        symbol: Bpgo(Bx)
+        tier: 1
+    run-on-projects: ['release']
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+            - taskcluster_nightly.py
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - linux64-clang
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64-aarch64-shippable/opt:
+    description: "MacOS X aarch64 Cross-compile"
+    use-pgo: macosx64-aarch64-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+        skip-verify-test-packaging: true
+        upload-generated-sources: true
+    shipping-phase: build
+    shipping-product: firefox
+    index:
+        job-name: macosx64-aarch64-opt
+        type: shippable
+    treeherder:
+        platform: osx-aarch64-shippable/opt
+        symbol: Bpgo(B)
+        tier: 1
+    run-on-projects: ['release']
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+            PERFHERDER_EXTRA_OPTIONS: aarch64
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            mozconfig_platform: macosx64-aarch64
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - linux64-clang
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
+
+macosx64-shippable/opt:
+    description: "MacOS X Universal"
+    attributes:
+        shippable: true
+        enable-build-signing: true
+        skip-upload-crashsymbols: true
+        skip-verify-test-packaging: true
+    shipping-phase: build
+    shipping-product: firefox
+    index:
+        job-name: macosx64-opt
+        type: shippable
+    treeherder:
+        platform: osx-shippable/opt
+        symbol: Bpgo(B)
+        tier: 1
+    run-on-projects: ['release']
+    worker:
+        max-run-time: 1800
+    run:
+        job-script: taskcluster/scripts/misc/unify.sh
+        config:
+            - builds/releng_base_firefox.py
+    dependencies:
+        macosx64-x64-shippable-opt: build-macosx64-x64-shippable/opt
+        macosx64-aarch64-shippable-opt: build-macosx64-aarch64-shippable/opt
+    fetches:
+        macosx64-x64-shippable-opt:
+            - artifact: target.dmg
+              extract: false
+              dest: x64
+            - artifact: buildhub.json
+              extract: false
+              dest: ../artifacts
+            - artifact: host/bin/mar
+              extract: false
+              dest: ../artifacts/host/bin
+            - artifact: host/bin/mbsdiff
+              extract: false
+              dest: ../artifacts/host/bin
+            - artifact: target.txt
+              extract: false
+              dest: ../artifacts
+            - artifact: target_info.txt
+              extract: false
+              dest: ../artifacts
+            - artifact: target.json
+              extract: false
+              dest: ../artifacts
+            - artifact: target.mozinfo.json
+              extract: false
+              dest: ../artifacts
+            - artifact: target.test_packages.json
+              extract: false
+              dest: ../artifacts
+            - artifact: target.perftests.tests.tar.gz
+              extract: false
+              dest: ../artifacts
+            - artifact: target.xpt_artifacts.zip
+              extract: false
+              dest: ../artifacts
+            - artifact: target.common.tests.tar.gz
+              dest: x64/common
+            - artifact: target.cppunittest.tests.tar.gz
+              dest: x64/cppunittest
+            - artifact: target.gtest.tests.tar.gz
+              dest: x64/gtest
+            - artifact: target.jittest.tests.tar.gz
+              dest: x64/jittest
+            - artifact: target.jsreftest.tests.tar.gz
+              dest: x64/jsreftest
+            - artifact: target.mochitest.tests.tar.gz
+              dest: x64/mochitest
+            - artifact: target.reftest.tests.tar.gz
+              dest: x64/reftest
+            - artifact: target.talos.tests.tar.gz
+              dest: x64/talos
+            - artifact: target.raptor.tests.tar.gz
+              dest: x64/raptor
+            - artifact: target.condprof.tests.tar.gz
+              dest: x64/confprof
+            - artifact: target.awsy.tests.tar.gz
+              dest: x64/awsy
+            - artifact: target.xpcshell.tests.tar.gz
+              dest: x64/xpcshell
+            - artifact: target.web-platform.tests.tar.gz
+              dest: x64/web-platform
+            - artifact: target.updater-dep.tests.tar.gz
+              dest: x64/updater-dep
+            - artifact: target.crashreporter-symbols.zip
+              dest: x64/crashreporter-symbols
+            - artifact: target.jsshell.zip
+              dest: x64/jsshell
+            - artifact: target.generated-files.tar.gz
+              extract: false
+              dest: ../artifacts
+            - artifact: target.langpack.xpi
+              extract: false
+              dest: ../artifacts
+            - artifact: mozharness.zip
+              extract: false
+              dest: ../artifacts
+        macosx64-aarch64-shippable-opt:
+            - artifact: target.dmg
+              extract: false
+              dest: aarch64
+            - artifact: target.common.tests.tar.gz
+              dest: aarch64/common
+            - artifact: target.cppunittest.tests.tar.gz
+              dest: aarch64/cppunittest
+            - artifact: target.gtest.tests.tar.gz
+              dest: aarch64/gtest
+            - artifact: target.jittest.tests.tar.gz
+              dest: aarch64/jittest
+            - artifact: target.jsreftest.tests.tar.gz
+              dest: aarch64/jsreftest
+            - artifact: target.mochitest.tests.tar.gz
+              dest: aarch64/mochitest
+            - artifact: target.reftest.tests.tar.gz
+              dest: aarch64/reftest
+            - artifact: target.talos.tests.tar.gz
+              dest: aarch64/talos
+            - artifact: target.raptor.tests.tar.gz
+              dest: aarch64/raptor
+            - artifact: target.condprof.tests.tar.gz
+              dest: aarch64/confprof
+            - artifact: target.awsy.tests.tar.gz
+              dest: aarch64/awsy
+            - artifact: target.xpcshell.tests.tar.gz
+              dest: aarch64/xpcshell
+            - artifact: target.web-platform.tests.tar.gz
+              dest: aarch64/web-platform
+            - artifact: target.updater-dep.tests.tar.gz
+              dest: aarch64/updater-dep
+            - artifact: target.crashreporter-symbols.zip
+              dest: aarch64/crashreporter-symbols
+            - artifact: target.jsshell.zip
+              dest: aarch64/jsshell
+        toolchain:
+            - linux64-cctools-port
+
+macosx64-ccov/opt:
+    description: "MacOS X x64 Cross-compile Code Coverage"
+    index:
+        job-name: macosx64-ccov-opt
+    treeherder:
+        platform: osx-cross-ccov/opt
+        symbol: B
+        tier: 1
+    worker:
+        max-run-time: 7200
+        env:
+            RUSTC_BOOTSTRAP: '1'
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_mac_64_cross_builds.py
+        custom-build-variant-cfg: code-coverage-opt
+        mozconfig-variant: code-coverage
+    run-on-projects: ['mozilla-central']
+    use-sccache: false
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+            - macosx64-sdk
+            - sysroot-wasm32-wasi
diff --git a/taskcluster/ci/build/windows-mingw.yml b/taskcluster/ci/build/windows-mingw.yml
new file mode 100644
index 0000000000..09c3ee0022
--- /dev/null
+++ b/taskcluster/ci/build/windows-mingw.yml
@@ -0,0 +1,173 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+    run:
+        using: mozharness
+        actions: [build]
+        script: mozharness/scripts/fx_desktop_build.py
+    optimization:
+        skip-unless-expanded: null
+    fetches:
+        toolchain:
+            - windows-rs
+
+win32-mingwclang/opt:
+    description: "Win32 MinGW-Clang Opt"
+    index:
+        product: firefox
+        job-name: win32-mingwclang-opt
+    treeherder:
+        platform: windows-mingw32/all
+        symbol: WMC32(Bo)
+        tier: 2
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: "opt 32 clang"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_windows_32_mingw_builds.py
+            - builds/releng_sub_windows_configs/32_mingwclang.py
+        mozconfig-variant: mingwclang
+    run-on-projects:
+        - 'mozilla-central'
+        - 'mozilla-esr115'
+    use-sccache: true
+    fetches:
+        toolchain:
+            - mingw32-rust
+            - linux64-upx
+            - linux64-wine
+            - linux64-sccache
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+            - linux64-clang-mingw-x86
+            - linux64-mingw32-nsis
+            - linux64-mingw-fxc2-x86
+            - linux64-dump_syms
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+win32-mingwclang/debug:
+    description: "Win32 MinGW-Clang Debug"
+    index:
+        product: firefox
+        job-name: win32-mingwclang-debug
+    treeherder:
+        platform: windows-mingw32/all
+        symbol: WMC32(Bd)
+        tier: 2
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: "debug 32 clang"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_windows_32_mingw_builds.py
+            - builds/releng_sub_windows_configs/32_mingwclang.py
+        mozconfig-variant: mingwclang-debug
+    run-on-projects:
+        - 'mozilla-central'
+        - 'mozilla-esr115'
+    use-sccache: true
+    fetches:
+        toolchain:
+            - mingw32-rust
+            - linux64-upx
+            - linux64-wine
+            - linux64-sccache
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+            - linux64-clang-mingw-x86
+            - linux64-mingw32-nsis
+            - linux64-mingw-fxc2-x86
+            - linux64-dump_syms
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+win64-mingwclang/opt:
+    description: "Win64 MinGW-Clang Opt"
+    index:
+        product: firefox
+        job-name: win64-mingwclang-opt
+    treeherder:
+        platform: windows-mingw32/all
+        symbol: WMC64(Bo)
+        tier: 2
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: "opt 64 clang"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_windows_64_mingw_builds.py
+            - builds/releng_sub_windows_configs/64_mingwclang.py
+        mozconfig-variant: mingwclang
+    run-on-projects:
+        - 'mozilla-central'
+        - 'mozilla-esr115'
+    use-sccache: true
+    fetches:
+        toolchain:
+            - mingw32-rust
+            - linux64-upx
+            - linux64-wine
+            - linux64-sccache
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+            - linux64-clang-mingw-x64
+            - linux64-mingw32-nsis
+            - linux64-mingw-fxc2-x86
+            - linux64-dump_syms
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+win64-mingwclang/debug:
+    description: "Win64 MinGW-Clang Debug"
+    index:
+        product: firefox
+        job-name: win64-mingwclang-debug
+    treeherder:
+        platform: windows-mingw32/all
+        symbol: WMC64(Bd)
+        tier: 2
+    worker:
+        env:
+            PERFHERDER_EXTRA_OPTIONS: "debug 64 clang"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_windows_64_mingw_builds.py
+            - builds/releng_sub_windows_configs/64_mingwclang.py
+        mozconfig-variant: mingwclang-debug
+    run-on-projects:
+        - 'mozilla-central'
+        - 'mozilla-esr115'
+    use-sccache: true
+    fetches:
+        toolchain:
+            - mingw32-rust
+            - linux64-upx
+            - linux64-wine
+            - linux64-sccache
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+            - linux64-clang-mingw-x64
+            - linux64-mingw32-nsis
+            - linux64-mingw-fxc2-x86
+            - linux64-dump_syms
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
diff --git a/taskcluster/ci/build/windows.yml b/taskcluster/ci/build/windows.yml
new file mode 100644
index 0000000000..cde5e216da
--- /dev/null
+++ b/taskcluster/ci/build/windows.yml
@@ -0,0 +1,1583 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    run:
+        using: mozharness
+    fetches:
+        toolchain:
+            - windows-rs
+
+win32/debug:
+    description: "Win32 Debug"
+    index:
+        product: firefox
+        job-name: win32-debug
+    attributes:
+        enable-build-signing: true
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: windows2012-32/debug
+        symbol: B
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        options: [append-env-variables-from-configs]
+        actions: [get-secrets, build]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - builds/taskcluster_sub_win32/debug.py
+        mozconfig-variant: debug
+        extra-config:
+            mozconfig_platform: win32
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win32/opt:
+    description: "Win32 Opt"
+    index:
+        product: firefox
+        job-name: win32-opt
+    attributes:
+        enable-build-signing: true
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: windows2012-32/opt
+        symbol: B
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        options: [append-env-variables-from-configs]
+        actions: [get-secrets, build]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        extra-config:
+            stage_platform: win32
+            mozconfig_platform: win32
+    run-on-projects: ['integration']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win32-fuzzing/debug:
+    description: "Win32 Fuzzing Debug"
+    index:
+        product: firefox
+        job-name: win32-fuzzing-debug
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: windows2012-32/debug
+        symbol: Bf
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: fuzzing
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - builds/taskcluster_sub_win32/debug.py
+        extra-config:
+            stage_platform: win32
+            mozconfig_platform: win32
+        mozconfig-variant: debug-fuzzing
+    run-on-projects: ['trunk']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+    optimization:
+        skip-unless-expanded: null
+
+win64/debug:
+    description: "Win64 Debug"
+    index:
+        product: firefox
+        job-name: win64-debug
+    attributes:
+        enable-build-signing: true
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: windows2012-64/debug
+        symbol: B
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        options: [append-env-variables-from-configs]
+        actions: [get-secrets, build]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - builds/taskcluster_sub_win64/debug.py
+        mozconfig-variant: debug
+        extra-config:
+            mozconfig_platform: win64
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win64-non-unified/plain:
+    description: "Win64 Hybrid Plain"
+    index:
+        product: firefox
+        job-name: win64-non-unified-plain
+    treeherder:
+        platform: windows2012-64/debug
+        symbol: Bp-nu
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: non-unified
+    run:
+        options: [append-env-variables-from-configs]
+        actions: [get-secrets, build]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        mozconfig-variant: non-unified
+        extra-config:
+            mozconfig_platform: win64
+    use-sccache: true
+    run-on-projects: ['integration']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win64-fuzzing/debug:
+    description: "Win64 Fuzzing Debug"
+    index:
+        product: firefox
+        job-name: win64-fuzzing-debug
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: windows2012-64/debug
+        symbol: Bf
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: fuzzing
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - builds/taskcluster_sub_win64/debug.py
+        extra-config:
+            mozconfig_platform: win64
+        mozconfig-variant: debug-fuzzing
+    run-on-projects: ['trunk']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+    optimization:
+        skip-unless-expanded: null
+
+win64-plain/debug:
+    description: "Win64 Debug Plain"
+    index:
+        product: firefox
+        job-name: win64-plain-debug
+    treeherder:
+        platform: windows2012-64/debug
+        symbol: Bp
+        tier: 1
+    worker-type: b-win2022
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: plain
+    run:
+        actions: [build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        config:
+            - builds/releng_base_firefox.py
+            - builds/taskcluster_base_windows.py
+            - builds/taskcluster_base_win64.py
+        extra-config:
+            disable_package_metrics: true
+            stage_platform: win64
+        mozconfig-variant: plain-debug
+    run-on-projects: ['trunk']
+    fetches:
+        toolchain:
+            - win64-clang
+            - win64-rust
+            - win64-node
+            - win64-nasm
+            - win64-cbindgen
+            - win64-winchecksec
+            - win64-mozmake
+            - win64-dump_syms
+            - vs
+            - nsis
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+win64/opt:
+    description: "Win64 Opt"
+    index:
+        product: firefox
+        job-name: win64-opt
+    attributes:
+        enable-build-signing: true
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: windows2012-64/opt
+        symbol: B
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        options: [append-env-variables-from-configs]
+        actions: [get-secrets, build]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        extra-config:
+            stage_platform: win64
+            mozconfig_platform: win64
+    run-on-projects: ['integration']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win64-plain/opt:
+    description: "Win64 Opt Plain"
+    index:
+        product: firefox
+        job-name: win64-plain-opt
+    treeherder:
+        platform: windows2012-64/opt
+        symbol: Bp
+        tier: 1
+    worker-type: b-win2022
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: plain
+    run:
+        actions: [build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        config:
+            - builds/releng_base_firefox.py
+            - builds/taskcluster_base_windows.py
+            - builds/taskcluster_base_win64.py
+        extra-config:
+            disable_package_metrics: true
+            stage_platform: win64
+        mozconfig-variant: plain-opt
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - win64-clang
+            - win64-rust
+            - win64-nasm
+            - win64-node
+            - win64-cbindgen
+            - win64-winchecksec
+            - win64-mozmake
+            - win64-dump_syms
+            - vs
+            - nsis
+            - sysroot-wasm32-wasi
+    optimization:
+        skip-unless-expanded: null
+
+win32-shippable/opt:
+    description: "Win32 Opt Shippable"
+    use-pgo: true
+    index:
+        product: firefox
+        job-name: win32-opt
+        type: shippable
+    attributes:
+        shippable: true
+        enable-full-crashsymbols: true
+    stub-installer:
+        by-release-type:
+            nightly: true
+            beta: true
+            release.*: true
+            esr.*: false
+            default:
+                by-project:
+                    # browser/confvars.sh looks for nightly-try
+                    try: true
+                    default: false
+    shipping-phase: build
+    shipping-product: firefox
+    treeherder:
+        platform: windows2012-32-shippable/opt
+        symbol: Bpgo(B)
+        tier: 1
+    run-on-projects: ['release']
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 10800
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+              builds/releng_base_linux_64_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            stage_platform: win32
+            mozconfig_platform: win32
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win64-shippable/opt:
+    description: "Win64 Shippable"
+    use-pgo: true
+    index:
+        product: firefox
+        job-name: win64-opt
+        type: shippable
+    attributes:
+        shippable: true
+        enable-full-crashsymbols: true
+    shipping-phase: build
+    shipping-product: firefox
+    treeherder:
+        platform: windows2012-64-shippable/opt
+        symbol: Bpgo(B)
+        tier: 1
+    run-on-projects: ['release']
+    worker-type: b-linux-xlarge-gcp
+    worker:
+        max-run-time: 10800
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            stage_platform: win64
+            mozconfig_platform: win64
+            max_build_output_timeout: 3600
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win64-nightlyasrelease/opt:
+    description: "Win64 Opt Nightly-As-Release"
+    use-pgo: win64-shippable/opt
+    attributes:
+        enable-full-crashsymbols: true
+    index:
+        product: firefox
+        job-name: win64-nightlyasrelease-opt
+    treeherder:
+        platform: win64-nightlyasrelease/opt
+        symbol: Bpgo(Bnar)
+    worker-type: b-linux-xlarge-gcp
+    worker:
+        max-run-time: 10800
+        env:
+            PERFHERDER_EXTRA_OPTIONS: "nightly-as-release"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            stage_platform: win64
+            mozconfig_platform: win64
+            max_build_output_timeout: 3600
+        mozconfig-variant: nightly-as-release
+    run-on-projects: [trunk-only]
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win32-add-on-devel/opt:
+    description: "Windows32 add-on-devel"
+    index:
+        product: firefox
+        job-name: win32-add-on-devel
+    treeherder:
+        platform: windows2012-32-add-on-devel/opt
+        symbol: B
+        tier: 2
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 10800
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        extra-config:
+            stage_platform: win32-add-on-devel
+            mozconfig_platform: win32
+        mozconfig-variant: add-on-devel
+    run-on-projects: ['mozilla-beta', 'mozilla-release']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win64-add-on-devel/opt:
+    description: "Windows64 add-on-devel"
+    index:
+        product: firefox
+        job-name: win64-add-on-devel
+    treeherder:
+        platform: windows2012-64-add-on-devel/opt
+        symbol: B
+        tier: 2
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 10800
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: "mozharness/scripts/fx_desktop_build.py"
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        extra-config:
+            stage_platform: win64-on-devel
+            mozconfig_platform: win64
+        mozconfig-variant: add-on-devel
+    run-on-projects: ['mozilla-beta', 'mozilla-release']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win64-noopt/debug:
+    description: "Win64 No-optimize Debug"
+    index:
+        product: firefox
+        job-name: win64-noopt-debug
+    treeherder:
+        platform: windows2012-64-noopt/debug
+        symbol: B
+        tier: 2
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - builds/taskcluster_sub_win64/noopt_debug.py
+        mozconfig-variant: noopt-debug
+        extra-config:
+            mozconfig_platform: win64
+    run-on-projects: ['mozilla-central']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win32-noopt/debug:
+    description: "Win32 No-optimize Debug"
+    index:
+        product: firefox
+        job-name: win32-noopt-debug
+    treeherder:
+        platform: windows2012-32-noopt/debug
+        symbol: B
+        tier: 2
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - builds/taskcluster_sub_win32/noopt_debug.py
+        mozconfig-variant: noopt-debug
+        extra-config:
+            mozconfig_platform: win32
+    run-on-projects: ['mozilla-central']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win32-rusttests/opt:
+    description: "Win32 Rust Tests Opt"
+    index:
+        product: firefox
+        job-name: win32-rusttests-opt
+    treeherder:
+        platform: windows2012-32/opt
+        symbol: BR
+        tier: 1
+    worker-type: b-win2022
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: rusttests
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/taskcluster_base_windows.py
+            - builds/taskcluster_base_win32.py
+        extra-config:
+            stage_platform: win32-rusttests
+            app_name: tools/rusttests
+            disable_package_metrics: true
+        mozconfig-variant: rusttests
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - win64-clang
+            - win64-rust
+            - win64-cbindgen
+            - win64-nasm
+            - win64-node
+            - win64-winchecksec
+            - win64-mozmake
+            - win64-dump_syms
+            - vs
+    optimization:
+        test-inclusive: [rusttests]
+
+win32-rusttests/debug:
+    description: "Win32 Rust Tests Debug"
+    index:
+        product: firefox
+        job-name: win32-rusttests-debug
+    treeherder:
+        platform: windows2012-32/debug
+        symbol: BR
+        tier: 1
+    worker-type: b-win2022
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: rusttests
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/taskcluster_base_windows.py
+            - builds/taskcluster_base_win32.py
+        extra-config:
+            stage_platform: win32-rusttests
+            app_name: tools/rusttests
+            disable_package_metrics: true
+        mozconfig-variant: rusttests-debug
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - win64-clang
+            - win64-rust
+            - win64-cbindgen
+            - win64-nasm
+            - win64-node
+            - win64-winchecksec
+            - win64-mozmake
+            - win64-dump_syms
+            - vs
+    optimization:
+        test-inclusive: [rusttests]
+
+win64-rusttests/opt:
+    description: "Win64 Rust Tests Opt"
+    index:
+        product: firefox
+        job-name: win64-rusttests-opt
+    treeherder:
+        platform: windows2012-64/opt
+        symbol: BR
+        tier: 1
+    worker-type: b-win2022
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: rusttests
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/taskcluster_base_windows.py
+            - builds/taskcluster_base_win64.py
+            - builds/taskcluster_sub_win64/rusttests_opt.py
+        mozconfig-variant: rusttests
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - win64-clang
+            - win64-rust
+            - win64-cbindgen
+            - win64-nasm
+            - win64-node
+            - win64-winchecksec
+            - win64-mozmake
+            - win64-dump_syms
+            - vs
+    optimization:
+        test-inclusive: [rusttests]
+
+win64-rusttests/debug:
+    description: "Win64 Rust Tests Debug"
+    index:
+        product: firefox
+        job-name: win64-rusttests-debug
+    treeherder:
+        platform: windows2012-64/debug
+        symbol: BR
+        tier: 1
+    worker-type: b-win2022
+    worker:
+        max-run-time: 5400
+        env:
+            PERFHERDER_EXTRA_OPTIONS: rusttests
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/taskcluster_base_windows.py
+            - builds/taskcluster_base_win64.py
+            - builds/taskcluster_sub_win64/rusttests_opt.py
+        mozconfig-variant: rusttests-debug
+    run-on-projects: ['trunk']
+    fetches:
+        toolchain:
+            - win64-clang
+            - win64-rust
+            - win64-cbindgen
+            - win64-nasm
+            - win64-node
+            - win64-winchecksec
+            - win64-mozmake
+            - win64-dump_syms
+            - vs
+    optimization:
+        test-inclusive: [rusttests]
+
+win64-ccov/opt:
+    description: "Win64 Opt Code Coverage"
+    index:
+        product: firefox
+        job-name: win64-ccov-opt
+    attributes:
+        enable-build-signing: true
+    treeherder:
+        platform: windows2012-64/ccov
+        symbol: B
+        tier: 2
+    worker-type: b-win2022
+    worker:
+        artifacts:
+            - name: public/code-coverage-grcov.zip
+              path: workspace\obj-build\code-coverage-grcov.zip
+              type: file
+        max-run-time: 9000
+        env:
+            RUSTC_BOOTSTRAP: '1'
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/taskcluster_base_windows.py
+            - builds/taskcluster_base_win64.py
+            - builds/taskcluster_sub_win64/ccov_opt.py
+        mozconfig-variant: code-coverage
+    run-on-projects: ['mozilla-central']
+    use-sccache: false
+    fetches:
+        toolchain:
+            - win64-clang
+            - win64-rust
+            - win64-rust-size
+            - win64-cbindgen
+            - win64-grcov
+            - win64-sccache
+            - win64-nasm
+            - win64-node
+            - win64-winchecksec
+            - win64-mozmake
+            - win64-dump_syms
+            - vs
+            - nsis
+            - sysroot-wasm32-wasi
+
+win64-fuzzing-ccov/opt:
+    description: "Win64 Fuzzing Opt w/ Coverage"
+    index:
+        product: firefox
+        job-name: win64-ccov-fuzzing-opt
+    treeherder:
+        platform: windows2012-64/ccov
+        symbol: Bocf
+    worker-type: b-win2022
+    worker:
+        artifacts:
+            - name: public/code-coverage-grcov.zip
+              path: workspace\obj-build\code-coverage-grcov.zip
+              type: file
+        max-run-time: 9000
+        env:
+            RUSTC_BOOTSTRAP: '1'
+            PERFHERDER_EXTRA_OPTIONS: "fuzzing-ccov"
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/taskcluster_base_windows.py
+            - builds/taskcluster_base_win64.py
+            - builds/taskcluster_sub_win64/ccov_opt.py
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        mozconfig-variant: fuzzing-ccov
+        tooltool-downloads: public
+    run-on-projects: ['mozilla-central']
+    use-sccache: false
+    fetches:
+        toolchain:
+            - win64-clang
+            - win64-rust
+            - win64-rust-size
+            - win64-cbindgen
+            - win64-grcov
+            - win64-sccache
+            - win64-nasm
+            - win64-node
+            - win64-winchecksec
+            - win64-mozmake
+            - win64-dump_syms
+            - vs
+            - nsis
+            - sysroot-wasm32-wasi
+
+win64-asan/debug:
+    description: "Win64 Debug ASAN"
+    index:
+        product: firefox
+        job-name: win64-asan-debug
+    treeherder:
+        platform: windows2012-64/asan
+        symbol: Bd
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: "debug asan"
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - builds/taskcluster_sub_win64/asan_debug.py
+        extra-config:
+            mozconfig_platform: win64
+        mozconfig-variant: debug-asan
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - win64-llvm-symbolizer
+            - vs
+        fetch:
+            - upx-3.95-win
+    optimization:
+        skip-unless-expanded: null
+
+win64-asan/opt:
+    description: "Win64 Opt ASAN"
+    index:
+        product: firefox
+        job-name: win64-asan-opt
+    treeherder:
+        platform: windows2012-64/asan
+        symbol: Bo
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: "opt asan"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        extra-config:
+            stage_platform: win64-asan
+            mozconfig_platform: win64
+        mozconfig-variant: nightly-asan
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - win64-llvm-symbolizer
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win64-asan-reporter-shippable/opt:
+    description: "Win64 Opt ASAN Reporter (Shippable)"
+    attributes:
+        shippable: true
+    shipping-product:
+        by-release-type:
+            nightly: firefox
+            default: null
+    index:
+        product: firefox
+        job-name: win64-asan-reporter-opt
+        type: shippable
+    treeherder:
+        platform: win64-asan-reporter/opt
+        symbol: BoR
+    worker-type: b-linux-xlarge-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: "asan-reporter"
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - builds/taskcluster_sub_win64/asan_reporter_opt.py
+            - taskcluster_nightly.py
+        extra-config:
+            stage_platform: win64-asan-reporter
+            mozconfig_platform: win64
+            max_build_output_timeout: 3600
+        mozconfig-variant: nightly-asan-reporter
+        mar-channel-id:
+            firefox-mozilla-central-asan
+        accepted-mar-channel-ids:
+            firefox-mozilla-central-asan
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - win64-llvm-symbolizer
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win64-asan-fuzzing/opt:
+    description: "Win64 Fuzzing Opt ASAN"
+    index:
+        product: firefox
+        job-name: win64-fuzzing-asan-opt
+    treeherder:
+        platform: windows2012-64/asan
+        symbol: Bof
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: fuzzing-asan
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        extra-config:
+            stage_platform: win64-fuzzing-asan
+            mozconfig_platform: win64
+        mozconfig-variant: nightly-fuzzing-asan
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - win64-llvm-symbolizer
+            - vs
+        fetch:
+            - upx-3.95-win
+    optimization:
+        skip-unless-expanded: null
+
+win32-devedition/opt:
+    description: "Win32 Dev Edition (shippable)"
+    use-pgo: win32-shippable/opt
+    index:
+        product: devedition
+        job-name: win32-opt
+        type: shippable
+    attributes:
+        shippable: true
+        enable-full-crashsymbols: true
+    stub-installer:
+        by-release-type:
+            nightly: true
+            beta: true
+            release.*: true
+            default:
+                by-project:
+                    # browser/confvars.sh looks for nightly-try
+                    try: true
+                    default: false
+    shipping-phase: build
+    shipping-product: devedition
+    treeherder:
+        platform: windows2012-32-devedition/opt
+        symbol: B
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 10800
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        options: [append-env-variables-from-configs]
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            stage_platform: win32-devedition
+            mozconfig_platform: win32
+        mozconfig-variant: devedition
+    run-on-projects: ['mozilla-beta']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win64-devedition/opt:
+    description: "Win64 Dev Edition (shippable)"
+    use-pgo: win64-shippable/opt
+    index:
+        product: devedition
+        job-name: win64-opt
+        type: shippable
+    attributes:
+        shippable: true
+        enable-full-crashsymbols: true
+    shipping-phase: build
+    shipping-product: devedition
+    treeherder:
+        platform: windows2012-64-devedition/opt
+        symbol: B
+        tier: 1
+    worker-type: b-linux-xlarge-gcp
+    worker:
+        max-run-time: 10800
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            stage_platform: win64-devedition
+            mozconfig_platform: win64
+            max_build_output_timeout: 3600
+        mozconfig-variant: devedition
+    run-on-projects: ['mozilla-beta']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win64-aarch64/debug:
+    description: "AArch64 Win64 Debug"
+    index:
+        product: firefox
+        job-name: win64-aarch64-debug
+    attributes:
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: windows2012-aarch64/debug
+        symbol: B
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: aarch64
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - builds/taskcluster_sub_win64/debug.py
+        extra-config:
+            mozconfig_platform: win64-aarch64
+        mozconfig-variant: debug
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+    optimization:
+        skip-unless-expanded: null
+
+win64-aarch64/opt:
+    description: "AArch64 Win64 Opt"
+    index:
+        product: firefox
+        job-name: win64-aarch64-opt
+    attributes:
+        enable-build-signing: true
+        enable-full-crashsymbols: true
+    treeherder:
+        platform: windows2012-aarch64/opt
+        symbol: B
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: aarch64
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+        extra-config:
+            stage_platform: win64-aarch64
+            mozconfig_platform: win64-aarch64
+    run-on-projects: ['integration']
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-sccache
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+    optimization:
+        skip-unless-expanded: null
+
+win64-aarch64-shippable/opt:
+    description: "AArch64 Win64 Shippable"
+    use-pgo: win64-shippable/opt
+    index:
+        product: firefox
+        job-name: win64-aarch64-opt
+        type: shippable
+    attributes:
+        shippable: true
+        enable-full-crashsymbols: true
+    shipping-phase: build
+    shipping-product: firefox
+    treeherder:
+        platform: windows2012-aarch64-shippable/opt
+        symbol: Bpgo(B)
+        tier: 1
+    run-on-projects: ['release']
+    worker-type: b-linux-xlarge-gcp
+    worker:
+        max-run-time: 10800
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            stage_platform: win64-aarch64
+            mozconfig_platform: win64-aarch64
+            max_build_output_timeout: 3600
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
+
+win64-aarch64-devedition/opt:
+    description: "AArch64 Win64 Dev Edition (shippable)"
+    use-pgo: win64-shippable/opt
+    index:
+        product: devedition
+        job-name: win64-aarch64-opt
+        type: shippable
+    attributes:
+        shippable: true
+        enable-full-crashsymbols: true
+    shipping-phase: build
+    shipping-product: devedition
+    treeherder:
+        platform: windows2012-aarch64-devedition/opt
+        symbol: Bpgo(B)
+        tier: 1
+    worker-type: b-linux-xlarge-gcp
+    worker:
+        max-run-time: 10800
+        env:
+            MOZ_AUTOMATION_PACKAGE_TESTS: "1"
+    run:
+        actions: [get-secrets, build]
+        options: [append-env-variables-from-configs]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+        config:
+            - builds/releng_base_firefox.py
+            - builds/releng_base_linux_64_builds.py
+            - taskcluster_nightly.py
+        extra-config:
+            stage_platform: win64-aarch64
+            mozconfig_platform: win64-aarch64
+            max_build_output_timeout: 3600
+        mozconfig-variant: devedition
+    run-on-projects: ['mozilla-beta']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust-cross
+            - linux64-rust-size
+            - linux64-nasm
+            - linux64-node
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-wine
+            - linux64-winchecksec
+            - nsis
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+            - vs
+        fetch:
+            - upx-3.95-win
diff --git a/taskcluster/ci/code-review/kind.yml b/taskcluster/ci/code-review/kind.yml
new file mode 100644
index 0000000000..b57af6acaf
--- /dev/null
+++ b/taskcluster/ci/code-review/kind.yml
@@ -0,0 +1,45 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.code_review:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - source-test
+    - toolchain
+
+job-defaults:
+    use-system-python: false
+
+jobs:
+    issues:
+        label: code-review-issues
+        description: List all issues found in static analysis and linting tasks
+        worker-type: b-linux-gcp
+
+        # Only run by using the code-review target_tasks_method
+        run-on-projects: []
+
+        # This option permits to run the task
+        # regardless of the soft-dependencies tasks exit status
+        # as we are interested in the task failures
+        requires: all-resolved
+
+        # Publish on pulse
+        routes:
+            - project.relman.codereview.v1.try_ending
+
+        # Dummy execution for now, we only need the pulse message
+        worker:
+            docker-image:
+                in-tree: debian12-base
+            max-run-time: 600
+        run:
+            using: run-task
+            checkout: false
+            command: /bin/true
diff --git a/taskcluster/ci/condprof/kind.yml b/taskcluster/ci/condprof/kind.yml
new file mode 100644
index 0000000000..75afd4a3e2
--- /dev/null
+++ b/taskcluster/ci/condprof/kind.yml
@@ -0,0 +1,136 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - build
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.condprof:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    treeherder:
+        kind: other
+        tier: 2
+    scenarios:
+        - settled
+    run:
+        using: run-task
+        cwd: fetches/condprofile
+        checkout: false
+        tooltool-downloads: public
+    scopes:
+        - secrets:get:project/releng/gecko/build/level-{level}/conditioned-profiles
+    worker:
+        taskcluster-proxy: true
+        max-run-time: 10800
+    use-system-python: false
+jobs:
+    windows2012-64-firefox:
+        worker-type: b-win2022
+        description: Creates or updates conditioned profiles on Win64
+        run-on-projects: ['mozilla-central']
+        treeherder:
+            symbol: condprof(firefox)
+            platform: windows2012-64/opt
+        index:
+            product: firefox
+            job-name: condprof-win64
+        dependencies:
+            build: build-win64-shippable/opt
+        scenarios:
+            - settled
+            - full
+        fetches:
+            build:
+                - artifact: target.condprof.tests.tar.gz
+                - artifact: target.zip
+            toolchain:
+                - win64-geckodriver
+        run:
+            command: >-
+                python3.exe condprof/main.py
+                ${EXTRA_ARGS}
+                --geckodriver ${MOZ_FETCHES_DIR}/geckodriver.exe
+                --firefox ${MOZ_FETCHES_DIR}/firefox/firefox.exe
+                --scenario ${SCENARIO}
+                ../../archive
+        worker:
+            artifacts:
+                - name: public/condprof
+                  path: archive
+                  type: directory
+    linux64-firefox:
+        worker-type: b-linux-gcp
+        description: Creates or updates conditioned profiles on Linux
+        run-on-projects: ['mozilla-central']
+        treeherder:
+            symbol: condprof(firefox)
+            platform: linux64/opt
+        index:
+            product: firefox
+            job-name: condprof-linux64
+        dependencies:
+            build: build-linux64-shippable/opt
+        scenarios:
+            - settled
+            - full
+        fetches:
+            build:
+                - artifact: target.condprof.tests.tar.gz
+                - artifact: target.tar.bz2
+            toolchain:
+                - linux64-geckodriver
+        run:
+            command: >-
+                python3 -m venv . &&
+                bin/python3 condprof/main.py
+                ${EXTRA_ARGS}
+                --geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+                --firefox ${MOZ_FETCHES_DIR}/firefox/firefox-bin
+                --scenario ${SCENARIO}
+                ../../archive
+        worker:
+            docker-image: {in-tree: condprof}
+            artifacts:
+                - name: public/condprof
+                  path: /builds/worker/archive
+                  type: directory
+    macosx64-firefox:
+        worker-type: t-osx-1015-r8
+        description: Creates or updates conditioned profiles on macOS
+        run-on-projects: ['mozilla-central']
+        treeherder:
+            symbol: condprof(firefox)
+            platform: macosx1015-64-qr/opt
+        index:
+            product: firefox
+            job-name: condprof-macosx64
+        dependencies:
+            build: build-macosx64-shippable/opt
+        fetches:
+            build:
+                - artifact: target.condprof.tests.tar.gz
+                - artifact: target.dmg
+                  extract: false
+            toolchain:
+                - macosx64-geckodriver
+        run:
+            command: >-
+                python3 -m venv . &&
+                bin/python3 condprof/main.py
+                ${EXTRA_ARGS}
+                --geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+                --firefox ${MOZ_FETCHES_DIR}/target.dmg
+                --scenario ${SCENARIO}
+                ../../archive
+        worker:
+            artifacts:
+                - name: public/condprof
+                  path: archive
+                  type: directory
diff --git a/taskcluster/ci/config.yml b/taskcluster/ci/config.yml
new file mode 100644
index 0000000000..73496c538b
--- /dev/null
+++ b/taskcluster/ci/config.yml
@@ -0,0 +1,879 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+trust-domain: gecko
+project-repo-param-prefix: ''
+product-dir: 'browser'
+treeherder:
+    group-names:
+        'cram': 'Cram tests'
+        'js-bench-sm': 'JavaScript shell benchmarks with Spidermonkey'
+        'js-bench-v8': 'JavaScript shell benchmarks with Google V8'
+        'node': 'Node tests'
+        'py3': 'Python 3 unit tests'
+        'A': 'Android Gradle tests'
+        'Bpgo': 'Profile-guided optimization builds'
+        'Btime': 'Browsertime performance tests on Firefox'
+        'Btime-cache': 'Browsertime performance tests on Firefox with populated bytecode cache.'
+        'Btime-1proc': 'Browsertime performance tests on Firefox without e10s'
+        'Btime-nofis': 'Browsertime tests on Firefox without fission enabled'
+        'Btime-P-nofis': 'Browsertime power tests on Firefox without fission enabled'
+        'Btime-Prof-nofis': 'Browsertime tests on Firefox with profiling and without fission enabled'
+        'Btime-P-nofis-refbrow': 'Browsertime Power Usage Tests on reference browser without fission enabled'
+        'Btime-P-nofis-fenix': 'Browsertime Power Usage Tests on Fenix without fission enabled'
+        'Btime-live-nofis-fenix': 'Browsertime tests on Fenix without fission enabled using live sites'
+        'Btime-nofis-fenix': 'Browsertime tests on Fenix without fission enabled'
+        'Btime-webext-nofis-fenix': 'Browsertime performance tests on Fenix with extensions and without fission enabled'
+        'Btime-webext': 'Browsertime performance tests on Firefox with extensions'
+        'Btime-live-nofis': 'Browsertime tests on Firefox without fission enabled using live sites'
+        'Btime-nofis-refbrow': 'Browsertime tests on reference browser without fission enabled'
+        'Btime-live-nofis-ChR': 'Browsertime tests on Chrome without fission enabled using live sites'
+        'Btime-Prof': 'Browsertime performance tests on Firefox with Gecko Profiling'
+        'Btime-Prof-1proc': 'Browsertime performance tests on Firefox with Gecko Profiling and without e10s'
+        'Btime-live': 'Browsertime performance tests on Firefox'
+        'Btime-live-fenix': 'Browsertime performance tests on Firefox'
+        'Btime-live-ChR': 'Browsertime performance tests on Firefox'
+        'Btime-live-Cr': 'Browsertime performance tests on Google Chromium'
+        'Btime-live-Saf': 'Browsertime performance tests on Safari'
+        'Btime-ChR': 'Browsertime performance tests on Google Chrome Release'
+        'Btime-nofis-ChR': 'Browsertime performance tests on Google Chrome Release without fission enabled'
+        'Btime-Cr': 'Browsertime performance tests on Google Chromium'
+        'Btime-P': 'Browsertime power tests on Firefox/Geckoview'
+        'Btime-P-fenix': 'Browsertime power tests on Fenix'
+        'Btime-P-refbrow': 'Browsertime power tests on reference browser'
+        'Btime-fenix': 'Browsertime performance tests on Fenix'
+        'Btime-refbrow': 'Browsertime performance tests on the reference browser'
+        'Btime-Saf': 'Browsertime performance tests on Safari'
+        'Btime-CaR': 'Browsertime performance tests on Chromium-as-Release'
+        'Btime-nofis-CaR': 'Browsertime performance tests on Chromium-as-Release without fission enabled'
+        'Fetch': 'Fetch and store content'
+        'Fxfn': 'Firefox functional tests'
+        'l10n-bump': 'L10n Bumper'
+        'M': 'Mochitests'
+        'M-cf': 'Mochitests confirm failure'
+        'M-condprof': "Mochitests with conditioned profile"
+        'M-condprof-cf': "Mochitests confirm failure with conditioned profile"
+        'M-fis-hv': "Mochitests that run on Fission with isolateHighValue isolation strategy (Android-specific)"
+        'M-fis-hv-cf': "Mochitests confirm failure that run on Fission with isolateHighValue isolation strategy (Android-specific)"
+        'M-headless': 'Headless Mochitests'
+        'M-headless-cf': 'Headless Mochitests confirm failure'
+        'M-headless-spi-nw': 'Headless Mochitests with fission and socketprocess networking.'
+        'M-headless-spi-nw-cf': 'Headless Mochitests confirm failure with fission and socketprocess networking.'
+        'M-http3': 'Mochitests with Http/3 server'
+        'M-http3-cf': 'Mochitests confirm failure with Http/3 server'
+        'M-http2': 'Mochitests with Http/2 server'
+        'M-http2-cf': 'Mochitests confirm failure with Http/2 server'
+        'M-aab': 'Mochitests with AAB test_runner.'
+        'M-aab-cf': 'Mochitests confirm failure with AAB test_runner.'
+        'M-aab-nofis': 'Mochitests with AAB test_runner without fission enabled.'
+        'M-aab-nofis-cf': 'Mochitests confirm failure with AAB test_runner without fission enabled.'
+        'M-1proc': 'Mochitests without e10s or fission'
+        'M-1proc-cf': 'Mochitests confirm failure without e10s or fission'
+        'M-a11y-checks': 'Mochitests with accessibility checks enabled'
+        'M-a11y-checks-cf': 'Mochitests confirm failure with accessibility checks enabled'
+        'M-xorig': 'Mochitests with cross-origin and fission enabled'
+        'M-xorig-cf': 'Mochitests confirm failure with cross-origin and fission enabled'
+        'M-gli': 'Mochitests with WebGL over IPC'
+        'M-gli-cf': 'Mochitests confirm failure with WebGL over IPC'
+        'M-nofis': 'Mochitests without fission enabled'
+        'M-nofis-cf': 'Mochitests confirm failure without fission enabled'
+        'M-spi': 'Mochitests with socket process'
+        'M-spi-cf': 'Mochitests confirm failure with socket process'
+        'M-spi-nofis': 'Mochitests with socket process without fission enabled'
+        'M-spi-nofis-cf': 'Mochitests confirm failure with socket process without fission enabled'
+        'M-spi-nw': 'Mochitests with networking on socket process'
+        'M-spi-nw-cf': 'Mochitests confirm failure with networking on socket process'
+        'M-spi-nw-nofis': 'Mochitests with networking on socket process without fission enabled'
+        'M-spi-nw-nofis-cf': 'Mochitests confirm failure with networking on socket process without fission enabled'
+        'M-spi-nw-1proc': 'Mochitests with networking on socket process without e10s'
+        'M-spi-nw-1proc-cf': 'Mochitests confirm failure with networking on socket process without e10s'
+        'M-swr': 'Mochitests with software webrender enabled'
+        'M-swr-cf': 'Mochitests confirm failure with software webrender enabled'
+        'M-swr-a11y-checks': 'Mochitests with software webrender and accessibility checks enabled'
+        'M-swr-a11y-checks-cf': 'Mochitests confirm failure with software webrender and accessibility checks enabled'
+        'M-swr-1proc': 'Mochitests with software webrender enabled without e10s'
+        'M-swr-1proc-cf': 'Mochitests confirm failure with software webrender enabled without e10s'
+        'M-swr-nofis': 'Mochitests with software webrender without fission enabled'
+        'M-swr-nofis-cf': 'Mochitests confirm failure with software webrender without fission enabled'
+        'M-wmfme': 'Mochitests with Windows Media Foundation media engine enabled'
+        'M-wmfme-cf': 'Mochitests confirm failure with Windows Media Foundation media engine enabled'
+        'M-mda-gpu': 'Mochitests Media on GPU worker'
+        'M-mda-gpu-cf': 'Mochitests confirm failure Media on GPU worker'
+        'M-f': 'Mochitest failures'
+        'M-f-swr': 'Mochitest failures software webrender'
+        'M-f-cf': 'Mochitest failures w/confirm failure'
+        'M-f-swr-cf': 'Mochitest failures software webrender w/confirm failure'
+        'M-dt-no-eft-nofis': 'DevTools Mochitests with EFT disabled without fission enabled'
+        'M-dt-no-eft-nofis-cf': 'DevTools Mochitests confirm failure with EFT disabled without fission enabled'
+        'M-msix': 'Mochitests from MSIX builds'
+        'M-msix-cf': 'Mochitests confirm failure from MSIX builds'
+        'MSI': 'Repack installers into MSIs'
+        'MSIs': 'Signing of Repacked installers of MSIs'
+        'MSIX': 'Repack into MSIX package'
+        'MSIXs': 'Signing of Repack into MSIX package'
+        'Pup': "Puppeteer tests"
+        'R': 'Reftests'
+        'R-cf': 'Reftests confirm failure'
+        'R-nofis': 'Reftests without fission enabled'
+        'R-nofis-cf': 'Reftests confirm failure without fission enabled'
+        'R-swr': 'Reftests with software webrender enabled'
+        'R-swr-cf': 'Reftests confirm failure with software webrender enabled'
+        'R-swr-nofis': 'Reftests with software webrender enabled without fission enabled'
+        'R-swr-nofis-cf': 'Reftests confirm failure with software webrender enabled without fission enabled'
+        'R-wr-dc0': 'Reftests with dcomp disabled'
+        'R-wr-dc0-cf': 'Reftests confirm failure with dcomp disabled'
+        'R-wr-dc1-p': 'Reftests with dcomp present but not overlays'
+        'R-wr-dc1-p-cf': 'Reftests confirm failure with dcomp present but not overlays'
+        'R-wr-dc2-o': 'Reftests with dcomp overlays but not compositing'
+        'R-wr-dc2-o-cf': 'Reftests confirm failure with dcomp overlays but not compositing'
+        'R-wr-dc3-c': 'Reftests with dcomp compositing'
+        'R-wr-dc3-c-cf': 'Reftests confirm failure with dcomp compositing'
+        'Rap': 'Raptor performance tests on Firefox'
+        'Rap-live': 'Raptor performance tests on Firefox with live sites'
+        'Rap-Prof': 'Raptor performance tests on Firefox with Gecko Profiling'
+        'Rap-ChR': 'Raptor performance tests on Google Chrome Release'
+        'Rap-Cr': 'Raptor performance tests on Google Chromium'
+        'Rap-refbrow': 'Raptor performance tests on the reference browser'
+        'T': 'Talos performance tests'
+        'T-gli': 'Talos performance tests with WebGL over IPC'
+        'T-Prof': 'Talos performance tests on Firefox with Gecko Profiling'
+        'T-Prof-gli': 'Talos performance tests with WebGL over IPC and Gecko Profiling'
+        'T-swr': 'Talos performance tests with software webrender enabled'
+        'tt': 'Telemetry tests'
+        'tt-nofis': 'Telemetry tests without fission enabled'
+        'SY': 'Are we slim yet tests by TaskCluster'
+        'W': 'Web platform tests'
+        'W-cf': 'Web platform tests confirm failure'
+        'W-nofis': 'Web platform tests without fission enabled'
+        'W-nofis-cf': 'Web platform tests confirm failure without fission enabled'
+        'W-headless': 'Headless web platform tests'
+        'W-headless-cf': 'Headless web platform tests confirm failure'
+        'W-swr-nofis': 'Web platform tests with software webrender enabled without fission enabled'
+        'W-swr-nofis-cf': 'Web platform tests confirm failure with software webrender enabled without fission enabled'
+        'W-swr': 'Web platform tests with software webrender enabled'
+        'W-swr-cf': 'Web platform tests confirm falure with software webrender enabled'
+        'W-b': 'Web platform tests (backlog)'
+        'W-b-nofis': 'Web platform tests (backlog) without fission enabled'
+        'W-pb': 'Web platform tests with private browsing enabled'
+        'X': 'Xpcshell tests'
+        'X-cf': 'Xpcshell tests confirm failure'
+        'X-condprof': 'Xpcshell tests with a conditioned profile'
+        'X-condprof-cf': 'Xpcshell tests confirm failure with a conditioned profile'
+        'X-nofis': 'Xpcshell tests without fission enabled'
+        'X-nofis-cf': 'Xpcshell tests confirm failure without fission enabled'
+        'X-spi-nw': 'Xpcshell tests with networking on socket process'
+        'X-spi-nw-cf': 'Xpcshell tests confirm failure with networking on socket process'
+        'X-spi-nw-nofis': 'Xpcshell tests with networking on socket process without fission enabled'
+        'X-spi-nw-nofis-cf': 'Xpcshell tests confirm failure with networking on socket process without fission enabled'
+        'X-f': 'Xpcshell tests that fail on a given config'
+        'X-f-spi-nw': 'Xpcshell tests that fail on a given config w/socket process'
+        'X-msix': 'Xpcshell tests on msix packages'
+        'X-msix-cf': 'Xpcshell tests confirm failure on msix packages'
+        'L10n': 'Localised Repacks'
+        'L10n-Rpk': 'Localized Repackaged Repacks'
+        'deb-L10n': 'Localized Debian Repacks'
+        'BM': 'Beetmover'
+        'BMR': 'Beetmover repackages'
+        'BM-apt': 'Beetmover .deb packages'
+        'c-Up': 'Balrog submission of complete updates'
+        'css': 'Checksum signing for source'
+        'rs': 'Repackage signing'
+        'BMcs': 'Beetmover checksums'
+        'BMcslang': 'Beetmover checksums for language packs'
+        'BMcss': 'Beetmover checksums for source'
+        'Deb8': 'Packages for Debian 8'
+        'Deb8-32': 'Packages for Debian 8 32-bits'
+        'Deb9': 'Packages for Debian 9'
+        'Deb10': 'Packages for Debian 10'
+        'Deb11': 'Packages for Debian 11'
+        'Deb12': 'Packages for Debian 12'
+        'Ub18': 'Packages for Ubuntu 18.04'
+        'Ub20': 'Packages for Ubuntu 20.04'
+        'Ub22': 'Packages for Ubuntu 22.04'
+        'I': 'Docker Image Builds'
+        'TA': 'Toolchain builds for Android'
+        'TL': 'Toolchain builds for Linux 64-bits'
+        'TL32': 'Toolchain builds for Linux 32-bits'
+        'TM': 'Toolchain builds for OSX'
+        'TMW': 'Toolchain builds for Windows MinGW'
+        'TW32': 'Toolchain builds for Windows 32-bits'
+        'TW64': 'Toolchain builds for Windows 64-bits'
+        'WMC32': 'MinGW-Clang builds for Windows 32-bits'
+        'WMC64': 'MinGW-Clang builds for Windows 64-bits'
+        'Searchfox': 'Searchfox builds'
+        'SM': 'Spidermonkey builds'
+        'p': 'Partial generation'
+        'ps': 'Partials signing'
+        'ms': 'Complete MAR signing'
+        'ms-stage': 'Autograph-stage MAR signing test'
+        'Rel': 'Release promotion'
+        'Snap': 'Snap image generation'
+        'Flatpak': 'Flatpak image generation'
+        'langpack': 'Langpack sigatures and uploads'
+        'TPS': 'Sync tests'
+        'UV': 'Update verify'
+        'UVnext': 'Update verify for esr-next'
+        'pydep': 'python dependency update'
+        'WR': 'WebRender standalone'
+        'Wgpu': 'WebGPU standalone'
+        'cpp': 'C/C++ checks'
+        'pedantic': 'pedantic checks'
+        'text': 'Check on texts'
+        'misc': 'Misc checks'
+        'js': 'JavaScript checks'
+        'py': 'Python checks'
+        'java': 'Java checks'
+        'rust': 'Rust checks'
+        'Static-Analysis': 'Full tree static-analysis'
+        'SS': 'Shadow scheduler'
+        'Sel': 'Selenium Snap tests'
+        'Sentry': 'Sentry synchronization'
+        'test-info': 'Test manifest skip/fail information'
+        'condprof': 'Conditioned Profile Builder'
+        'doc': 'Documentation'
+        'GhS': 'GitHub Synchronization'
+        'perftest': 'Performance tests'
+        'perftest-detect': 'Performance regression detection tooling'
+        'perftest-chrome': 'Performance tests using Chrone'
+        'perftest-http3': 'Performance tests with HTTP/3'
+        'l10n': 'Localization checks'
+        'fxrec': 'Desktop startup recorder (fxrecord)'
+        'wc': 'webcompat'
+        'Boot': 'Bootstrap'
+        'Attr-L10n': 'Build Attribution'
+
+index:
+    products:
+        - 'firefox'
+        - 'fennec'
+        - 'mobile'
+        - 'static-analysis'
+        - 'devedition'
+        - 'source'
+        - 'system-symbols'
+        - 'geckodriver'
+
+try:
+    # We have a few platforms for which we want to do some "extra" builds, or at
+    # least build-ish things.  Sort of.  Anyway, these other things are implemented
+    # as different "platforms".  These do *not* automatically ride along with "-p
+    # all"
+    ridealong-builds:
+        'linux':
+            - 'sm-plain-linux32'
+            - 'sm-arm-sim-linux32'
+        'linux64':
+            - 'sm-plain-linux64'
+            - 'sm-nojit-linux64'
+            - 'sm-nonunified-linux64'
+            - 'sm-arm-sim-linux32'
+            - 'sm-arm64-sim-linux64'
+            - 'sm-compacting-linux64'
+            - 'sm-rootanalysis-linux64'
+            - 'sm-package-linux64'
+            - 'sm-tsan-linux64'
+            - 'sm-asan-linux64'
+            - 'sm-msan-linux64'
+            - 'sm-fuzzing-linux64'
+        'win32':
+            - 'sm-plain-win32'
+            - 'sm-compacting-win32'
+
+release-promotion:
+    products:
+        - 'devedition'
+        - 'fennec'
+        - 'firefox'
+    rebuild-kinds:
+        - docker-image
+        - fetch
+        - packages
+        - toolchain
+    flavors:
+        promote_devedition:
+            product: devedition
+            target-tasks-method: promote_desktop
+            partial-updates: true
+        promote_firefox:
+            product: firefox
+            target-tasks-method: promote_desktop
+            partial-updates: true
+        promote_firefox_partner_repack:
+            product: firefox
+            rebuild-kinds:
+                - release-partner-repack
+                - release-partner-repack-chunking-dummy
+                - release-partner-repack-signing
+                - release-partner-repack-mac-signing
+                - release-partner-repack-mac-notarization
+                - release-partner-repack-repackage
+                - release-partner-repack-repackage-signing
+                - release-partner-repack-beetmover
+            target-tasks-method: promote_desktop
+        promote_firefox_partner_attribution:
+            product: firefox
+            rebuild-kinds:
+                - release-partner-attribution
+                - release-partner-attribution-beetmover
+            target-tasks-method: promote_desktop
+        promote_firefox_rc:
+            product: firefox
+            is-rc: true
+            target-tasks-method: promote_desktop
+            partial-updates: true
+        push_devedition:
+            product: devedition
+            target-tasks-method: push_desktop
+            partial-updates: true
+        push_firefox:
+            product: firefox
+            target-tasks-method: push_desktop
+            partial-updates: true
+        ship_devedition:
+            product: devedition
+            target-tasks-method: ship_desktop
+            version-bump: true
+            partial-updates: true
+        ship_firefox:
+            product: firefox
+            target-tasks-method: ship_desktop
+            version-bump: true
+            partial-updates: true
+        ship_firefox_rc:
+            product: firefox
+            is-rc: true
+            target-tasks-method: ship_desktop
+            partial-updates: true
+
+
+merge-automation:
+    behaviors:
+        central-to-beta:
+            fetch-version-from: "browser/config/version.txt"
+            version-files:
+                - filename: "config/milestone.txt"
+                  new-suffix: ''
+                - filename: "browser/config/version.txt"
+                  new-suffix: ''
+                - filename: "browser/config/version_display.txt"
+                  new-suffix: 'b1'
+            replacements:
+                - - browser/config/mozconfigs/linux32/l10n-mozconfig
+                  - ac_add_options --with-branding=browser/branding/nightly
+                  - ac_add_options --enable-official-branding
+                - - browser/config/mozconfigs/linux64/l10n-mozconfig
+                  - ac_add_options --with-branding=browser/branding/nightly
+                  - ac_add_options --enable-official-branding
+                - - browser/config/mozconfigs/win32/l10n-mozconfig
+                  - ac_add_options --with-branding=browser/branding/nightly
+                  - ac_add_options --enable-official-branding
+                - - browser/config/mozconfigs/win64/l10n-mozconfig
+                  - ac_add_options --with-branding=browser/branding/nightly
+                  - ac_add_options --enable-official-branding
+                - - browser/config/mozconfigs/win64-aarch64/l10n-mozconfig
+                  - ac_add_options --with-branding=browser/branding/nightly
+                  - ac_add_options --enable-official-branding
+                - - browser/config/mozconfigs/macosx64/l10n-mozconfig
+                  - ac_add_options --with-branding=browser/branding/nightly
+                  - ac_add_options --enable-official-branding
+            merge-old-head: true
+            base-tag: 'FIREFOX_BETA_{major_version}_BASE'
+            end-tag: 'FIREFOX_BETA_{major_version}_END'
+            from-repo: 'https://hg.mozilla.org/mozilla-central'
+            from-branch: 'central'
+            to-repo: 'https://hg.mozilla.org/releases/mozilla-beta'
+            to-branch: 'beta'
+        early-to-late-beta:
+            fetch-version-from: "browser/config/version.txt"
+            version-files: []
+            replacements:
+                - - build/defines.sh
+                  - EARLY_BETA_OR_EARLIER=1
+                  - EARLY_BETA_OR_EARLIER=
+            merge-old-head: false
+            to-repo: 'https://hg.mozilla.org/releases/mozilla-beta'
+            to-branch: 'beta'
+        beta-to-release:
+            fetch-version-from: "browser/config/version.txt"
+            version-files:
+                - filename: "browser/config/version_display.txt"
+                  new-suffix: ''
+            replacements: []
+            merge-old-head: true
+            base-tag: 'FIREFOX_RELEASE_{major_version}_BASE'
+            end-tag: 'FIREFOX_RELEASE_{major_version}_END'
+            from-repo: 'https://hg.mozilla.org/releases/mozilla-beta'
+            from-branch: 'beta'
+            to-repo: 'https://hg.mozilla.org/releases/mozilla-release'
+            to-branch: 'release'
+        release-to-esr:
+            fetch-version-from: "browser/config/version.txt"
+            version-files:
+                - filename: "browser/config/version_display.txt"
+                  new-suffix: 'esr'
+            replacements: []
+            merge-old-head: false
+            end-tag: "FIREFOX_ESR_{major_version}_BASE"
+            to-repo: 'https://hg.mozilla.org/releases/mozilla-esr115'
+            to-branch: 'esr115'
+        bump-central:
+            fetch-version-from: "browser/config/version.txt"
+            version-files:
+                - filename: "config/milestone.txt"
+                  version-bump: "major"
+                  new-suffix: 'a1'
+                - filename: "browser/config/version.txt"
+                  version-bump: "major"
+                  new-suffix: 'a1'
+                - filename: "browser/config/version_display.txt"
+                  version-bump: "major"
+                  new-suffix: 'a1'
+            replacements:
+                - - "services/sync/modules/constants.sys.mjs"
+                  - 'WEAVE_VERSION = "1.{current_weave_version}.0"'
+                  - 'WEAVE_VERSION = "1.{next_weave_version}.0"'
+            merge-old-head: false
+            end-tag: 'FIREFOX_NIGHTLY_{major_version}_END'
+            to-repo: 'https://hg.mozilla.org/mozilla-central'
+            to-branch: 'central'
+        bump-esr115:
+            fetch-version-from: "browser/config/version.txt"
+            version-files:
+                - filename: "config/milestone.txt"
+                  version-bump: "minor"
+                - filename: "browser/config/version.txt"
+                  version-bump: "minor"
+                - filename: "browser/config/version_display.txt"
+                  version-bump: "minor"
+            replacements: []
+            merge-old-head: false
+            to-repo: 'https://hg.mozilla.org/releases/mozilla-esr115'
+            to-branch: 'esr115'
+
+scriptworker:
+    # See additional configuration in taskcluster/gecko_taskgraph/util/scriptworker.py
+    scope-prefix: 'project:releng'
+
+partner-urls:
+    release-partner-repack:
+        by-release-product:
+            default: null
+            firefox:
+                by-release-type:
+                    default: null
+                    beta|release.*:
+                        by-release-level:
+                            production: 'git@github.com:mozilla-partners/repack-manifests.git'
+                            staging: 'git@github.com:moz-releng-automation-stage/repack-manifests.git'
+                    esr.*:
+                        by-release-level:
+                            production: 'git@github.com:mozilla-partners/esr-repack-manifests.git'
+                            staging: 'git@github.com:moz-releng-automation-stage/esr-repack-manifests.git'
+    release-partner-attribution:
+        by-release-product:
+            default: null
+            firefox:
+                by-release-type:
+                    default: null
+                    beta|release.*:
+                        by-release-level:
+                            production: 'git@github.com:mozilla-partners/repack-manifests.git'
+                            staging: 'git@github.com:moz-releng-automation-stage/repack-manifests.git'
+                    esr.*:
+                        by-release-level:
+                            production: 'git@github.com:mozilla-partners/esr-repack-manifests.git'
+                            staging: 'git@github.com:moz-releng-automation-stage/esr-repack-manifests.git'
+    release-eme-free-repack:
+        by-release-product:
+            default: null
+            firefox:
+                by-release-type:
+                    default: null
+                    beta|release.*:
+                        by-release-level:
+                            production: 'git@github.com:mozilla-partners/mozilla-EME-free-manifest.git'
+                            staging: 'git@github.com:moz-releng-automation-stage/mozilla-EME-free-manifest.git'
+
+
+task-priority:
+    by-project:
+        'mozilla-release': 'highest'
+        'mozilla-esr.*': 'very-high'
+        'mozilla-beta': 'high'
+        'mozilla-central': 'medium'
+        'autoland': 'low'
+        'mozilla-inbound': 'low'
+        'default': 'very-low'
+
+taskgraph:
+    register: gecko_taskgraph:register
+
+workers:
+    aliases:
+        b-linux.*:
+            provisioner: '{trust-domain}-{level}'
+            implementation: docker-worker
+            os: linux
+            worker-type: '{alias}'
+        b-win2012:
+            provisioner: '{trust-domain}-{level}'
+            implementation: generic-worker
+            os: windows
+            worker-type: '{alias}-azure'
+        b-win2022:
+            provisioner: '{trust-domain}-{level}'
+            implementation: generic-worker
+            os: windows
+            worker-type: '{alias}'
+        image:
+            provisioner: '{trust-domain}-{level}'
+            implementation: docker-worker
+            os: linux
+            worker-type: '{alias}'
+        images:
+            provisioner: '{trust-domain}-{level}'
+            implementation: docker-worker
+            os: linux
+            worker-type: '{alias}'
+        images-gcp:
+            provisioner: '{trust-domain}-{level}'
+            implementation: docker-worker
+            os: linux
+            worker-type: '{alias}'
+        addon:
+            provisioner: scriptworker-k8s
+            implementation: push-addons
+            os: scriptworker
+            worker-type:
+                by-release-level:
+                    production: '{trust-domain}-3-addon'
+                    staging: '{trust-domain}-1-addon'
+        balrog:
+            provisioner: scriptworker-k8s
+            implementation: balrog
+            os: scriptworker
+            worker-type:
+                by-release-level:
+                    production: '{trust-domain}-3-balrog'
+                    staging: '{trust-domain}-1-balrog'
+        bouncer:
+            provisioner: scriptworker-k8s
+            # Note that this implementation doesn't correspond with an
+            # payload_builder, there are several `bouncer-*` implemenations.
+            implementation: bouncer
+            os: scriptworker
+            worker-type:
+                by-release-level:
+                    production: '{trust-domain}-3-bouncer'
+                    staging: '{trust-domain}-1-bouncer'
+        beetmover:
+            provisioner: scriptworker-k8s
+            implementation: beetmover
+            os: scriptworker
+            worker-type:
+                by-release-level:
+                    production: '{trust-domain}-3-beetmover'
+                    staging: '{trust-domain}-1-beetmover'
+        shipit:
+            provisioner: scriptworker-k8s
+            implementation: shipit
+            os: scriptworker
+            worker-type:
+                by-release-level:
+                    production: '{trust-domain}-3-shipit'
+                    staging: '{trust-domain}-1-shipit'
+        linux-depsigning:
+            provisioner: scriptworker-k8s
+            implementation: scriptworker-signing
+            os: linux
+            worker-type: '{trust-domain}-t-signing'
+        linux-signing:
+            provisioner: scriptworker-k8s
+            implementation: scriptworker-signing
+            os: linux
+            worker-type:
+                by-release-level:
+                    production: '{trust-domain}-3-signing'
+                    staging: '{trust-domain}-t-signing'
+        mac-depsigning:
+            provisioner: scriptworker-prov-v1
+            implementation: scriptworker-signing
+            os: macosx
+            worker-type: depsigning-mac-v1
+        mac-signing:
+            provisioner: scriptworker-prov-v1
+            implementation: scriptworker-signing
+            os: macosx
+            worker-type:
+                by-release-level:
+                    production: signing-mac-v1
+                    staging: depsigning-mac-v1
+        tree:
+            provisioner: scriptworker-k8s
+            implementation: treescript
+            os: scriptworker
+            worker-type:
+                by-release-level:
+                    production: '{trust-domain}-3-tree'
+                    staging:
+                        by-project:
+                            autoland: '{trust-domain}-3-tree'
+                            default: '{trust-domain}-1-tree'
+        tree-dev:
+            provisioner: scriptworker-k8s
+            implementation: treescript
+            os: scriptworker
+            worker-type: '{trust-domain}-1-tree-dev'
+        t-bitbar-gw.*:
+            provisioner: proj-autophone
+            implementation: generic-worker
+            os: linux-bitbar
+            worker-type: 'gecko-{alias}'
+        t-linux(-large|-xlarge|-xlarge-source):
+            provisioner: '{trust-domain}-t'
+            implementation: docker-worker
+            os: linux
+            worker-type: '{alias}-gcp'
+        t-linux-kvm:
+            provisioner: '{trust-domain}-t'
+            implementation: docker-worker
+            os: linux
+            worker-type: 't-linux-kvm-gcp'
+        t-linux-talos:
+            provisioner: releng-hardware
+            implementation: generic-worker
+            os: linux
+            worker-type: 'gecko-{alias}'
+        t-linux-talos-1804:
+            provisioner: releng-hardware
+            implementation: generic-worker
+            os: linux
+            worker-type: 'gecko-{alias}'
+        t-linux-wayland:
+            provisioner: '{trust-domain}-t'
+            implementation: generic-worker
+            os: linux
+            worker-type: 't-linux-vm-2204-wayland'
+        t-osx-1015-r8:
+            provisioner: releng-hardware
+            implementation: generic-worker
+            os: macosx
+            worker-type: 'gecko-{alias}'
+        t-osx-1100-m1:
+            provisioner: releng-hardware
+            implementation: generic-worker
+            os: macosx
+            worker-type: 'gecko-{alias}'
+        t-osx-1400-m2:
+            provisioner: releng-hardware
+            implementation: generic-worker
+            os: macosx
+            worker-type: 'gecko-{alias}'
+        t-osx-1015-power:
+            provisioner: releng-hardware
+            implementation: generic-worker
+            os: macosx
+            worker-type: 'gecko-{alias}'
+        t-linux-xlarge-pgo:
+            provisioner:
+                by-level:
+                    '3': '{trust-domain}-{level}'
+                    default: '{trust-domain}-t'
+            implementation: docker-worker
+            os: linux
+            worker-type: 't-linux-xlarge-gcp'
+        b-osx-1015:
+            provisioner: releng-hardware
+            implementation: generic-worker
+            os: macosx
+            worker-type:
+                by-level:
+                    '3': 'gecko-3-b-osx-1015'
+                    default: 'gecko-1-b-osx-1015'
+        b-osx-arm64:
+            provisioner: releng-hardware
+            implementation: generic-worker
+            os: macosx
+            worker-type:
+                by-level:
+                    '3': 'gecko-3-b-osx-arm64'
+                    default: 'gecko-1-b-osx-arm64'
+        t-win10-64(|-gpu-s|-source):
+            provisioner: '{trust-domain}-t'
+            implementation: generic-worker
+            os: windows
+            worker-type: '{alias}'
+        t-win10-64(-hw|-ref-hw|-1803-hw):
+            provisioner: releng-hardware
+            implementation: generic-worker
+            os: windows
+            worker-type: 'gecko-{alias}'
+        win11-64-2009(-hw-ref):
+            provisioner: releng-hardware
+            implementation: generic-worker
+            os: windows
+            worker-type: '{alias}'
+        win10-64-2009(|-gpu|-ssd|-source|-ssd-gpu):
+            provisioner: 'gecko-t'
+            implementation: generic-worker
+            os: windows
+            worker-type: '{alias}'
+        t-win11-64(|-gpu-s|-source):
+            provisioner: '{trust-domain}-t'
+            implementation: generic-worker
+            os: windows
+            worker-type: '{alias}'
+        win11-64-2009(|-gpu|-ssd|-source|-ssd-gpu):
+            provisioner: 'gecko-t'
+            implementation: generic-worker
+            os: windows
+            worker-type: '{alias}'
+        t-win7-32-gpu:
+            provisioner: '{trust-domain}-t'
+            implementation: generic-worker
+            os: windows
+            worker-type: '{alias}'
+        t-win7-32:
+            provisioner: releng-hardware
+            implementation: generic-worker
+            os: windows
+            worker-type: 'gecko-{alias}-hw'
+        t-win64-aarch64-laptop:
+            provisioner: bitbar
+            implementation: generic-worker
+            os: windows
+            worker-type: 'gecko-{alias}'
+        succeed:
+            provisioner: built-in
+            implementation: succeed
+            os: none
+            worker-type: succeed
+        misc:
+            provisioner: '{trust-domain}-t'
+            implementation: docker-worker
+            os: linux
+            worker-type: misc-gcp
+
+
+mac-notarization:
+    mac-entitlements:
+        by-platform:
+            macosx64.*:
+                by-release-level:
+                    production: security/mac/hardenedruntime/v1/production/browser.xml
+                    default: security/mac/hardenedruntime/v1/developer/browser.xml
+            default: ''
+    mac-requirements:
+        by-platform:
+            macosx64.*: build/package/mac_osx/requirements.plist
+            default: ''
+
+mac-signing:
+    hardened-sign-config:
+        by-hardened-signing-type:
+            production:
+                - deep: false
+                  runtime: true
+                  force: true
+                  entitlements: security/mac/hardenedruntime/v2/production/plugin-container.xml
+                  globs:
+                      - "/Contents/MacOS/plugin-container.app"
+
+                - deep: false
+                  runtime: true
+                  force: true
+                  entitlements: security/mac/hardenedruntime/v2/production/media-plugin-helper.xml
+                  globs:
+                      - "/Contents/MacOS/media-plugin-helper.app"
+
+                - deep: false
+                  runtime: true
+                  force: true
+                  # These files are signed wihtout entitlements
+                  globs:
+                      - "/Contents/MacOS/crashreporter.app"
+                      - "/Contents/MacOS/updater.app"
+                      - "/Contents/Library/LaunchServices/org.mozilla.updater"
+                      - "/Contents/MacOS/XUL"
+                      - "/Contents/MacOS/pingsender"
+                      - "/Contents/MacOS/minidump-analyzer"
+                      - "/Contents/MacOS/*.dylib"
+                      - "/Contents/Resources/gmp-clearkey/*/*.dylib"
+
+                - deep: false
+                  runtime: true
+                  force: true
+                  entitlements:
+                      by-build-platform:
+                          .*devedition.*: security/mac/hardenedruntime/v2/production/firefoxdeveloperedition.browser.xml
+                          default:
+                              by-project:
+                                  mozilla-central: security/mac/hardenedruntime/v2/production/nightly.browser.xml
+                                  default: security/mac/hardenedruntime/v2/production/firefox.browser.xml
+                  globs:
+                      - "/"  # The .app
+
+            default:
+                - deep: false
+                  runtime: true
+                  force: true
+                  entitlements: security/mac/hardenedruntime/v2/developer/plugin-container.xml
+                  globs:
+                      - "/Contents/MacOS/plugin-container.app"
+
+                - deep: false
+                  runtime: true
+                  force: true
+                  entitlements: security/mac/hardenedruntime/v2/developer/media-plugin-helper.xml
+                  globs:
+                      - "/Contents/MacOS/media-plugin-helper.app"
+
+                - deep: false
+                  runtime: true
+                  force: true
+                  entitlements: security/mac/hardenedruntime/v2/developer/utility.xml
+                  globs:
+                      - "/Contents/MacOS/crashreporter.app"
+                      - "/Contents/MacOS/updater.app"
+                      - "/Contents/Library/LaunchServices/org.mozilla.updater"
+                      - "/Contents/MacOS/pingsender"
+                      - "/Contents/MacOS/minidump-analyzer"
+
+                - deep: false
+                  runtime: true
+                  force: true
+                  # These files are signed without entitlements
+                  globs:
+                      - "/Contents/MacOS/XUL"
+                      - "/Contents/MacOS/*.dylib"
+                      - "/Contents/Resources/gmp-clearkey/*/*.dylib"
+
+                - deep: false
+                  runtime: true
+                  force: true
+                  entitlements: security/mac/hardenedruntime/v2/developer/browser.xml
+                  globs:
+                      - "/"  # The .app
+
+expiration-policy:
+    by-project:
+        try:
+            default: 28 days
+            shortest: 7 days
+            short: 14 days
+            medium: 28 days
+            long: 28 days
+        autoland:
+            default: 1 year
+            shortest: 14 days
+            short: 3 months
+            medium: 1 year
+            # To avoid keeping shippable builds for over a year
+            long: 1 year
+        default:
+            default: 3 months
+            shortest: 7 days
+            short: 1 month
+            medium: 1 year
+            long: 1 year
diff --git a/taskcluster/ci/cron-bouncer-check/kind.yml b/taskcluster/ci/cron-bouncer-check/kind.yml
new file mode 100644
index 0000000000..62d2c80960
--- /dev/null
+++ b/taskcluster/ci/cron-bouncer-check/kind.yml
@@ -0,0 +1,82 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.bouncer_check:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: bouncer-check
+    description: bouncer check
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1200
+        docker-image: {in-tree: "update-verify"}
+    run:
+        sparse-profile: mozharness
+        extra-config:
+            bouncer_prefix: "https://download.mozilla.org/"
+    attributes:
+        build_platform: linux64
+        build_type: opt
+        cron: true
+    treeherder:
+        symbol: Rel(ckbouncer)
+        kind: test
+        tier: 1
+
+jobs:
+    firefox:
+        shipping-product: firefox
+        index:
+            product: firefox
+            job-name: firefox-bouncer-check
+        run:
+            config:
+                by-release-type:
+                    nightly:
+                        - releases/bouncer_firefox_nightly.py
+                    beta:
+                        - releases/bouncer_firefox_beta.py
+                    release:
+                        - releases/bouncer_firefox_release.py
+                    esr.*:
+                        - releases/bouncer_firefox_esr.py
+                    default:
+                        - releases/bouncer_firefox_beta.py
+            product-field:
+                by-project:
+                    mozilla-central: FIREFOX_NIGHTLY
+                    mozilla-beta: LATEST_FIREFOX_RELEASED_DEVEL_VERSION
+                    mozilla-release: LATEST_FIREFOX_VERSION
+                    mozilla-esr115: FIREFOX_ESR
+                    # mozilla-esrXX: FIREFOX_ESR_NEXT
+                    default: LATEST_FIREFOX_DEVEL_VERSION
+            products-url: https://product-details.mozilla.org/1.0/firefox_versions.json
+        treeherder:
+            platform: firefox-release/opt
+
+    devedition:
+        shipping-product: devedition
+        run-on-projects: [mozilla-beta]
+        index:
+            product: devedition
+            job-name: devedition-bouncer-check
+        run:
+            config:
+                by-project:
+                    mozilla-beta:
+                        - releases/bouncer_firefox_devedition.py
+                    default:
+                        - releases/dev_bouncer_firefox_devedition.py
+            product-field:
+                by-project:
+                    mozilla-beta: LATEST_FIREFOX_RELEASED_DEVEL_VERSION
+                    default: LATEST_FIREFOX_DEVEL_VERSION
+            products-url: https://product-details.mozilla.org/1.0/firefox_versions.json
+        treeherder:
+            platform: devedition-release/opt
diff --git a/taskcluster/ci/diffoscope/artifacts.yml b/taskcluster/ci/diffoscope/artifacts.yml
new file mode 100644
index 0000000000..0e901f50fd
--- /dev/null
+++ b/taskcluster/ci/diffoscope/artifacts.yml
@@ -0,0 +1,52 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    # Artifact builds always build with nightly branding, so these checks don't
+    # work on non-trunk branches.
+    run-on-projects: ['trunk']
+    unpack: true
+    fail-on-diff: true
+    pre-diff-commands:
+        # jogfile.json is only created in artifact builds.
+        - rm b/"$RESOURCE_DIR"/jogfile.json
+        # Remove noise from differences in line numbers in preprocessor output
+        # due to #if/#else branches.
+        - sed -i '/^\/\/@line /d' {a,b}/"$RESOURCE_DIR"/browser/defaults/preferences/firefox.js
+        # bug 1825141 - telemetry.fog.artifact_build isn't stable between
+        # artifact and not-artifact builds, so remove its line if present.
+        - sed -i '/telemetry\.fog\.artifact\_build/d' b/"$RESOURCE_DIR"/browser/defaults/preferences/firefox.js
+        # artifact builds are not fed with accepted-mar-channel-ids
+        - sed -i '/ACCEPTED_MAR_CHANNEL_IDS/d' {a,b}/"$RESOURCE_DIR"/update-settings.ini
+    # Extra diffoscope arguments to account for:
+    # - about:buildconfig being expectedly different.
+    extra-args: >-
+        --exclude b/"$RESOURCE_DIR"/chrome/toolkit/content/global/buildconfig.html
+    # This is necessary to avoid building the dependencies on every push on autoland
+    # A more robust fix for this is https://bugzilla.mozilla.org/show_bug.cgi?id=1643346
+    optimization:
+        skip-unless-expanded: null
+
+artifact-linux64-validation:
+    symbol: Linux64a
+    new: artifact-build-linux64-artifact/opt
+    original: build-linux64/opt
+
+artifact-macosx64-validation:
+    symbol: Macosx64a
+    new: artifact-build-macosx64-artifact/opt
+    original: build-macosx64/opt
+
+artifact-win64-validation:
+    symbol: Win64a
+    new: artifact-build-win64-artifact/opt
+    original: build-win64/opt
+    # Extra diffoscope arguments to account for:
+    # - about:buildconfig being expectedly different.
+    # - There are some differences in PE metadata in helper.exe because
+    #   it's (re)built in the EME build, and that part of the build is
+    #   not reproducible.
+    extra-args: >-
+        --exclude b/"$RESOURCE_DIR"/chrome/toolkit/content/global/buildconfig.html
+        --exclude b/firefox/uninstall/helper.exe
diff --git a/taskcluster/ci/diffoscope/kind.yml b/taskcluster/ci/diffoscope/kind.yml
new file mode 100644
index 0000000000..89b38fc665
--- /dev/null
+++ b/taskcluster/ci/diffoscope/kind.yml
@@ -0,0 +1,61 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - artifact-build
+    - build
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.diffoscope:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+# Note: --exclude-command .--line-numbers is because of
+# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=879003
+# That skips `objdump --disassemble --line-numbers` and falls back to
+# `objdump --disassemble`
+# Note: the .chk excludes are for files that are known to differ between
+# builds because they are signed with an ephemeral private key that is
+# generated for each build.
+job-defaults:
+    tier: 2
+    args: >-
+        --output-empty
+        --no-default-limits
+        --max-page-size 100000000
+        --max-page-diff-block-lines 10000
+        --exclude-directory-metadata=yes
+        --exclude-command .--line-numbers
+
+jobs-from:
+    - artifacts.yml
+    - reproducible.yml
+
+# Make a task for each diff we might want. The following are just examples,
+# Both original and new can point to builds from the full set of tasks or
+# from other sets through an index-search. Other kinds than `build` can be
+# compared (for example, static-analysis), provided you adjust the
+# kind-dependencies above.
+# jobs:
+#     android-build-vs-previous-try:
+#         symbol: A
+#         new: build-android-arm/opt
+#         original: {index-search: gecko.v2.try.revision.aabd5deb0156f9b55ab60ad6a01ebfc4580bf2e1.mobile.android-arm-opt}
+#     linux64-build-vs-previous-try:
+#         symbol: L
+#         new: build-linux64/opt
+#         original: {index-search: gecko.v2.try.revision.aabd5deb0156f9b55ab60ad6a01ebfc4580bf2e1.firefox.linux64-opt}
+#         extra-args: >-
+#             --exclude-command .--hex-dump=.gnu_debuglink
+#     macosx-build-vs-previous-try:
+#         symbol: M
+#         new: build-macosx64/opt
+#         original: {index-search: gecko.v2.try.revision.aabd5deb0156f9b55ab60ad6a01ebfc4580bf2e1.firefox.macosx64-opt}
+#     win32-build-vs-previous-try:
+#         symbol: W
+#         new: build-win32/opt
+#         original: {index-search: gecko.v2.try.revision.aabd5deb0156f9b55ab60ad6a01ebfc4580bf2e1.firefox.win32-opt}
diff --git a/taskcluster/ci/diffoscope/reproducible.yml b/taskcluster/ci/diffoscope/reproducible.yml
new file mode 100644
index 0000000000..4f89bfca4e
--- /dev/null
+++ b/taskcluster/ci/diffoscope/reproducible.yml
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    fail-on-diff: true
+    run-on-projects: ['mozilla-central']
+
+reproducible-linux32:
+    symbol: Linux32
+    new: build-linux-reproduced/opt
+    original: build-linux-shippable/opt
+
+reproducible-linux32-generated-files:
+    symbol: Linux32g
+    artifact: target.generated-files.tar.gz
+    new: build-linux-reproduced/opt
+    original: build-linux-shippable/opt
+
+reproducible-linux64:
+    symbol: Linux64
+    new: build-linux64-reproduced/opt
+    original: build-linux64-shippable/opt
+
+reproducible-linux64-generated-files:
+    symbol: Linux64g
+    artifact: target.generated-files.tar.gz
+    new: build-linux64-reproduced/opt
+    original: build-linux64-shippable/opt
diff --git a/taskcluster/ci/docker-image/kind.yml b/taskcluster/ci/docker-image/kind.yml
new file mode 100644
index 0000000000..149186fb3b
--- /dev/null
+++ b/taskcluster/ci/docker-image/kind.yml
@@ -0,0 +1,247 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - packages
+
+transforms:
+    - gecko_taskgraph.transforms.docker_image:transforms
+    - gecko_taskgraph.transforms.cached_tasks:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+# make a task for each docker-image we might want.  For the moment, since we
+# write artifacts for each, these are whitelisted, but ideally that will change
+# (to use subdirectory clones of the proper directory), at which point we can
+# generate tasks for every docker image in the directory, secure in the
+# knowledge that unnecessary images will be omitted from the target task graph
+jobs:
+    image_builder:
+        symbol: I(ib)
+    # Neither the ubuntu1804-*raw nor the ubuntu1804-*packages images can have
+    # packages dependencies.
+    ubuntu1804-raw:
+        symbol: I(ub18-raw)
+        definition: debian-raw
+        args:
+            BASE_IMAGE: ubuntu:bionic
+    ubuntu1804-packages:
+        symbol: I(ub18-pkg)
+        definition: debian-packages
+        parent: ubuntu1804-raw
+    ubuntu1804-i386-raw:
+        symbol: I(ub18-32-raw)
+        definition: debian-raw
+        args:
+            BASE_IMAGE: i386/ubuntu:bionic
+    ubuntu1804-i386-packages:
+        symbol: I(ub18-32-pkg)
+        definition: debian-packages
+        parent: ubuntu1804-i386-raw
+    ubuntu1804-base:
+        symbol: I(ub18-base)
+        parent: ubuntu1804-raw
+        packages:
+            - ub18-mercurial
+            - ub18-python-zstandard
+            - ub18-python-psutil
+    ubuntu1804-test-base:
+        symbol: I(ub18-test-base)
+        parent: ubuntu1804-base
+        packages:
+            - ub18-libc6
+            - ub18-pygobject
+            - ub18-pyatspi
+            - ub18-32-libc6
+    ubuntu1804-test:
+        symbol: I(ub18-test)
+        parent: ubuntu1804-test-base
+    ubuntu1804-build-python:
+        symbol: I(ub18-build-python)
+        parent: ubuntu1804-base
+    # Neither the ubuntu1804-*raw nor the ubuntu1804-*packages images can have
+    # packages dependencies.
+    ubuntu2004-raw:
+        symbol: I(ub20-raw)
+        definition: debian-raw
+        args:
+            BASE_IMAGE: ubuntu:focal
+    ubuntu2204-raw:
+        symbol: I(ub22-raw)
+        definition: debian-raw
+        args:
+            BASE_IMAGE: ubuntu:jammy
+    ubuntu2004-packages:
+        symbol: I(ub20-pkg)
+        definition: debian-packages
+        parent: ubuntu2004-raw
+    ubuntu2204-packages:
+        symbol: I(ub22-pkg)
+        definition: debian-packages
+        parent: ubuntu2204-raw
+    ubuntu2004-base:
+        symbol: I(ub20-base)
+        definition: debian-base
+        parent: ubuntu2004-raw
+        packages:
+            - ub20-mercurial
+            - ub20-python-zstandard
+    ubuntu2204-base:
+        symbol: I(ub22-base)
+        definition: debian-base
+        parent: ubuntu2204-raw
+        packages:
+            - ub22-mercurial
+            - ub22-python-zstandard
+    # Neither the debian8-*raw nor the debian8-*packages images can have
+    # packages dependencies.
+    debian8-raw:
+        symbol: I(deb8-raw)
+        definition: debian-raw
+        args:
+            BASE_IMAGE: debian:jessie-20210208
+            DIST: jessie
+    debian8-packages:
+        symbol: I(deb8-pkg)
+        definition: debian-packages
+        parent: debian8-raw
+    debian8-i386-raw:
+        symbol: I(deb8-32-raw)
+        definition: debian-raw
+        args:
+            BASE_IMAGE: i386/debian:jessie-20210208
+            DIST: jessie
+    debian8-i386-packages:
+        symbol: I(deb8-32-pkg)
+        definition: debian-packages
+        parent: debian8-i386-raw
+    custom-v8:
+        symbol: I(custom-v8)
+        parent: debian12-base
+    # Chromium-as-Release
+    custom-car-linux:
+        symbol: I(custom-car-linux)
+        parent: debian12-base
+    # Chromium-as-Release Android
+    custom-car-android:
+        symbol: I(custom-car-android)
+        parent: debian12-base
+    valgrind-build:
+        symbol: I(vb)
+        parent: debian12-amd64-build
+        packages:
+            - deb12-valgrind
+    lint:
+        symbol: I(lnt)
+        parent: debian12-base
+    # Neither the debian12-raw nor the debian12-packages images can have
+    # packages dependencies.
+    debian12-raw:
+        symbol: I(deb12-raw)
+        definition: debian-raw
+        args:
+            BASE_IMAGE: debian:bookworm-20230612
+            DIST: bookworm
+            SNAPSHOT: '20230611T210420Z'
+    debian12-packages:
+        symbol: I(deb12-pkg)
+        definition: debian-packages
+        parent: debian12-raw
+    debian12-base:
+        symbol: I(deb12-base)
+        definition: debian-base
+        parent: debian12-raw
+        packages:
+            - deb12-mercurial
+            - deb12-python-zstandard
+    debian12-amd64-build:
+        symbol: I(deb12)
+        parent: debian12-base
+        definition: debian-build
+    debian12-repackage:
+        symbol: I(deb12-rpk)
+        parent: debian12-base
+        definition: debian-repackage
+        packages:
+            - deb12-mercurial
+    deb12-toolchain-build:
+        symbol: I(deb12-toolchain)
+        parent: debian12-base
+        definition: toolchain-build
+    android-build:
+        symbol: I(agb)
+        parent: debian12-base
+    fetch:
+        symbol: I(fetch)
+        parent: debian12-raw
+        packages:
+            - deb12-python-zstandard
+    static-analysis-build:
+        symbol: I(static-analysis-build)
+        parent: debian12-base
+    gdb-test:
+        symbol: I(gdb)
+        parent: debian12-amd64-build
+    index-task:
+        symbol: I(idx)
+    funsize-update-generator:
+        symbol: I(pg)
+    update-verify:
+        symbol: I(uv)
+        parent: ubuntu2004-base
+    diffoscope:
+        symbol: I(diff)
+        parent: debian12-base
+    partner-repack:
+        symbol: I(PR)
+        parent: debian12-base
+        definition: partner-repack
+    updatebot:
+        symbol: I(3rdp)
+        parent: push-to-try
+    periodic-updates:
+        symbol: I(file)
+        parent: debian12-base
+    firefox-snap:
+        symbol: I(snap)
+    firefox-flatpak:
+        symbol: I(flatpak)
+    webrender:
+        symbol: I(webrender)
+        parent: debian12-base
+    condprof:
+        symbol: I(condprof)
+        parent: ubuntu1804-test
+    github-sync:
+        symbol: I(github-sync)
+        parent: debian12-base
+    sentry:
+        symbol: I(sentry)
+        parent: debian12-base
+    system-symbols-mac:
+        symbol: I(system-symbols-mac)
+        parent: debian12-base
+    system-symbols-win:
+        symbol: I(system-symbols-win)
+        parent: debian12-base
+    system-symbols-win-gfx:
+        symbol: I(system-symbols-win-gfx)
+        parent: debian12-base
+    system-symbols-linux-scraper:
+        symbol: I(system-symbols-linux)
+        parent: debian12-base
+    push-to-try:
+        symbol: I(push-to-try)
+        parent: debian12-base
+    decision:
+        symbol: I(decision)
+        parent: ubuntu2004-base
+    snap-build-core22:
+        symbol: I(snap22-build)
+        parent: ubuntu2204-base
+        definition: snap-coreXX-build
+        args:
+            SNAP_BASE: core22
+            SNAP_LIST: "gnome-42-2204 gtk-common-themes gnome-42-2204-sdk"
diff --git a/taskcluster/ci/fetch/benchmarks.yml b/taskcluster/ci/fetch/benchmarks.yml
new file mode 100644
index 0000000000..7e31470baf
--- /dev/null
+++ b/taskcluster/ci/fetch/benchmarks.yml
@@ -0,0 +1,19 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+octane:
+    description: Octane benchmark
+    fetch:
+        type: static-url
+        url: https://github.com/mozilla/perf-automation/releases/download/octane-v1/octane-0f5b8d48d4a9.zip
+        sha256: 38425ee1abfc5feca178b2f60fbd82b5873897c345112a85359be00024402f9f
+        size: 1816138
+
+web-tooling-benchmark:
+    description: Web Tooling Benchmark
+    fetch:
+        type: static-url
+        url: https://github.com/mozilla/perf-automation/releases/download/V1/web-tooling-benchmark-b2ac25c897c9.zip
+        sha256: 93b0b51df0cec3ca9bfa0bdf81d782306dcf18532e39b3ff3180409125daaff1
+        size: 5444135
diff --git a/taskcluster/ci/fetch/browsertime.yml b/taskcluster/ci/fetch/browsertime.yml
new file mode 100644
index 0000000000..614ddce593
--- /dev/null
+++ b/taskcluster/ci/fetch/browsertime.yml
@@ -0,0 +1,180 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+win64-ffmpeg-4.4.1:
+    description: 'Win64 ffmpeg'
+    fetch:
+        type: static-url
+        # url: https://github.com/GyanD/codexffmpeg/releases/tag/4.4.1
+        url: https://github.com/mozilla/perf-automation/releases/download/FFMPEG-v4.4.1/ffmpeg-4.4.1-full_build.zip
+        sha256: f0f407041f82905c310b79f4f76973815700d1e438a10c3cbce66a345ff4f457
+        size: 134760541
+
+linux64-ffmpeg-4.4.1:
+    description: 'Linux64 ffmpeg'
+    fetch:
+        type: static-url
+        # url: https://www.johnvansickle.com/ffmpeg/old-releases/
+        url: https://github.com/mozilla/perf-automation/releases/download/FFMPEG-v4.4.1/ffmpeg-4.4.1-i686-static.tar.xz
+        sha256: 1f38d1c99b6eb3d36f709a481f5a5526448567a800ee9cddcfe4be54f8b68e62
+        size: 17592088
+
+mac64-ffmpeg-4.4.1:
+    description: 'Mac64 ffmpeg'
+    fetch:
+        type: static-url
+        # url: https://evermeet.cx/pub/ffmpeg/
+        url: https://github.com/mozilla/perf-automation/releases/download/FFMPEG-v4.4.1/ffmpeg-macos.zip
+        sha256: 9d07411bce176f56314cc5624f5df51f9cffa76a59e3e81abe2175d4ebaf87ae
+        size: 49100208
+
+linux64-chromedriver:
+    description: 'Linux64 chromedriver'
+    fetch:
+        type: static-url
+        url: https://chromedriver.storage.googleapis.com/2.46/chromedriver_linux64.zip
+        sha256: 461919e080e19335a34224e2d353b96b07c7d068621aa940f9c136e86d090047
+        size: 5404417
+
+win32-chromedriver-120:
+    description: "Win32 chromedriver v120"
+    fetch:
+        type: static-url
+        artifact-name: chromedriver_win32_120.tar.zst
+        add-prefix: "120"
+        url: https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/120.0.6099.18/win32/chromedriver-win32.zip
+        sha256: f07b320a3e739c619b9bda0c62169d6173350e7415317125fba76c8b002458ce
+        size: 7360109
+
+linux64-chromedriver-120:
+    description: "Linux64 chromedriver v120"
+    fetch:
+        type: static-url
+        artifact-name: chromedriver_linux64_120.tar.zst
+        add-prefix: "120"
+        url: https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/120.0.6099.18/linux64/chromedriver-linux64.zip
+        sha256: 3990b819b9b8866784dcd634e284e6e02f2b92f81ba89fb7b6c98061ad2b3c6e
+        size: 8575905
+
+mac64-chromedriver-120:
+    description: "Mac64 chromedriver v120"
+    fetch:
+        type: static-url
+        artifact-name: chromedriver_mac64_120.tar.zst
+        add-prefix: "120"
+        url: https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/120.0.6099.18/mac-x64/chromedriver-mac-x64.zip
+        sha256: f645302e046e4314477b72244335c60098563d202fc0c9467df7d71b850c21f1
+        size: 9235668
+
+mac-arm-chromedriver-120:
+    description: "Mac64 arm chromedriver v120"
+    fetch:
+        type: static-url
+        artifact-name: chromedriver_mac-arm_120.tar.zst
+        add-prefix: "120"
+        url: https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/120.0.6099.18/mac-arm64/chromedriver-mac-arm64.zip
+        sha256: 141e0abedfe2a1df6c3eb334becdf1993dce8b4fc0f906457606470c6542f236
+        size: 8293703
+
+win32-chromedriver-121:
+    description: "Win32 chromedriver v121"
+    fetch:
+        type: static-url
+        artifact-name: chromedriver_win32_121.tar.zst
+        add-prefix: "121"
+        url: https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/121.0.6167.57/win32/chromedriver-win32.zip
+        sha256: a6618777d23e2d65a4938c150df1c7516be6d8e52748f635c7bf1df36e0a143f
+        size: 7989797
+
+
+linux64-chromedriver-121:
+    description: "Linux64 chromedriver v121"
+    fetch:
+        type: static-url
+        artifact-name: chromedriver_linux64_121.tar.zst
+        add-prefix: "121"
+        url: https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/121.0.6167.57/linux64/chromedriver-linux64.zip
+        sha256: f4a3fe88694cd67484041d01dfc33e9769b9709335e97e3283f11da0e95a73f8
+        size: 8625832
+
+
+mac64-chromedriver-121:
+    description: "Mac64 chromedriver v121"
+    fetch:
+        type: static-url
+        artifact-name: chromedriver_mac64_121.tar.zst
+        add-prefix: "121"
+        url: https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/121.0.6167.57/mac-x64/chromedriver-mac-x64.zip
+        sha256: c89fa84060d18ed03f3f68de67400051691836b85e8b7d77b386d6239f9b8ced
+        size: 9233941
+
+
+mac-arm-chromedriver-121:
+    description: "Mac-arm chromedriver v121"
+    fetch:
+        type: static-url
+        artifact-name: chromedriver_mac-arm_121.tar.zst
+        add-prefix: "121"
+        url: https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/121.0.6167.57/mac-arm64/chromedriver-mac-arm64.zip
+        sha256: e162f11cebcb7d255daf3f7af2e8f6046389f2b5264c0a991022957af0524afc
+        size: 8318525
+
+win32-chromedriver-122:
+    description: "Win32 chromedriver v122"
+    fetch:
+        type: static-url
+        artifact-name: chromedriver_win32_122.tar.zst
+        add-prefix: "122"
+        url: https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/122.0.6261.18/win32/chrome-win32.zip
+        sha256: 4778e327a30972fa1d39a9aabc60c04e82553b7cafa2f8f768eaec9ee0935eab
+        size: 134566218
+
+linux64-chromedriver-122:
+    description: "Linux64 chromedriver v122"
+    fetch:
+        type: static-url
+        artifact-name: chromedriver_linux64_122.tar.zst
+        add-prefix: "122"
+        url: https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/122.0.6261.18/linux64/chrome-linux64.zip
+        sha256: 5514382fc80e092f76a6a7ea85bdfcafacd7e62e1c831a7842f0eca003383c5d
+        size: 149627735
+
+mac64-chromedriver-122:
+    description: "Mac64 chromedriver v122"
+    fetch:
+        type: static-url
+        artifact-name: chromedriver_mac64_122.tar.zst
+        add-prefix: "122"
+        url: https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/122.0.6261.18/mac-x64/chrome-mac-x64.zip
+        sha256: 753d2814bb82d723289eea76628e9b043bc36666d7cf285876dc4f19ca811c04
+        size: 155446914
+
+mac-arm-chromedriver-122:
+    description: "Mac64 arm chromedriver v122"
+    fetch:
+        type: static-url
+        artifact-name: chromedriver_mac-arm_122.tar.zst
+        add-prefix: "122"
+        url: https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/122.0.6261.18/mac-arm64/chrome-mac-arm64.zip
+        sha256: 1edd4096771669e6c429eff5a459f520defd43afb798fc86d58608d95355be6e
+        size: 146946870
+
+upload-speed-test-file:
+    description: "File used for the upload speed performance test"
+    fetch:
+        type: static-url
+        artifact-name: upload-test-32MB.dat
+        url: https://github.com/mozilla/perf-automation/raw/master/test_files/upload-test-32MB.dat
+        sha256: 72caa47a951e9f37d1e1be2119a64b1fbc6348c4f37d574bee4587e02b8f96a5
+        size: 32000000
+
+firefox-addons:
+    description: "Download a tar archive of real Firefox extensions xpi files available on AMO (used to run perftests with real extensions installed)"
+    fetch:
+        type: static-url
+        artifact-name: firefox-addons.tar.zst
+        add-prefix: firefox-addons/
+        url: https://github.com/mozilla/perf-automation/raw/c9e497eaa86f45538e3509120947215c6f97c95b/test_files/firefox-addons.tar
+        sha256: 20372ff1d58fc33d1568f8922fe66e2e2e01c77663820344d2a364a8ddd68281
+        size: 3584000
diff --git a/taskcluster/ci/fetch/chromium-fetch.yml b/taskcluster/ci/fetch/chromium-fetch.yml
new file mode 100644
index 0000000000..88f7e4fc62
--- /dev/null
+++ b/taskcluster/ci/fetch/chromium-fetch.yml
@@ -0,0 +1,38 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    fetch:
+        type: chromium-fetch
+        script: /builds/worker/bin/fetch-chromium.py
+
+linux64-chromium:
+    description: 'Linux64 Chromium Fetch'
+    fetch:
+        platform: linux
+        artifact-name: chromium-linux.tar.bz2
+
+win32-chromium:
+    description: 'Windows32 Chromium Fetch'
+    fetch:
+        platform: win32
+        artifact-name: chromium-win32.tar.bz2
+
+win64-chromium:
+    description: 'Windows64 Chromium Fetch'
+    fetch:
+        platform: win64
+        artifact-name: chromium-win64.tar.bz2
+
+mac-chromium:
+    description: 'MacOSX Chromium Fetch'
+    fetch:
+        platform: mac
+        artifact-name: chromium-mac.tar.bz2
+
+mac-chromium-arm:
+    description: 'MacOSX ARM Chromium Fetch'
+    fetch:
+        platform: mac-arm
+        artifact-name: chromium-mac-arm.tar.bz2
diff --git a/taskcluster/ci/fetch/kind.yml b/taskcluster/ci/fetch/kind.yml
new file mode 100644
index 0000000000..027ab7f1eb
--- /dev/null
+++ b/taskcluster/ci/fetch/kind.yml
@@ -0,0 +1,20 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.fetch:transforms
+    - gecko_taskgraph.transforms.try_job:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+jobs-from:
+    - benchmarks.yml
+    - browsertime.yml
+    - chromium-fetch.yml
+    - resource-monitor.yml
+    - toolchain-clang-tidy-external.yml
+    - toolchains.yml
+    - updatebot.yml
diff --git a/taskcluster/ci/fetch/moz.build b/taskcluster/ci/fetch/moz.build
new file mode 100644
index 0000000000..28b8003edf
--- /dev/null
+++ b/taskcluster/ci/fetch/moz.build
@@ -0,0 +1,8 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+with Files("updatebot.yml"):
+    BUG_COMPONENT = ("Developer Infrastructure", "Mach Vendor & Updatebot")
diff --git a/taskcluster/ci/fetch/resource-monitor.yml b/taskcluster/ci/fetch/resource-monitor.yml
new file mode 100644
index 0000000000..2fe94cb4f9
--- /dev/null
+++ b/taskcluster/ci/fetch/resource-monitor.yml
@@ -0,0 +1,10 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+resource-monitor:
+    description: Resource monitoring tools
+    fetch:
+        type: git
+        repo: https://github.com/mozilla-releng/resource-monitor
+        revision: 17371502a3b04579375d707844e6bf08dee95d22
diff --git a/taskcluster/ci/fetch/toolchain-clang-tidy-external.yml b/taskcluster/ci/fetch/toolchain-clang-tidy-external.yml
new file mode 100644
index 0000000000..d71058c06b
--- /dev/null
+++ b/taskcluster/ci/fetch/toolchain-clang-tidy-external.yml
@@ -0,0 +1,13 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+civet-source:
+    description: Repository for external static analysis checks
+    artifact-prefix: project/civet
+    fetch:
+        type: git
+        repo: git@github.com:mozilla-services/civet.git
+        revision: fa787d2047a5c3759e67f0df58415a984dcc8777
+        ssh-key: project/civet/github-deploy-key
+        artifact-name: civet-source.tar.zst
diff --git a/taskcluster/ci/fetch/toolchains.yml b/taskcluster/ci/fetch/toolchains.yml
new file mode 100644
index 0000000000..50ffb065b0
--- /dev/null
+++ b/taskcluster/ci/fetch/toolchains.yml
@@ -0,0 +1,714 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+binutils-2.31.1:
+    description: binutils 2.31.1 source code
+    fetch:
+        type: static-url
+        url: https://ftp.gnu.org/gnu/binutils/binutils-2.31.1.tar.xz
+        sha256: 5d20086ecf5752cc7d9134246e9588fa201740d540f7eb84d795b1f7a93bca86
+        size: 20467996
+        gpg-signature:
+            sig-url: "{url}.sig"
+            key-path: build/unix/build-binutils/3A24BC1E8FB409FA9F14371813FCEF89DD9E3C4F.key
+        artifact-name: binutils-source.tar.zst
+        strip-components: 1
+        add-prefix: binutils-source/
+
+binutils-2.41:
+    description: binutils 2.41 source code
+    fetch:
+        type: static-url
+        url: https://ftp.gnu.org/gnu/binutils/binutils-2.41.tar.xz
+        sha256: ae9a5789e23459e59606e6714723f2d3ffc31c03174191ef0d015bdf06007450
+        size: 26765692
+        gpg-signature:
+            sig-url: "{url}.sig"
+            key-path: build/unix/build-binutils/3A24BC1E8FB409FA9F14371813FCEF89DD9E3C4F.key
+        artifact-name: binutils-source.tar.zst
+        strip-components: 1
+        add-prefix: binutils-source/
+
+gcc-8.5.0:
+    description: GCC 8.5.0 source code
+    fetch:
+        type: static-url
+        url: https://ftp.gnu.org/gnu/gcc/gcc-8.5.0/gcc-8.5.0.tar.xz
+        sha256: d308841a511bb830a6100397b0042db24ce11f642dab6ea6ee44842e5325ed50
+        size: 63841008
+        gpg-signature:
+            sig-url: "{url}.sig"
+            key-path: build/unix/build-gcc/D3A93CAD751C2AF4F8C7AD516C35B99309B5FA62.key
+        artifact-name: gcc-source.tar.zst
+        strip-components: 1
+        add-prefix: gcc-source/
+
+gcc-9.5.0:
+    description: GCC 9.5.0 source code
+    fetch:
+        type: static-url
+        url: https://ftp.gnu.org/gnu/gcc/gcc-9.5.0/gcc-9.5.0.tar.xz
+        sha256: 27769f64ef1d4cd5e2be8682c0c93f9887983e6cfd1a927ce5a0a2915a95cf8f
+        size: 72462752
+        gpg-signature:
+            sig-url: "{url}.sig"
+            key-path: build/unix/build-gcc/7F74F97C103468EE5D750B583AB00996FC26A641.key
+        artifact-name: gcc-source.tar.zst
+        strip-components: 1
+        add-prefix: gcc-source/
+
+gcc-11.4.0:
+    description: GCC 11.4.0 source code
+    fetch:
+        type: static-url
+        url: https://ftp.gnu.org/gnu/gcc/gcc-11.4.0/gcc-11.4.0.tar.xz
+        sha256: 3f2db222b007e8a4a23cd5ba56726ef08e8b1f1eb2055ee72c1402cea73a8dd9
+        size: 79837032
+        gpg-signature:
+            sig-url: "{url}.sig"
+            key-path: build/unix/build-gcc/D3A93CAD751C2AF4F8C7AD516C35B99309B5FA62.key
+        artifact-name: gcc-source.tar.zst
+        strip-components: 1
+        add-prefix: gcc-source/
+
+gmp-6.1.0:
+    description: GMP 6.1.0 source code
+    fetch:
+        type: static-url
+        url: https://ftp.gnu.org/gnu/gmp/gmp-6.1.0.tar.bz2
+        sha256: 498449a994efeba527885c10405993427995d3f86b8768d8cdf8d9dd7c6b73e8
+        size: 2383840
+        gpg-signature:
+            sig-url: "{url}.sig"
+            key-path: build/unix/build-gcc/343C2FF0FBEE5EC2EDBEF399F3599FF828C67298.key
+        artifact-name: gmp-source.tar.zst
+        strip-components: 1
+        add-prefix: gmp-source/
+
+go-1.14.4:
+    description: Golang 1.14.4 build tools
+    fetch:
+        type: static-url
+        url: https://dl.google.com/go/go1.14.4.linux-amd64.tar.gz
+        sha256: aed845e4185a0b2a3c3d5e1d0a35491702c55889192bb9c30e67a3de6849c067
+        size: 123711003
+
+isl-0.16.1:
+    description: ISL 0.16.1 source code
+    fetch:
+        type: static-url
+        url: https://gcc.gnu.org/pub/gcc/infrastructure/isl-0.16.1.tar.bz2
+        sha256: 412538bb65c799ac98e17e8cfcdacbb257a57362acfaaff254b0fcae970126d2
+        size: 1626446
+        artifact-name: isl-source.tar.zst
+        strip-components: 1
+        add-prefix: isl-source/
+
+mpc-1.0.3:
+    description: mpc 1.0.3 source code
+    fetch:
+        type: static-url
+        url: https://ftp.gnu.org/gnu/mpc/mpc-1.0.3.tar.gz
+        sha256: 617decc6ea09889fb08ede330917a00b16809b8db88c29c31bfbb49cbf88ecc3
+        size: 669925
+        gpg-signature:
+            sig-url: "{url}.sig"
+            key-path: build/unix/build-gcc/AD17A21EF8AED8F1CC02DBD9F7D5C9BF765C61E3.key
+        artifact-name: mpc-source.tar.zst
+        strip-components: 1
+        add-prefix: mpc-source/
+
+mpfr-3.1.4:
+    description: mpfr 3.1.4 source code
+    fetch:
+        type: static-url
+        url: http://www.mpfr.org/mpfr-3.1.4/mpfr-3.1.4.tar.bz2
+        sha256: d3103a80cdad2407ed581f3618c4bed04e0c92d1cf771a65ead662cc397f7775
+        size: 1279284
+        gpg-signature:
+            sig-url: "{url}.asc"
+            key-path: build/unix/build-gcc/07F3DBBECC1A39605078094D980C197698C3739D.key
+        artifact-name: mpfr-source.tar.zst
+        strip-components: 1
+        add-prefix: mpfr-source/
+
+nasm-2.14.02:
+    description: nasm 2.14.02 source code
+    fetch:
+        type: static-url
+        url: https://www.nasm.us/pub/nasm/releasebuilds/2.14.02/nasm-2.14.02.tar.xz
+        sha256: e24ade3e928f7253aa8c14aa44726d1edf3f98643f87c9d72ec1df44b26be8f5
+        size: 827620
+
+nasm-2.15.05:
+    description: nasm 2.15.05 source code
+    fetch:
+        type: static-url
+        url: https://www.nasm.us/pub/nasm/releasebuilds/2.15.05/nasm-2.15.05.tar.xz
+        sha256: 3caf6729c1073bf96629b57cee31eeb54f4f8129b01902c73428836550b30a3f
+        size: 995732
+
+wix-3.14.0:
+    description: wix 3.14.0 binary release
+    # WIX doesn't use a wrapping toplevel DIR, so we should really repackage it when
+    # Bug 1479533 and related code is ready.
+    fetch:
+        type: static-url
+        url: https://github.com/wixtoolset/wix3/releases/download/wix314rtm/wix314-binaries.zip
+        sha256: 13f067f38969faf163d93a804b48ea0576790a202c8f10291f2000f0e356e934
+        size: 41282726
+
+zlib-1.3.1:
+    description: zlib 1.3.1 source code
+    fetch:
+        type: static-url
+        url: https://zlib.net/fossils/zlib-1.3.1.tar.gz
+        sha256: 9a93b2b7dfdac77ceba5a558a580e74667dd6fede4585b91eefb60f03b72df23
+        size: 1512791
+
+nsis-3.07:
+    description: nsis 3.07 source code
+    fetch:
+        type: static-url
+        url: https://downloads.sourceforge.net/project/nsis/NSIS%203/3.07/nsis-3.07-src.tar.bz2
+        sha256: 4dfad3388589985b4cd91d20e18e1458aa31e7d139b5b8adf25c3a9c1015efba
+        size: 1784292
+
+nsis-3.07-win:
+    description: nsis 3.07 for windows
+    fetch:
+        type: static-url
+        # Temporary: pull down our own repackage of NSIS, with its plugin DLLs signed by Mozilla
+        # See https://bugzilla.mozilla.org/show_bug.cgi?id=1751450#c38 for more details
+        # bug 1771192 tracks adding a signing task downstream of the NSIS toolchain task
+        # to fix this more robustly.
+        url: https://github.com/mozilla-releng/adhoc-signing-blobs/raw/nsis/nsis-3.07-signed.zip
+        sha256: 5856cd49b52870caa41814d71ce30c4304d5001b80c04f4eb7028ffedd91df7e
+        size: 2618390
+        artifact-name: nsis.tar.zst
+        strip-components: 1
+        add-prefix: nsis/
+
+upx-3.95-win:
+    description: upx 3.95 for windows
+    fetch:
+        type: static-url
+        url: https://hg.mozilla.org/mozilla-build/raw-file/3b8c537ca3c879551956ad47ca9f089583f647c5/upx-3.95-win64.zip
+        sha256: 5c076f87ba64d82f11513f4af0ceb07246a3540aa3c72ca3ffc2d53971fa56e3
+        size: 462820
+
+wine:
+    description: wine source code
+    fetch:
+        type: static-url
+        url: https://dl.winehq.org/wine/source/8.0/wine-8.0.2.tar.xz
+        sha256: 6ec8fb6f2c72d576cb11f52b2f8d59af64404802154651d122b98466d91dc847
+        size: 29060452
+        gpg-signature:
+            sig-url: "{url}.sign"
+            key-path: build/unix/build-gcc/DA23579A74D4AD9AF9D3F945CEFAC8EAAF17519D.key
+        artifact-name: wine.tar.zst
+        strip-components: 1
+        add-prefix: wine-source/
+
+cbindgen-0.26.0:
+    description: cbindgen source code
+    fetch:
+        type: git
+        repo: https://github.com/mozilla/cbindgen
+        revision: 703b53c06f9fe2dbc0193d67626558cfa84a0f62
+
+cctools-port:
+    description: cctools-port source code
+    fetch:
+        type: git
+        repo: https://github.com/tpoechtrager/cctools-port
+        revision: 30518813875aed656aa7f18b6d485feee25f8f87
+
+libtapi:
+    description: libtapi source code
+    fetch:
+        type: git
+        repo: https://github.com/tpoechtrager/apple-libtapi
+        revision: b4f141a16c7c82f75973429c92242a8c7de3ddb1
+
+ldid:
+    description: ldid source code
+    fetch:
+        type: git
+        repo: https://github.com/tpoechtrager/ldid
+        revision: 4bf8f4d60384a0693dbbe2084ce62a35bfeb87ab
+
+libdmg-hfsplus:
+    description: libdmg-hfsplug source code
+    fetch:
+        type: git
+        repo: https://github.com/mozilla/libdmg-hfsplus/
+        revision: a0a959bd25370c1c0a00c9ec525e3e78285adbf9
+
+hfsplus-tools:
+    description: hfstools-plus source code
+    fetch:
+        type: static-url
+        # Most-upstream is https://opensource.apple.com/source/diskdev_cmds/
+        url: https://src.fedoraproject.org/repo/pkgs/hfsplus-tools/diskdev_cmds-540.1.linux3.tar.gz/0435afc389b919027b69616ad1b05709/diskdev_cmds-540.1.linux3.tar.gz
+        sha256: b01b203a97f9a3bf36a027c13ddfc59292730552e62722d690d33bd5c24f5497
+        size: 411205
+
+xar:
+    description: xar source code
+    fetch:
+        type: git
+        repo: https://github.com/gabrielesvelto/xar
+        revision: 199ff76a7463f6b6a2548b4db29cd3dd5026df69
+
+bomutils:
+    description: bomutils (mkbom) source code
+    fetch:
+        type: git
+        repo: https://github.com/hogliux/bomutils
+        revision: 0e7dc7eefefb3a0ba2ef3a432cdc1089ac40740c
+
+rust-size:
+    description: rust-size source code
+    fetch:
+        type: git
+        repo: https://github.com/luser/rust-size
+        revision: ab659d93b1faba95307df952aefe3fbed3583669
+
+gn:
+    description: GN source code
+    fetch:
+        type: git
+        repo: https://gn.googlesource.com/gn
+        revision: 7e05276308f3d49f8514ef02afe4f94487b1efb2
+
+grcov:
+    description: grcov source code
+    fetch:
+        type: git
+        repo: https://github.com/mozilla/grcov
+        revision: 322fc39acacd75aca0ff1c0a1ec2a3e91f04011c
+
+sccache:
+    description: sccache source code
+    fetch:
+        type: git
+        repo: https://github.com/mozilla/sccache
+        # 0.7.6 release
+        revision: 794c987b7843f404b9e50513dae978f807ba0a60
+
+fxc2:
+    description: fxc2 source code
+    fetch:
+        type: git
+        repo: https://github.com/mozilla/fxc2
+        revision: 63ad74b7faa7033f2c1be9cc1cd0225241a1a9a5
+
+mingw-w64:
+    description: mingw-w64 source code
+    fetch:
+        type: git
+        repo: https://git.code.sf.net/p/mingw-w64/mingw-w64
+        revision: 95a2cf4b7260200c4a60f4f1d1127e72799a3541
+
+mingw-w64-trunk:
+    description: mingw-w64 master branch source code
+    attributes:
+        cached_task: false
+    fetch:
+        type: git
+        repo: https://git.code.sf.net/p/mingw-w64/mingw-w64
+        branch: master
+
+llvm-mingw:
+    description: llvm-mingw source code
+    fetch:
+        type: git
+        repo: https://github.com/mstorsjo/llvm-mingw
+        revision: 9f8e5cebd6dbbb7546e8917e6c59284699a48d26
+
+android-ndk-rs:
+    description: android-ndk-rs source code
+    fetch:
+        type: git
+        # Until there's a version of cargo-apk published on crates.io that has
+        # https://github.com/rust-windowing/android-ndk-rs/pull/236, we need to use
+        # an unpublished version. Additionally, until we update the NDK version used
+        # in gecko we must use our own patched version. See bug 1615148.
+        repo: https://github.com/jamienicol/android-ndk-rs
+        revision: 595f4e14a78371e3ab59b12f7bd8131f2ec5b4a1
+
+clang-8.0:
+    description: clang 8.0.0 source code
+    fetch:
+        type: git
+        repo: https://github.com/llvm/llvm-project
+        revision: d2298e74235598f15594fe2c99bbac870a507c59
+
+clang-14:
+    description: clang 14.0.5 source code
+    fetch:
+        type: git
+        repo: https://github.com/llvm/llvm-project
+        revision: 4bc1d0b51c8e488d78ab69c8b19cfbcd1f7db6a4
+
+clang-17:
+    description: clang 17.0.6 source code
+    fetch:
+        type: git
+        repo: https://github.com/llvm/llvm-project
+        revision: 6009708b4367171ccdbf4b5905cb6a803753fe18
+
+clang-18:
+    description: clang 18.1.0-rc2 source code
+    fetch:
+        type: git
+        repo: https://github.com/llvm/llvm-project
+        revision: c6c86965d967886ca5a2ed8968c949cd42cdd49a
+
+clang-trunk:
+    description: clang main branch source code
+    attributes:
+        cached_task: false
+    fetch:
+        type: git
+        repo: https://github.com/llvm/llvm-project
+        branch: main
+
+# We build stable rust from source so the resulting compiler acts as a nightly
+# rust compiler, allowing to use unstable features like -Zbuild-std and
+# sanitizers.
+rust-1.76.0:
+    description: Rust 1.76.0 source code
+    fetch:
+        type: git
+        include-dot-git: true
+        repo: https://github.com/rust-lang/rust/
+        revision: 07dca489ac2d933c78d3c5158e3f43beefeb02ce
+
+wasi-sdk-11:
+    description: wasi-sdk-11 source code
+    fetch:
+        type: git
+        repo: https://github.com/WebAssembly/wasi-sdk
+        revision: ceabbfe181599bca83d81e087a229797e472c09c
+
+wasi-sdk:
+    description: wasi-sdk-20 source code
+    fetch:
+        type: git
+        repo: https://github.com/WebAssembly/wasi-sdk
+        revision: 935fe1acd2fcd7ea4aed2d5ee4527482862b6344
+
+ninja:
+    description: ninja 1.9.0
+    fetch:
+        type: static-url
+        url: https://github.com/ninja-build/ninja/releases/download/v1.9.0/ninja-win.zip
+        sha256: 2d70010633ddaacc3af4ffbd21e22fae90d158674a09e132e06424ba3ab036e9
+        size: 254497
+        artifact-name: ninja.tar.zst
+        add-prefix: ninja/bin/
+
+cmake:
+    description: cmake 3.25.1
+    fetch:
+        type: static-url
+        url: https://github.com/Kitware/CMake/releases/download/v3.25.1/cmake-3.25.1-windows-x86_64.zip
+        sha256: d93958d87cc9b91983489f0b37a268b03a3c891894d11f5437fa2a5ce94aab24
+        size: 41460154
+        artifact-name: cmake.tar.zst
+        strip-components: 1
+        add-prefix: cmake/
+
+dump-syms:
+    description: dump_syms source code
+    fetch:
+        type: git
+        repo: https://github.com/mozilla/dump_syms/
+        revision: b1951e4ccec48a2e97460a7ec40be35aa79e0037
+
+rust-minidump:
+    description: rust-minidump 0.19.1 source code (for minidump-stackwalk)
+    fetch:
+        type: git
+        repo: https://github.com/rust-minidump/rust-minidump/
+        revision: c3de84b061339c686a572fb9f059e7ba3fad38d6
+
+fix-stacks:
+    description: fix-stacks source code
+    fetch:
+        type: git
+        repo: https://github.com/mozilla/fix-stacks/
+        revision: 1fb1bcc8cb4dd65fbe342853954651563a0a88e7
+
+winchecksec:
+    description: winchecksec source code
+    fetch:
+        type: git
+        repo: https://github.com/trailofbits/winchecksec/
+        revision: 93ffe67dbfc757bf6f440d80b8acf88e652ed60a
+
+sonatype-nexus:
+    description: Sonatype Nexus Maven repository service
+    fetch:
+        type: static-url
+        url: https://download.sonatype.com/nexus/oss/nexus-2.14.18-01-bundle.tar.gz
+        sha256: 350af8b270bec7fda5861a15b8a5b7870fd8903d0b9a210754113d5a966ce6a6
+        size: 83493896
+        artifact-name: sonatype-nexus.tar.zst
+        strip-components: 1
+        add-prefix: sonatype-nexus/
+
+jdk-8-linux64:
+    description: Java 8 JDK
+    fetch:
+        type: static-url
+        url: https://github.com/adoptium/temurin8-binaries/releases/download/jdk8u312-b07/OpenJDK8U-jdk_x64_linux_hotspot_8u312b07.tar.gz
+        sha256: 699981083983b60a7eeb511ad640fae3ae4b879de5a3980fe837e8ade9c34a08
+        size: 103016010
+        artifact-name: jdk-8.tar.zst
+        strip-components: 1
+        add-prefix: jdk-8/
+
+makecab:
+    description: makecab source code
+    fetch:
+        type: git
+        repo: https://github.com/luser/rust-makecab/
+        revision: 236cd02baefa754fc7a61b161c71d2aa13a87c2a
+
+nodejs-12-linux64:
+    description: nodejs 12 for x64 linux
+    fetch:
+        type: static-url
+        url: https://nodejs.org/dist/v12.22.12/node-v12.22.12-linux-x64.tar.xz
+        sha256: e6d052364bfa2c17da92cf31794100cfd709ba147415ddaeed2222eec9ca1469
+        size: 14584388
+        artifact-name: nodejs.tar.zst
+        strip-components: 1
+        add-prefix: node/
+
+nodejs-16-linux64:
+    description: nodejs 16 for x64 linux
+    fetch:
+        type: static-url
+        url: https://nodejs.org/dist/v16.19.0/node-v16.19.0-linux-x64.tar.xz
+        sha256: c88b52497ab38a3ddf526e5b46a41270320409109c3f74171b241132984fd08f
+        size: 22492000
+        artifact-name: nodejs.tar.zst
+        strip-components: 1
+        add-prefix: node/
+
+nodejs-16-macosx64:
+    description: nodejs 16 for x64 macOS
+    fetch:
+        type: static-url
+        url: https://nodejs.org/dist/v16.19.0/node-v16.19.0-darwin-x64.tar.xz
+        sha256: 601d1d632b9815dbb647f5cd440a95fa651110b5b4bcaf07ed3aa7886525716b
+        size: 20975524
+        artifact-name: nodejs.tar.zst
+        strip-components: 1
+        add-prefix: node/
+
+nodejs-18-macosx64:
+    description: nodejs 18 for x64 macOS
+    fetch:
+        type: static-url
+        url: https://nodejs.org/dist/v18.19.0/node-v18.19.0-darwin-x64.tar.xz
+        sha256: 4f60b40071c6a67482b99d22a5265839177b8706a2b13b493396f368f0b42b00
+        size: 22496376
+        artifact-name: nodejs.tar.zst
+        strip-components: 1
+        add-prefix: node/
+
+nodejs-16-macosx64-arm64:
+    description: nodejs 16 for arm64 macOS
+    fetch:
+        type: static-url
+        url: https://nodejs.org/dist/v16.19.0/node-v16.19.0-darwin-arm64.tar.xz
+        sha256: 7313c9db5f5140ece847a97f366032a10bddb6d87fa28a361ada918addcd5c73
+        size: 19363804
+        artifact-name: nodejs.tar.zst
+        strip-components: 1
+        add-prefix: node/
+
+nodejs-18-macosx64-arm64:
+    description: nodejs 18 for arm64 macOS
+    fetch:
+        type: static-url
+        url: https://nodejs.org/dist/v18.19.0/node-v18.19.0-darwin-arm64.tar.xz
+        sha256: 857885257c586fb13c93d33d326ca82056ba8b7445ce27cf34dd406add04158e
+        size: 20768464
+        artifact-name: nodejs.tar.zst
+        strip-components: 1
+        add-prefix: node/
+
+nodejs-16-win32:
+    description: nodejs 16 for x86 Windows
+    fetch:
+        type: static-url
+        url: https://nodejs.org/dist/v16.19.0/node-v16.19.0-win-x86.zip
+        sha256: 17e2bf8ed00b3d15321743104104c8b6ef55677dfc18ee2ed44de64fbf2c4def
+        size: 25424808
+        artifact-name: nodejs.tar.zst
+        strip-components: 1
+        add-prefix: node/
+
+nodejs-18-win32:
+    description: nodejs 18 for x86 Windows
+    fetch:
+        type: static-url
+        url: https://nodejs.org/dist/v18.19.0/node-v18.19.0-win-x86.zip
+        sha256: 3171148f735954bdca8adccb2200379e61142e0f5a2bdb4ca6432afb0d9951df
+        size: 27504941
+        artifact-name: nodejs.tar.zst
+        strip-components: 1
+        add-prefix: node/
+
+nodejs-16-win64:
+    description: nodejs 16 for x64 Windows
+    fetch:
+        type: static-url
+        url: https://nodejs.org/dist/v16.19.0/node-v16.19.0-win-x64.zip
+        sha256: 534ca7a24e999c81cec847a498cc43d47e2bb158f6edf639e5297f2718350e96
+        size: 27072850
+        artifact-name: nodejs.tar.zst
+        strip-components: 1
+        add-prefix: node/
+
+nodejs-18-win64:
+    description: nodejs 18 for x64 Windows
+    fetch:
+        type: static-url
+        url: https://nodejs.org/dist/v18.19.0/node-v18.19.0-win-x64.zip
+        sha256: 5311913d45e1fcc3643c58d1e3926eb85437b180f025fe5857413c9f02403645
+        size: 29332158
+        artifact-name: nodejs.tar.zst
+        strip-components: 1
+        add-prefix: node/
+
+nodejs-18-source:
+    description: nodejs 18 source
+    fetch:
+        type: static-url
+        url: https://nodejs.org/dist/v18.19.0/node-v18.19.0.tar.xz
+        sha256: f52b41af20596a9abd8ed75241837ec43945468221448bbf841361e2091819b6
+        size: 41248748
+        artifact-name: nodejs.tar.zst
+        strip-components: 1
+        add-prefix: node/
+
+gnumake:
+    description: GNU make source
+    fetch:
+        type: static-url
+        url: https://ftp.gnu.org/gnu/make/make-4.3.tar.gz
+        sha256: e05fdde47c5f7ca45cb697e973894ff4f5d79e13b750ed57d7b66d8defc78e19
+        size: 2317073
+        artifact-name: make.tar.zst
+        strip-components: 1
+        add-prefix: make/
+
+msix-packaging:
+    description: Microsoft msix-packaging
+    fetch:
+        type: git
+        repo: https://github.com/mozilla/msix-packaging
+        revision: 8164b7ac5a67688e18fa2497fb31ba13ce9bfb15
+
+pkgconf:
+    description: pkgconf 1.8.0
+    fetch:
+        type: static-url
+        url: https://distfiles.dereferenced.org/pkgconf/pkgconf-1.8.0.tar.xz
+        sha256: ef9c7e61822b7cb8356e6e9e1dca58d9556f3200d78acab35e4347e9d4c2bbaf
+        size: 296304
+        artifact-name: pkgconf.tar.zst
+        strip-components: 1
+        add-prefix: pkgconf/
+
+afl-plus-plus-4.0:
+    description: AFL++ 4.0x source
+    fetch:
+        type: git
+        repo: https://github.com/AFLplusplus/AFLplusplus
+        revision: 0d164e4c1811c4d05f940f78e90fc56b661fb3b4
+
+cargo-vet:
+    description: cargo-vet source
+    fetch:
+        type: git
+        repo: https://github.com/mozilla/cargo-vet
+        revision: 5bd670061a22074eb5ee9d69feccc5900df00ec3
+
+symbol-scrapers:
+    description: Linux distribution symbol scraper source
+    fetch:
+        type: git
+        repo: https://github.com/mozilla/symbol-scrapers
+        revision: 95ea2e4c5f82469cb394620c8d332e3457466e45
+
+xz-5.4.4:
+    description: xz 5.4.4 source code
+    fetch:
+        type: static-url
+        url: https://tukaani.org/xz/xz-5.4.4.tar.gz
+        sha256: aae39544e254cfd27e942d35a048d592959bd7a79f9a624afb0498bb5613bdf8
+        size: 2874706
+        artifact-name: xz-source.tar.zst
+        strip-components: 1
+        add-prefix: xz-source/
+
+cpython-3.8.10:
+    description: cpython 3.8.10 source code
+    fetch:
+        type: static-url
+        url: https://www.python.org/ftp/python/3.8.10/Python-3.8.10.tgz
+        sha256: b37ac74d2cbad2590e7cd0dd2b3826c29afe89a734090a87bf8c03c45066cb65
+        size: 24720640
+        artifact-name: cpython-source.tar.zst
+        strip-components: 1
+        add-prefix: cpython-source/
+
+cpython-3.8.10.exe:
+    description: cpython 3.8.10 installer
+    fetch:
+        type: static-url
+        url: https://www.python.org/ftp/python/3.8.10/python-3.8.10-amd64.exe
+        sha256: 7628244cb53408b50639d2c1287c659f4e29d3dfdb9084b11aed5870c0c6a48a
+        size: 28296784
+        artifact-name: python-3.8.10-amd64.exe
+
+cpython-3.11.7:
+    description: cpython 3.11.7 source code
+    fetch:
+        type: static-url
+        url: https://www.python.org/ftp/python/3.11.7/Python-3.11.7.tgz
+        sha256: 068c05f82262e57641bd93458dfa883128858f5f4997aad7a36fd25b13b29209
+        size: 26601929
+        artifact-name: cpython-source.tar.zst
+        strip-components: 1
+        add-prefix: cpython-source/
+
+cpython-3.11.7.exe:
+    description: cpython 3.11.7 installer
+    fetch:
+        type: static-url
+        url: https://www.python.org/ftp/python/3.11.7/python-3.11.7-amd64.exe
+        sha256: c117c6444494bbe4cc937e8a5a61899d53f7f5c5bc573c5d130304e457d54024
+        size: 26009544
+        artifact-name: python-3.11.7-amd64.exe
+
+windows-rs:
+    description: Source of the windows rust crate
+    fetch:
+        type: static-url
+        url: https://crates.io/api/v1/crates/windows/0.52.0/download
+        sha256: e48a53791691ab099e5e2ad123536d0fff50652600abaf43bbf952894110d0be
+        size: 11843715
+        artifact-name: windows-rs.tar.zst
+        strip-components: 1
+        add-prefix: windows-rs/
diff --git a/taskcluster/ci/fetch/updatebot.yml b/taskcluster/ci/fetch/updatebot.yml
new file mode 100644
index 0000000000..b757a383f8
--- /dev/null
+++ b/taskcluster/ci/fetch/updatebot.yml
@@ -0,0 +1,33 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+cloud-sql-proxy-1.25.0:
+    description: Windows executable for Google's Cloud SQL Proxy
+    fetch:
+        type: static-url
+        url: https://storage.googleapis.com/cloudsql-proxy/v1.25.0/cloud_sql_proxy_x64.exe
+        sha256: b922a8d3924499b829bfe53a25382f9b340ea804a738e2a7d8b34957a329a2dd
+        size: 16195072
+        artifact-name: cloud_sql_proxy.exe
+php-windows-7.4.24:
+    description: VC15 x64 Non Thread Safe (2021-Sep-21 16:58:34)
+    fetch:
+        type: static-url
+        url: https://windows.php.net/downloads/releases/archives/php-7.4.24-nts-Win32-vc15-x64.zip
+        sha256: 1e93fb390ab2761a47d27c97225a518759731c632c0dd87436cbf25f19582436
+        size: 26067094
+        artifact-name: php.tar.zst
+        add-prefix: php-win/
+arcanist:
+    description: checkout of arcanist for running on Windows
+    fetch:
+        type: git
+        repo: https://github.com/phacility/arcanist
+        revision: a028291f8e5e79b6446ad67ed8b0be9c5ec8f029
+depot_tools:
+    description: Google's depot_tools package
+    fetch:
+        type: git
+        repo: https://chromium.googlesource.com/chromium/tools/depot_tools.git
+        revision: 7b3351443198f4e7d068999b169385b55a43679a
diff --git a/taskcluster/ci/fuzzing/kind.yml b/taskcluster/ci/fuzzing/kind.yml
new file mode 100644
index 0000000000..68e212bb9c
--- /dev/null
+++ b/taskcluster/ci/fuzzing/kind.yml
@@ -0,0 +1,69 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.source_test:transforms
+    - taskgraph.transforms.task_context
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - fetch
+    - toolchain
+    - build
+
+job-defaults:
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 3600
+        docker-image: {in-tree: debian12-amd64-build}
+    use-system-python: false
+    treeherder:
+        kind: test
+        tier: 3
+    task-context:
+        from-object: {}
+        substitution-fields: []
+    if-dependencies: [build]
+
+jobs:
+    simple:
+        platform: linux64/opt
+        require-build:
+            linux64/opt: build-linux64/opt
+        description: Simple Fuzzing Test
+        treeherder:
+            symbol: simple-fuzzing
+        fetches:
+            build:
+                - target.jsshell.zip
+                - target.fuzztest.tests.tar.gz
+        worker:
+            env:
+                LD_LIBRARY_PATH: /builds/worker/fetches
+                JSSHELL: ./js
+        run:
+            using: run-task
+            command: >-
+                cd $MOZ_FETCHES_DIR &&
+                python3 tools/fuzzing/smoke/smoke.py
+
+    python:
+        platform: linux64-asan-fuzzing/opt
+        require-build:
+            linux64-asan-fuzzing/opt: build-linux64-asan-fuzzing/opt
+        description: Python Fuzzing Smoke Tests
+        treeherder:
+            symbol: fuzzing-python
+        fetches:
+            build:
+                - target.tar.bz2
+        run:
+            using: run-task
+            cwd: '{checkout}'
+            command: >
+                export GECKO_BINARY_PATH=$MOZ_FETCHES_DIR/firefox/firefox &&
+                ./mach python-test --subsuite fuzzing
diff --git a/taskcluster/ci/fxrecord/kind.yml b/taskcluster/ci/fxrecord/kind.yml
new file mode 100644
index 0000000000..7ff7816e7e
--- /dev/null
+++ b/taskcluster/ci/fxrecord/kind.yml
@@ -0,0 +1,46 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - build
+
+only-for-build-platforms:
+    - win64-shippable/opt
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.fxrecord
+    - gecko_taskgraph.transforms.release_notifications
+    - gecko_taskgraph.transforms.task
+
+jobs:
+    fxrecord:
+        name: notify-fxrecord-failure
+        description: "Desktop Startup Visual Metrics"
+        from-deps:
+            group-by: single-with-filters
+        run-on-projects:
+            - "mozilla-central"
+        worker-type: performance-hardware/gecko-t-fxrecorder
+        worker:
+            implementation: generic-worker
+            max-run-time: 1800
+            os: windows
+            command: ["C:\\fxrecorder\\fxrecorder.exe --config C:\\fxrecorder\\fxrecord.toml record"]
+        treeherder:
+            symbol: fxrec(1st)
+            tier: 2
+            kind: other
+        notifications:
+            status-types:
+                - "on-failed"
+                - "on-exception"
+            subject: fxrecord run failed
+            message: fxrecord run failed
+            emails:
+                - "barret@mozilla.com"
+                - "perftest-alerts@mozilla.com"
diff --git a/taskcluster/ci/geckodriver-mac-notarization/kind.yml b/taskcluster/ci/geckodriver-mac-notarization/kind.yml
new file mode 100644
index 0000000000..a90e6faa2e
--- /dev/null
+++ b/taskcluster/ci/geckodriver-mac-notarization/kind.yml
@@ -0,0 +1,37 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.mac_notarization
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.geckodriver_mac_notarization
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - geckodriver-signing
+
+only-for-build-platforms:
+    - macosx64-geckodriver/opt
+    - macosx64-aarch64-geckodriver/opt
+
+jobs:
+    geckodriver-mac-notarization:
+        from-deps:
+            group-by: single-with-filters
+        worker-type: linux-signing
+        treeherder:
+            symbol: TM(gd-n)
+        worker:
+            implementation: scriptworker-signing
+            max-run-time: 3600
+            upstream-artifacts:
+                - taskType: signing
+                  paths:
+                      - public/build/geckodriver.tar.gz
+                  formats: ["apple_notarization_geckodriver"]
+                  taskId:
+                      task-reference: <geckodriver-signing>
diff --git a/taskcluster/ci/geckodriver-signing/kind.yml b/taskcluster/ci/geckodriver-signing/kind.yml
new file mode 100644
index 0000000000..08007495e5
--- /dev/null
+++ b/taskcluster/ci/geckodriver-signing/kind.yml
@@ -0,0 +1,20 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.geckodriver_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - toolchain
+
+jobs:
+    geckodriver-signing:
+        from-deps:
+            with-attributes:
+                geckodriver: [true]
diff --git a/taskcluster/ci/generate-profile/kind.yml b/taskcluster/ci/generate-profile/kind.yml
new file mode 100644
index 0000000000..839c5aa7fe
--- /dev/null
+++ b/taskcluster/ci/generate-profile/kind.yml
@@ -0,0 +1,324 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+    - instrumented-build
+
+transforms:
+    - gecko_taskgraph.transforms.build_attrs:transforms
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.run_pgo_profile:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+
+job-defaults:
+    treeherder:
+        symbol: Bpgo(run)
+        kind: build
+        tier: 1
+    run-on-projects: ['release']
+    use-system-python: false
+
+jobs:
+    linux-shippable/opt:
+        description: "Linux Profile Generation"
+        shipping-phase: build
+        shipping-product: firefox
+        index:
+            product: firefox
+            job-name: linux-profile
+        treeherder:
+            platform: linux32-shippable/opt
+        worker-type: b-linux-gcp
+        worker:
+            chain-of-trust: true
+            env:
+                NEED_XVFB: "true"
+            max-run-time: 1200
+            docker-image: {in-tree: ubuntu1804-test}
+            artifacts:
+                - type: directory
+                  name: public/build
+                  path: /builds/worker/artifacts/
+        run:
+            using: run-task
+            cwd: '{checkout}'
+            command: >
+                ./taskcluster/scripts/misc/run-profileserver.sh
+        run-on-projects: ['release']
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-minidump-stackwalk
+
+    linux64-shippable/opt:
+        description: "Linux64 Profile Generation"
+        shipping-phase: build
+        shipping-product: firefox
+        index:
+            product: firefox
+            job-name: linux64-profile
+        treeherder:
+            platform: linux64-shippable/opt
+        worker-type: b-linux-gcp
+        worker:
+            chain-of-trust: true
+            env:
+                NEED_XVFB: "true"
+            max-run-time: 1200
+            docker-image: {in-tree: ubuntu1804-test}
+            artifacts:
+                - type: directory
+                  name: public/build
+                  path: /builds/worker/artifacts/
+        run:
+            using: run-task
+            cwd: '{checkout}'
+            command: >
+                ./taskcluster/scripts/misc/run-profileserver.sh
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-minidump-stackwalk
+
+    android-x86-shippable/opt:
+        description: "Android 5.0 x86 Profile Generation"
+        shipping-phase: build
+        shipping-product: fennec
+        index:
+            product: mobile
+            job-name: android-x86-profile
+        treeherder:
+            platform: android-5-0-x86/pgo
+        worker-type: t-linux-xlarge-pgo
+        worker:
+            chain-of-trust: true
+            max-run-time: 2700
+            docker-image: {in-tree: ubuntu1804-test}
+            env:
+                WORKING_DIR: "/builds/worker"
+                MOZHARNESS_PATH: "/builds/worker/checkouts/gecko/testing/mozharness"
+                PYTHON: "/builds/worker/checkouts/gecko/mach python"
+            artifacts:
+                - type: directory
+                  name: public/build
+                  path: /builds/worker/artifacts/
+        run:
+            using: mozharness
+            job-script: taskcluster/scripts/tester/test-linux.sh
+            script: android_emulator_pgo.py
+            tooltool-downloads: internal
+            options: [installer-path=/builds/worker/fetches/geckoview-test_runner.apk]
+            config:
+                - android/android_common.py
+                - android/android-x86_64-profile-generation.py
+                - android/android_pgo.py
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-minidump-stackwalk
+                - android-sdk-linux
+                - android-system-image-x86_64-linux
+                - android-avd-x86_64-linux
+
+    android-x86_64-shippable/opt:
+        description: "Android 5.0 x86_64 Profile Generation"
+        shipping-phase: build
+        shipping-product: fennec
+        index:
+            product: mobile
+            job-name: android-x86_64-profile
+        treeherder:
+            platform: android-5-0-x86_64/pgo
+        worker-type: t-linux-xlarge-pgo
+        worker:
+            chain-of-trust: true
+            max-run-time: 2700
+            docker-image: {in-tree: ubuntu1804-test}
+            env:
+                WORKING_DIR: "/builds/worker"
+                MOZHARNESS_PATH: "/builds/worker/checkouts/gecko/testing/mozharness"
+                PYTHON: "/builds/worker/checkouts/gecko/mach python"
+            artifacts:
+                - type: directory
+                  name: public/build
+                  path: /builds/worker/artifacts/
+        run:
+            using: mozharness
+            job-script: taskcluster/scripts/tester/test-linux.sh
+            script: android_emulator_pgo.py
+            tooltool-downloads: internal
+            options: [installer-path=/builds/worker/fetches/geckoview-test_runner.apk]
+            config:
+                - android/android_common.py
+                - android/android-x86_64-profile-generation.py
+                - android/android_pgo.py
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-minidump-stackwalk
+                - android-sdk-linux
+                - android-system-image-x86_64-linux
+                - android-avd-x86_64-linux
+
+    android-aarch64-shippable/opt:
+        description: "Android 5.0 Aarch64 Profile Generation"
+        shipping-phase: build
+        shipping-product: fennec
+        index:
+            product: mobile
+            job-name: android-aarch64-profile
+        treeherder:
+            platform: android-5-0-aarch64/pgo
+        worker-type: b-linux-kvm-gcp
+        worker:
+            chain-of-trust: true
+            max-run-time: 2700
+            kvm: true  # for access to /dev/kvm for hw accel in the emulator
+            docker-image: {in-tree: ubuntu1804-test}
+            env:
+                WORKING_DIR: "/builds/worker"
+                MOZHARNESS_PATH: "/builds/worker/checkouts/gecko/testing/mozharness"
+                PYTHON: "/builds/worker/checkouts/gecko/mach python"
+            artifacts:
+                - type: directory
+                  name: public/build
+                  path: /builds/worker/artifacts/
+        run:
+            using: mozharness
+            job-script: taskcluster/scripts/tester/test-linux.sh
+            script: android_emulator_pgo.py
+            tooltool-downloads: internal
+            options: [installer-path=/builds/worker/fetches/geckoview-test_runner.apk]
+            config:
+                - android/android_common.py
+                - android/android-aarch64-profile-generation.py
+                - android/android_pgo.py
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-minidump-stackwalk
+                - android-sdk-linux
+                - android31-system-image-x86_64-linux
+                - android31-avd-x86_64-linux
+
+    win32-shippable/opt:
+        description: "Win32 Profile Generation"
+        shipping-phase: build
+        shipping-product: firefox
+        index:
+            product: firefox
+            job-name: win32-profile
+        treeherder:
+            platform: windows2012-32-shippable/opt
+        worker-type: b-win2022
+        worker:
+            chain-of-trust: true
+            max-run-time: 2400
+            env:
+                UPLOAD_PATH: "artifacts"
+            artifacts:
+                - type: directory
+                  name: public/build
+                  path: build/src/artifacts/
+        run:
+            using: run-task
+            sparse-profile: profile-generate
+            cwd: '{checkout}'
+            command: ./taskcluster/scripts/misc/run-profileserver.sh
+        fetches:
+            toolchain:
+                - win64-clang-toolchain
+                - win32-minidump-stackwalk
+
+    win64-shippable/opt:
+        description: "Win64 Profile Generation"
+        shipping-phase: build
+        shipping-product: firefox
+        index:
+            product: firefox
+            job-name: win64-profile
+        treeherder:
+            platform: windows2012-64-shippable/opt
+        worker-type: b-win2022
+        worker:
+            chain-of-trust: true
+            max-run-time: 2400
+            env:
+                UPLOAD_PATH: "artifacts"
+            artifacts:
+                - type: directory
+                  name: public/build
+                  path: build/src/artifacts/
+        run:
+            using: run-task
+            sparse-profile: profile-generate
+            cwd: '{checkout}'
+            command: ./taskcluster/scripts/misc/run-profileserver.sh
+        fetches:
+            toolchain:
+                - win64-clang-toolchain
+                - win32-minidump-stackwalk
+
+    macosx64-shippable/opt:
+        description: "macosx64 Profile Generation"
+        shipping-phase: build
+        shipping-product: firefox
+        index:
+            product: firefox
+            job-name: macosx64-profile
+        treeherder:
+            platform: macosx1015-64-shippable/opt
+        worker-type: b-osx-1015
+        worker:
+            chain-of-trust: true
+            max-run-time: 7200
+            env:
+                SHELL: "/bin/bash"
+            artifacts:
+                - type: directory
+                  name: public/build
+                  path: artifacts/
+        run:
+            using: run-task
+            sparse-profile: profile-generate
+            cwd: '{checkout}'
+            command: ./taskcluster/scripts/misc/run-profileserver-macos.sh
+        fetches:
+            toolchain:
+                - macosx64-clang
+                - macosx64-minidump-stackwalk
+
+    macosx64-aarch64-shippable/opt:
+        description: "macosx64 aarch64 Profile Generation"
+        shipping-phase: build
+        shipping-product: firefox
+        index:
+            product: firefox
+            job-name: macosx64-aarch64-profile
+        treeherder:
+            platform: macosx1100-64-shippable/opt
+        worker-type: b-osx-arm64
+        worker:
+            chain-of-trust: true
+            max-run-time: 7200
+            env:
+                SHELL: "/bin/bash"
+            artifacts:
+                - type: directory
+                  name: public/build
+                  path: artifacts/
+        run:
+            using: run-task
+            sparse-profile: profile-generate
+            cwd: '{checkout}'
+            command: ./taskcluster/scripts/misc/run-profileserver-macos.sh
+        fetches:
+            toolchain:
+                - macosx64-clang
+                - macosx64-minidump-stackwalk
diff --git a/taskcluster/ci/github-sync/kind.yml b/taskcluster/ci/github-sync/kind.yml
new file mode 100644
index 0000000000..7c0b8136c4
--- /dev/null
+++ b/taskcluster/ci/github-sync/kind.yml
@@ -0,0 +1,53 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+    - build
+
+transforms:
+    - gecko_taskgraph.transforms.github_sync:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    attributes:
+        retrigger: true
+    run-on-projects: ['mozilla-central-only']
+    worker-type: b-linux-gcp
+    treeherder:
+        platform: other/opt
+        tier: 2
+        kind: other
+    worker:
+        max-run-time: 3600
+        docker-image: {in-tree: github-sync}
+    run:
+        sparse-profile: github-sync
+        using: run-task
+
+jobs:
+    webrender:
+        description: Sync webrender to github mirror
+        secret: gecko/gfx-github-sync/token
+        run:
+            command: '$GECKO_PATH/tools/github-sync/sync-to-github.sh webrender gfx/wr servo/webrender @bors-servo'
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+        treeherder:
+            symbol: GhS(wr)
+
+    qcms:
+        description: Sync qcms to github mirror
+        secret: gecko/gfx-github-sync/token
+        run:
+            command: '$GECKO_PATH/tools/github-sync/sync-to-github.sh qcms gfx/qcms FirefoxGraphics/qcms @jrmuizel'
+        when:
+            files-changed:
+                - 'gfx/qcms/**'
+        treeherder:
+            symbol: GhS(qcms)
diff --git a/taskcluster/ci/hazard/kind.yml b/taskcluster/ci/hazard/kind.yml
new file mode 100644
index 0000000000..569141e8c8
--- /dev/null
+++ b/taskcluster/ci/hazard/kind.yml
@@ -0,0 +1,83 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.build_attrs:transforms
+    - gecko_taskgraph.transforms.build_lints:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    attributes:
+        retrigger: true
+    treeherder:
+        kind: build
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 10800
+        docker-image: {in-tree: debian12-amd64-build}
+    use-system-python: false
+
+jobs:
+    linux64-shell-haz/debug:
+        description: "JS Shell Hazard Analysis Linux"
+        index:
+            product: firefox
+            job-name: shell-haz-debug
+        treeherder:
+            platform: linux64/debug
+            symbol: SM(H)
+        run:
+            using: hazard
+            command: >
+                cd /builds/worker/checkouts/gecko/taskcluster/scripts/builder
+                && ./build-haz-linux.sh --project js $HOME/workspace
+        when:
+            files-changed:
+                - js/public/**
+                - js/src/**
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-gcc-9
+                - linux64-gcc-sixgill
+                - linux64-rust
+                - linux64-cbindgen
+                - linux64-node
+                - linux64-pkgconf
+                - sysroot-x86_64-linux-gnu
+
+    linux64-haz/debug:
+        description: "Browser Hazard Analysis Linux"
+        index:
+            product: firefox
+            job-name: browser-haz-debug
+        treeherder:
+            platform: linux64/debug
+            symbol: H
+        run:
+            using: hazard
+            command: >
+                cd /builds/worker/checkouts/gecko/taskcluster/scripts/builder
+                && ./build-haz-linux.sh --project browser $HOME/workspace
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-gcc-9
+                - linux64-gcc-sixgill
+                - linux64-rust
+                - linux64-cbindgen
+                - linux64-nasm
+                - linux64-node
+                - linux64-pkgconf
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+        optimization:
+            skip-unless-backstop: null
diff --git a/taskcluster/ci/instrumented-build/kind.yml b/taskcluster/ci/instrumented-build/kind.yml
new file mode 100644
index 0000000000..0350bc51af
--- /dev/null
+++ b/taskcluster/ci/instrumented-build/kind.yml
@@ -0,0 +1,409 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+    - fetch
+
+transforms:
+    - gecko_taskgraph.transforms.build:transforms
+    - gecko_taskgraph.transforms.build_attrs:transforms
+    - gecko_taskgraph.transforms.build_lints:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.artifact:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    shipping-phase: build
+    treeherder:
+        symbol: Bpgo(instr)
+        tier: 1
+    worker:
+        max-run-time: 7200
+        env:
+            PERFHERDER_EXTRA_OPTIONS: instrumented
+            MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE: system
+    use-system-python: false
+    run:
+        using: mozharness
+        actions: [get-secrets, build]
+        script: mozharness/scripts/fx_desktop_build.py
+        secrets: true
+    use-sccache:
+        by-release-level:
+            production: false
+            staging: true
+    fetches:
+        toolchain:
+            - linux64-sccache
+    run-on-projects: ['release']
+
+jobs:
+    linux-shippable/opt:
+        description: "Linux Instrumented"
+        index:
+            product: firefox
+            job-name: instrumented-linux
+        shipping-product: firefox
+        treeherder:
+            platform: linux32-shippable/opt
+        worker-type: b-linux-gcp
+        run:
+            config:
+                - builds/releng_base_firefox.py
+                - builds/releng_base_linux_32_builds.py
+            mozconfig-variant: profile-generate
+            tooltool-downloads: public
+        run-on-projects: ['release']
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-rust
+                - linux64-rust-size
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-nasm
+                - linux64-node
+                - linux64-pkgconf
+                - sysroot-i686-linux-gnu
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+
+    linux64-shippable/opt:
+        description: "Linux64 Instrumented"
+        index:
+            product: firefox
+            job-name: instrumented-linux64
+        shipping-product: firefox
+        treeherder:
+            platform: linux64-shippable/opt
+        worker-type: b-linux-gcp
+        run:
+            config:
+                - builds/releng_base_firefox.py
+                - builds/releng_base_linux_64_builds.py
+            mozconfig-variant: profile-generate
+            tooltool-downloads: public
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-rust
+                - linux64-rust-size
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-nasm
+                - linux64-node
+                - linux64-pkgconf
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+
+    macosx64-shippable/opt:
+        description: "MacOS X x64 Cross-compile Instrumented"
+        shipping-phase: build
+        shipping-product: firefox
+        treeherder:
+            platform: osx-shippable/opt
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 7200
+            env:
+                PERFHERDER_EXTRA_OPTIONS: instrumented
+        run:
+            using: mozharness
+            actions: [get-secrets, build]
+            config:
+                - builds/releng_base_firefox.py
+                - builds/releng_base_mac_64_cross_builds.py
+            script: "mozharness/scripts/fx_desktop_build.py"
+            secrets: true
+            mozconfig-variant: profile-generate
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-hfsplus
+                - linux64-libdmg
+                - linux64-rust-macos
+                - linux64-rust-size
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-nasm
+                - linux64-node
+                - macosx64-sdk
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+
+    macosx64-aarch64-shippable/opt:
+        description: "MacOS X aarch64 Cross-compile Instrumented"
+        shipping-phase: build
+        shipping-product: firefox
+        treeherder:
+            platform: osx-aarch64-shippable/opt
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 7200
+            env:
+                PERFHERDER_EXTRA_OPTIONS: instrumented
+        run:
+            using: mozharness
+            actions: [get-secrets, build]
+            config:
+                - builds/releng_base_firefox.py
+                - builds/releng_base_mac_64_cross_builds.py
+            script: "mozharness/scripts/fx_desktop_build.py"
+            secrets: true
+            mozconfig-variant: profile-generate
+            extra-config:
+                mozconfig_platform: macosx64-aarch64
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-hfsplus
+                - linux64-libdmg
+                - linux64-rust-macos
+                - linux64-rust-size
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-nasm
+                - linux64-node
+                - macosx64-sdk
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+
+    android-x86-shippable/opt:
+        description: "Android 5.0 x86 PGO instrumented"
+        index:
+            product: mobile
+            job-name: instrumented-android-x86
+        shipping-product: fennec
+        treeherder:
+            platform: android-5-0-x86/pgo
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: android-build}
+            env:
+                GRADLE_USER_HOME: "/builds/worker/checkouts/gecko/mobile/android/gradle/dotgradle-offline"
+                TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            artifacts:
+                - name: public/build
+                  path: /builds/worker/artifacts/
+                  type: directory
+                - name: public/build/geckoview-androidTest.apk
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview/outputs/apk/androidTest/withGeckoBinaries/debug/geckoview-withGeckoBinaries-debug-androidTest.apk
+                  type: file
+                - name: public/build/geckoview-test_runner.apk
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/test_runner/outputs/apk/withGeckoBinaries/debug/test_runner-withGeckoBinaries-debug.apk
+                  type: file
+                - name: public/build/geckoview-test_runner.aab
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/test_runner/outputs/bundle/withGeckoBinariesDebug/test_runner-withGeckoBinaries-debug.aab
+                  type: file
+                - name: public/build/geckoview_example.apk
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview_example/outputs/apk/withGeckoBinaries/debug/geckoview_example-withGeckoBinaries-debug.apk
+                  type: file
+                - name: public/build/geckoview_example.aab
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview_example/outputs/bundle/withGeckoBinariesDebug/geckoview_example-withGeckoBinaries-debug.aab
+                  type: file
+        run:
+            config:
+                - builds/releng_base_android_64_builds.py
+            custom-build-variant-cfg: x86-profile-generate
+            tooltool-downloads: internal
+        fetches:
+            toolchain:
+                - android-gradle-dependencies
+                - android-ndk-linux
+                - android-sdk-linux
+                - linux64-jdk
+                - linux64-clang
+                - linux64-rust-android
+                - linux64-rust-size
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-nasm
+                - linux64-node
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+
+    android-x86_64-shippable/opt:
+        description: "Android 5.0 x86_64 PGO instrumented"
+        index:
+            product: mobile
+            job-name: instrumented-android-x86_64
+        shipping-product: fennec
+        treeherder:
+            platform: android-5-0-x86_64/pgo
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: android-build}
+            env:
+                GRADLE_USER_HOME: "/builds/worker/checkouts/gecko/mobile/android/gradle/dotgradle-offline"
+                TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            artifacts:
+                - name: public/build
+                  path: /builds/worker/artifacts/
+                  type: directory
+                - name: public/build/geckoview-androidTest.apk
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview/outputs/apk/androidTest/withGeckoBinaries/debug/geckoview-withGeckoBinaries-debug-androidTest.apk
+                  type: file
+                - name: public/build/geckoview-test_runner.apk
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/test_runner/outputs/apk/withGeckoBinaries/debug/test_runner-withGeckoBinaries-debug.apk
+                  type: file
+                - name: public/build/geckoview-test_runner.aab
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/test_runner/outputs/bundle/withGeckoBinariesDebug/test_runner-withGeckoBinaries-debug.aab
+                  type: file
+                - name: public/build/geckoview_example.apk
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview_example/outputs/apk/withGeckoBinaries/debug/geckoview_example-withGeckoBinaries-debug.apk
+                  type: file
+                - name: public/build/geckoview_example.aab
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview_example/outputs/bundle/withGeckoBinariesDebug/geckoview_example-withGeckoBinaries-debug.aab
+                  type: file
+        run:
+            config:
+                - builds/releng_base_android_64_builds.py
+            custom-build-variant-cfg: x86_64-profile-generate
+            tooltool-downloads: internal
+        fetches:
+            toolchain:
+                - android-gradle-dependencies
+                - android-ndk-linux
+                - android-sdk-linux
+                - linux64-jdk
+                - linux64-clang
+                - linux64-rust-android
+                - linux64-rust-size
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-nasm
+                - linux64-node
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+
+    android-aarch64-shippable/opt:
+        description: "Android 5.0 AArch64 PGO instrumented"
+        index:
+            product: mobile
+            job-name: instrumented-android-aarch64
+        shipping-product: fennec
+        treeherder:
+            platform: android-5-0-aarch64/pgo
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: android-build}
+            env:
+                GRADLE_USER_HOME: "/builds/worker/checkouts/gecko/mobile/android/gradle/dotgradle-offline"
+                TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+            artifacts:
+                - name: public/build
+                  path: /builds/worker/artifacts/
+                  type: directory
+                - name: public/build/geckoview-androidTest.apk
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview/outputs/apk/androidTest/withGeckoBinaries/debug/geckoview-withGeckoBinaries-debug-androidTest.apk
+                  type: file
+                - name: public/build/geckoview-test_runner.apk
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/test_runner/outputs/apk/withGeckoBinaries/debug/test_runner-withGeckoBinaries-debug.apk
+                  type: file
+                - name: public/build/geckoview-test_runner.aab
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/test_runner/outputs/bundle/withGeckoBinariesDebug/test_runner-withGeckoBinaries-debug.aab
+                  type: file
+                - name: public/build/geckoview_example.apk
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview_example/outputs/apk/withGeckoBinaries/debug/geckoview_example-withGeckoBinaries-debug.apk
+                  type: file
+                - name: public/build/geckoview_example.aab
+                  path: /builds/worker/workspace/obj-build/gradle/build/mobile/android/geckoview_example/outputs/bundle/withGeckoBinariesDebug/geckoview_example-withGeckoBinaries-debug.aab
+                  type: file
+        run:
+            config:
+                - builds/releng_base_android_64_builds.py
+            custom-build-variant-cfg: aarch64-profile-generate
+            tooltool-downloads: internal
+        fetches:
+            toolchain:
+                - android-gradle-dependencies
+                - android-ndk-linux
+                - android-sdk-linux
+                - linux64-jdk
+                - linux64-clang
+                - linux64-rust-android
+                - linux64-rust-size
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-nasm
+                - linux64-node
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+
+    win32-shippable/opt:
+        description: "Win32 Shippable PGO Instrumented"
+        index:
+            product: firefox
+            job-name: instrumented-win32
+        shipping-product: firefox
+        treeherder:
+            platform: windows2012-32-shippable/opt
+        worker-type: b-linux-gcp
+        run:
+            options: [append-env-variables-from-configs]
+            mozconfig-variant: profile-generate
+            config:
+                - builds/releng_base_firefox.py
+                - builds/releng_base_linux_64_builds.py
+            extra-config:
+                stage_platform: win32
+                mozconfig_platform: win32
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-rust-cross
+                - linux64-rust-size
+                - linux64-nasm
+                - linux64-node
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-wine
+                - linux64-winchecksec
+                - nsis
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+                - vs
+                - windows-rs
+            fetch:
+                - upx-3.95-win
+
+    win64-shippable/opt:
+        description: "Win64 Shippable PGO Instrumented"
+        index:
+            product: firefox
+            job-name: instrumented-win64
+        shipping-product: firefox
+        treeherder:
+            platform: windows2012-64-shippable/opt
+        worker-type: b-linux-gcp
+        run:
+            options: [append-env-variables-from-configs]
+            mozconfig-variant: profile-generate
+            config:
+                - builds/releng_base_firefox.py
+                - builds/releng_base_linux_64_builds.py
+            extra-config:
+                stage_platform: win64
+                mozconfig_platform: win64
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-rust-cross
+                - linux64-rust-size
+                - linux64-nasm
+                - linux64-node
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-wine
+                - linux64-winchecksec
+                - nsis
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+                - vs
+                - windows-rs
+            fetch:
+                - upx-3.95-win
diff --git a/taskcluster/ci/l10n-bump/kind.yml b/taskcluster/ci/l10n-bump/kind.yml
new file mode 100644
index 0000000000..2dd21e4068
--- /dev/null
+++ b/taskcluster/ci/l10n-bump/kind.yml
@@ -0,0 +1,131 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_version_bump:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    worker-type: tree
+    worker:
+        implementation: treescript
+        tags: []
+        bump: false
+        dontbuild:
+            by-project:
+                mozilla-beta: false
+                default: true
+        ignore-closed-tree:
+            by-project:
+                autoland: true
+                default: false
+        push:
+            by-project:
+                mozilla-(central|beta): true
+                autoland: true
+                default: false
+        source-repo:
+            by-release-type:
+                beta: https://hg.mozilla.org/releases/mozilla-beta
+                nightly: https://hg.mozilla.org/mozilla-central
+                default: https://hg.mozilla.org/integration/autoland
+        l10n-bump-info:
+            by-release-type:
+                # XXX whenever the `beta` config changes, make sure to make
+                #     the corresponding change in merge-automation/kind.yml
+                beta:
+                    name: Firefox l10n changesets
+                    path: browser/locales/l10n-changesets.json
+                    version-path: browser/config/version.txt
+                    l10n-repo-url: "https://hg.mozilla.org/l10n-central/%(locale)s/json-pushes?version=2&tipsonly=1"
+                    ignore-config:
+                        ja:
+                            - macosx64
+                            - macosx64-devedition
+                        ja-JP-mac:
+                            - linux
+                            - linux-devedition
+                            - linux64
+                            - linux64-devedition
+                            - win32
+                            - win32-devedition
+                            - win64
+                            - win64-devedition
+                            - win64-aarch64
+                            - win64-aarch64-devedition
+                    platform-configs:
+                        [
+                            {
+                                "platforms":
+                                    [
+                                        "linux",
+                                        "linux-devedition",
+                                        "linux64",
+                                        "linux64-devedition",
+                                        "macosx64",
+                                        "macosx64-devedition",
+                                        "win32",
+                                        "win32-devedition",
+                                        "win64",
+                                        "win64-devedition",
+                                        "win64-aarch64",
+                                        "win64-aarch64-devedition",
+                                    ],
+                                "path": "browser/locales/shipped-locales",
+                            },
+                        ]
+                default:
+                    name: Firefox l10n changesets
+                    path: browser/locales/l10n-changesets.json
+                    l10n-repo-url: "https://hg.mozilla.org/l10n-central/%(locale)s/json-pushes?version=2&tipsonly=1"
+                    version-path: browser/config/version.txt
+                    ignore-config:
+                        ja:
+                            - macosx64
+                            - macosx64-devedition
+                        ja-JP-mac:
+                            - linux
+                            - linux-devedition
+                            - linux64
+                            - linux64-devedition
+                            - win32
+                            - win32-devedition
+                            - win64
+                            - win64-devedition
+                            - win64-aarch64
+                            - win64-aarch64-devedition
+                    platform-configs:
+                        [
+                            {
+                                "platforms":
+                                    [
+                                        "linux",
+                                        "linux-devedition",
+                                        "linux64",
+                                        "linux64-devedition",
+                                        "macosx64",
+                                        "macosx64-devedition",
+                                        "win32",
+                                        "win32-devedition",
+                                        "win64",
+                                        "win64-devedition",
+                                        "win64-aarch64",
+                                        "win64-aarch64-devedition",
+                                    ],
+                                "path": "browser/locales/all-locales",
+                            },
+                        ]
+
+jobs:
+    l10n-bumper:
+        name: l10n_bumper
+        description: l10n changesets bumper
+        run-on-projects: []
+        treeherder:
+            kind: build
+            platform: linux64/opt
+            symbol: l10n-bump(lb)
+            tier: 1
diff --git a/taskcluster/ci/l10n-cross-channel/kind.yml b/taskcluster/ci/l10n-cross-channel/kind.yml
new file mode 100644
index 0000000000..da30306599
--- /dev/null
+++ b/taskcluster/ci/l10n-cross-channel/kind.yml
@@ -0,0 +1,41 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.cross_channel:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+jobs:
+    quarantine:
+        description: Push strings from all shipping trains to the quarantine strings repo
+        run-on-projects: []
+        worker-type: b-linux-gcp
+        ssh-key-secret:
+            by-level:
+                "3": project/releng/gecko/build/level-3/l10n-cross-channel-quarantine-ssh
+                default: null
+        worker:
+            docker-image: {in-tree: push-to-try}
+            max-run-time: 3600
+            artifacts:
+                - type: directory
+                  name: public/build
+                  path: /builds/worker/artifacts
+            env:
+                TASK_ID: {"task-reference": "<self>"}
+                TASKCLUSTER_PROXY_URL: http://taskcluster
+        treeherder:
+            platform: firefox-release/opt
+            tier: 1
+            kind: build
+            symbol: Rel(l10n-cross-channel)
+        run:
+            using: mach
+            actions:
+                by-level:
+                    "3": ["prep", "create", "push", "clean"]
+                    default: ["prep", "create", "clean"]
diff --git a/taskcluster/ci/l10n/kind.yml b/taskcluster/ci/l10n/kind.yml
new file mode 100644
index 0000000000..d1effef2e6
--- /dev/null
+++ b/taskcluster/ci/l10n/kind.yml
@@ -0,0 +1,145 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.l10n
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - build
+    - build-signing
+    - fetch
+    - repackage
+    - toolchain
+
+only-for-build-platforms:
+    - linux64-shippable/opt
+    - linux-shippable/opt
+    - macosx64-shippable/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+
+jobs:
+    l10n:
+        description: Localization
+        from-deps:
+            group-by: platform
+        locales-file: browser/locales/l10n-onchange-changesets.json
+        ignore-locales:
+            by-build-platform:
+                # OSX has a special locale for japanese
+                macosx64.*: [ja]
+                default: [ja-JP-mac]
+        run-time:
+            by-build-platform:
+                default: 900
+                win.*: 1800
+        secrets: false
+        fetches:
+            toolchain:
+                by-build-platform:
+                    default: []
+                    macosx64.*:
+                        - linux64-libdmg
+                        - linux64-hfsplus
+                    win.*:
+                        - linux64-wine
+                        - nsis
+            fetch:
+                by-build-platform:
+                    default: []
+                    win.*:
+                        - upx-3.95-win
+        tooltool:
+            by-build-platform:
+                default: internal
+                linux.*: public
+        index:
+            type: l10n
+            product: firefox
+            job-name:
+                by-build-platform:
+                    linux(?!64).*: linux-opt
+                    linux64.*: linux64-opt
+                    macosx64.*: macosx64-opt
+                    win32.*: win32-opt
+                    win64.*: win64-opt
+        run-on-projects:
+            by-build-platform:
+                linux-shippable.*: ['release']  # Do not run on autoland - Bug 1599197
+                default: ['all']
+        worker-type: b-linux-gcp
+        treeherder:
+            symbol: L10n
+            tier: 1
+            platform:
+                by-build-platform:
+                    linux64: linux64/opt
+                    linux64-shippable: linux64-shippable/opt
+                    linux: linux32/opt
+                    linux-shippable: linux32-shippable/opt
+                    macosx64: osx-cross/opt
+                    macosx64-shippable: osx-shippable/opt
+                    win32: windows2012-32/opt
+                    win32-shippable: windows2012-32-shippable/opt
+                    win64: windows2012-64/opt
+                    win64-shippable: windows2012-64-shippable/opt
+        env:
+            by-build-platform:
+                linux.*:    # linux64 and 32 get same treatment here
+                    EN_US_PACKAGE_NAME: target.tar.bz2
+                    EN_US_BINARY_URL:
+                        artifact-reference: <build-signing/{artifact_prefix}>
+                macosx64.*:
+                    EN_US_PACKAGE_NAME: target.dmg
+                    EN_US_BINARY_URL:
+                        artifact-reference: <repackage/{artifact_prefix}>
+                win.*:
+                    EN_US_PACKAGE_NAME: target.zip
+                    EN_US_BINARY_URL:
+                        artifact-reference: <build-signing/{artifact_prefix}>
+        mozharness:
+            config:
+                by-build-platform:
+                    linux(?!64).*:
+                        - single_locale/firefox.py
+                        - single_locale/linux32.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_linux_common.py
+                    linux64.*:
+                        - single_locale/firefox.py
+                        - single_locale/linux64.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_linux_common.py
+                    macosx64.*:
+                        - single_locale/firefox.py
+                        - single_locale/macosx64.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_macosx64.py
+                    win32.*:
+                        - single_locale/firefox.py
+                        - single_locale/win32.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_win32.py
+                    win64.*:
+                        - single_locale/firefox.py
+                        - single_locale/win64.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_win64.py
+            # no default, so we fail on new entries
+            actions: ['clone-locales', 'list-locales', 'setup', 'repack', 'summary']
+            script: mozharness/scripts/desktop_l10n.py
+        when:
+            files-changed:
+                - browser/locales/l10n-onchange-changesets.json
+                - testing/mozharness/configs/single_locale/**
+                - testing/mozharness/mozharness/mozilla/l10n/locales.py
+                - testing/mozharness/scripts/desktop_l10n.py
+                - third_party/python/compare-locales/**
+                - toolkit/locales/**
+                - toolkit/mozapps/installer/**
diff --git a/taskcluster/ci/mar-signing-autograph-stage/kind.yml b/taskcluster/ci/mar-signing-autograph-stage/kind.yml
new file mode 100644
index 0000000000..711c28c44b
--- /dev/null
+++ b/taskcluster/ci/mar-signing-autograph-stage/kind.yml
@@ -0,0 +1,34 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.mar_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - repackage
+
+only-for-build-platforms:
+    - linux64-shippable/opt
+
+jobs:
+    mar-signing-autograph-stage:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: null
+        treeherder-group: ms-stage
+        treeherder:
+            tier: 3
+        description-suffix: 'autograph-stage mar signing test'
+        required_signoffs:
+            - mar-signing
+        run-on-projects: []
+        shippable: false
+        attributes:
+            retrigger: true
+        worker-type: linux-depsigning
diff --git a/taskcluster/ci/mar-signing-l10n/kind.yml b/taskcluster/ci/mar-signing-l10n/kind.yml
new file mode 100644
index 0000000000..ad470915ef
--- /dev/null
+++ b/taskcluster/ci/mar-signing-l10n/kind.yml
@@ -0,0 +1,39 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.mar_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - repackage-l10n
+
+only-for-build-platforms:
+    - linux-shippable/opt
+    - linux64-shippable/opt
+    - macosx64-shippable/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - win64-aarch64-shippable/opt
+    - linux64-asan-reporter-shippable/opt
+    - linux-devedition/opt
+    - linux64-devedition/opt
+    - macosx64-devedition/opt
+    - win32-devedition/opt
+    - win64-devedition/opt
+    - win64-aarch64-devedition/opt
+
+jobs:
+    mar-signing-l10n:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: promote
+        treeherder-group: ms
+        description-suffix: 'mar signing'
+        required_signoffs:
+            - mar-signing
diff --git a/taskcluster/ci/mar-signing/kind.yml b/taskcluster/ci/mar-signing/kind.yml
new file mode 100644
index 0000000000..f1337058d0
--- /dev/null
+++ b/taskcluster/ci/mar-signing/kind.yml
@@ -0,0 +1,40 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.mar_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - repackage
+
+only-for-build-platforms:
+    - linux-shippable/opt
+    - linux64-shippable/opt
+    - macosx64-shippable/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - win64-aarch64-shippable/opt
+    - linux-devedition/opt
+    - linux64-devedition/opt
+    - macosx64-devedition/opt
+    - win32-devedition/opt
+    - win64-devedition/opt
+    - win64-aarch64-devedition/opt
+    - linux64-asan-reporter-shippable/opt
+    - win64-asan-reporter-shippable/opt
+
+jobs:
+    mar-signing:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: promote
+        treeherder-group: ms
+        description-suffix: 'mar signing'
+        required_signoffs:
+            - mar-signing
diff --git a/taskcluster/ci/maybe-release/kind.yml b/taskcluster/ci/maybe-release/kind.yml
new file mode 100644
index 0000000000..8664e52168
--- /dev/null
+++ b/taskcluster/ci/maybe-release/kind.yml
@@ -0,0 +1,45 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.maybe_release:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    description: Check recent releases and trigger a new ship-it phase if worthwhile.
+    worker-type: shipit
+    worker:
+        implementation: shipit-maybe-release
+    scopes:
+        by-release-level:
+            production:
+                - project:releng:ship-it:server:production
+                - project:releng:ship-it:action:create-new-release
+            staging:
+                - project:releng:ship-it:server:staging
+                - project:releng:ship-it:action:create-new-release
+    run-on-projects: []
+    treeherder:
+        symbol: Rel(maybe-release)
+        tier: 1
+        kind: build
+
+jobs:
+    firefox:
+        name: maybe-release-firefox
+        shipping-product: firefox
+        worker:
+            phase: ship_firefox
+        treeherder:
+            platform: firefox-release/opt
+
+    devedition:
+        name: maybe-release-devedition
+        shipping-product: devedition
+        worker:
+            phase: ship_devedition
+        treeherder:
+            platform: devedition-release/opt
diff --git a/taskcluster/ci/merge-automation/kind.yml b/taskcluster/ci/merge-automation/kind.yml
new file mode 100644
index 0000000000..8e2b34147e
--- /dev/null
+++ b/taskcluster/ci/merge-automation/kind.yml
@@ -0,0 +1,72 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.merge_automation:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+
+jobs:
+    merge-automation:
+        name: merge-automation
+        label: merge-automation
+        treeherder:
+            symbol: Rel(merge-automation)
+            tier: 1
+            kind: build
+            platform: firefox-release/opt
+        description: Merge repositories for release management.
+        worker-type: tree
+        scopes: []
+        worker:
+            implementation: treescript
+            tags: []
+            bump: false
+            dontbuild: false
+            ignore-closed-tree: true
+            push: false
+            l10n-bump-info:
+                by-behavior:
+                    central-to-beta:
+                        name: Firefox l10n changesets
+                        path: browser/locales/l10n-changesets.json
+                        version-path: browser/config/version.txt
+                        l10n-repo-url: "https://hg.mozilla.org/l10n-central/%(locale)s/json-pushes?version=2&tipsonly=1"
+                        ignore-config:
+                            ja:
+                                - macosx64
+                                - macosx64-devedition
+                            ja-JP-mac:
+                                - linux
+                                - linux-devedition
+                                - linux64
+                                - linux64-devedition
+                                - win32
+                                - win32-devedition
+                                - win64
+                                - win64-devedition
+                                - win64-aarch64
+                                - win64-aarch64-devedition
+                        platform-configs: [{
+                            "platforms": [
+                                "linux",
+                                "linux-devedition",
+                                "linux64",
+                                "linux64-devedition",
+                                "macosx64",
+                                "macosx64-devedition",
+                                "win32",
+                                "win32-devedition",
+                                "win64",
+                                "win64-devedition",
+                                "win64-aarch64",
+                                "win64-aarch64-devedition",
+                            ],
+                            "path": "browser/locales/shipped-locales",
+                        }]
+                    default: null
+        run-on-projects: []
+        expiration-policy: long
diff --git a/taskcluster/ci/openh264-plugin/kind.yml b/taskcluster/ci/openh264-plugin/kind.yml
new file mode 100644
index 0000000000..993489e3f6
--- /dev/null
+++ b/taskcluster/ci/openh264-plugin/kind.yml
@@ -0,0 +1,226 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.openh264:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    description: "Build OpenH264 plugin"
+    treeherder:
+        kind: build
+        symbol: h264
+        tier: 2
+    run-on-projects: []
+    repo: 'https://github.com/cisco/openh264.git'
+    revision: '31c4d2e4a037526fd30d4e5c39f60885986cf865'
+    use-system-python: false
+    worker:
+        chain-of-trust: true
+
+jobs:
+    linux32/opt:
+        attributes:
+            build_platform: linux32
+            build_type: opt
+        treeherder:
+            platform: linux32/opt
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 1800
+            artifacts:
+                - name: private/openh264
+                  path: /builds/worker/workspace/openh264/artifacts
+                  type: directory
+        run:
+            using: mozharness
+            script: mozharness/scripts/openh264_build.py
+            config:
+                - openh264/linux32.py
+        fetches:
+            toolchain:
+                - linux64-binutils
+                - linux64-clang
+                - linux64-dump_syms
+                - linux64-nasm
+                - sysroot-i686-linux-gnu
+    linux64/opt:
+        attributes:
+            build_platform: linux64
+            build_type: opt
+        treeherder:
+            platform: linux64/opt
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 1800
+            artifacts:
+                - name: private/openh264
+                  path: /builds/worker/workspace/openh264/artifacts
+                  type: directory
+        run:
+            using: mozharness
+            script: mozharness/scripts/openh264_build.py
+            config:
+                - openh264/linux64.py
+        fetches:
+            toolchain:
+                - linux64-binutils
+                - linux64-clang
+                - linux64-dump_syms
+                - linux64-nasm
+                - sysroot-x86_64-linux-gnu
+    linux64-aarch64/opt:
+        attributes:
+            build_platform: linux64-aarch64
+            build_type: opt
+        treeherder:
+            platform: linux64-aarch64/opt
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 1800
+            artifacts:
+                - name: private/openh264
+                  path: /builds/worker/workspace/openh264/artifacts
+                  type: directory
+        run:
+            using: mozharness
+            script: mozharness/scripts/openh264_build.py
+            config:
+                - openh264/linux64-aarch64.py
+        fetches:
+            toolchain:
+                - linux64-binutils
+                - linux64-clang
+                - linux64-dump_syms
+                - sysroot-x86_64-linux-gnu
+                - sysroot-aarch64-linux-gnu
+    macosx64/opt:
+        attributes:
+            build_platform: macosx64
+            build_type: opt
+        treeherder:
+            platform: macosx64/opt
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 1800
+            artifacts:
+                - name: private/openh264
+                  path: /builds/worker/workspace/openh264/artifacts
+                  type: directory
+        run:
+            using: mozharness
+            script: mozharness/scripts/openh264_build.py
+            config:
+                - openh264/macosx64.py
+        fetches:
+            toolchain:
+                - linux64-cctools-port
+                - linux64-clang
+                - linux64-dump_syms
+                - linux64-nasm
+                - macosx64-sdk-13.3
+    macosx64-aarch64/opt:
+        attributes:
+            build_platform: macosx64-aarch64
+            build_type: opt
+        treeherder:
+            platform: macosx64-aarch64/opt
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 1800
+            artifacts:
+                - name: private/openh264
+                  path: /builds/worker/workspace/openh264/artifacts
+                  type: directory
+        run:
+            using: mozharness
+            script: mozharness/scripts/openh264_build.py
+            config:
+                - openh264/macosx64-aarch64.py
+        fetches:
+            toolchain:
+                - linux64-cctools-port
+                - linux64-clang
+                - linux64-dump_syms
+                - macosx64-sdk-13.3
+    win32/opt:
+        attributes:
+            build_platform: win32
+            build_type: opt
+        treeherder:
+            platform: win32/opt
+        worker-type: b-win2022
+        worker:
+            max-run-time: 1800
+            artifacts:
+                - name: private/openh264
+                  path: workspace/openh264/artifacts
+                  type: directory
+        run:
+            using: mozharness
+            script: mozharness/scripts/openh264_build.py
+            config:
+                - openh264/win32.py
+            tooltool-downloads: internal
+        fetches:
+            toolchain:
+                - win64-clang
+                - win64-dump_syms
+                - win64-mozmake
+                - win64-nasm
+    win64/opt:
+        attributes:
+            build_platform: win64
+            build_type: opt
+        treeherder:
+            platform: win64/opt
+        worker-type: b-win2022
+        worker:
+            max-run-time: 1800
+            artifacts:
+                - name: private/openh264
+                  path: workspace/openh264/artifacts
+                  type: directory
+        run:
+            using: mozharness
+            script: mozharness/scripts/openh264_build.py
+            config:
+                - openh264/win64.py
+            tooltool-downloads: internal
+        fetches:
+            toolchain:
+                - win64-clang
+                - win64-dump_syms
+                - win64-mozmake
+                - win64-nasm
+    win64-aarch64/opt:
+        attributes:
+            build_platform: win64-aarch64
+            build_type: opt
+        treeherder:
+            platform: win64-aarch64/opt
+        worker-type: b-win2022
+        worker:
+            max-run-time: 1800
+            artifacts:
+                - name: private/openh264
+                  path: workspace/openh264/artifacts
+                  type: directory
+        run:
+            using: mozharness
+            script: mozharness/scripts/openh264_build.py
+            config:
+                - openh264/win64-aarch64.py
+            tooltool-downloads: internal
+        fetches:
+            toolchain:
+                - win64-clang
+                - win64-dump_syms
+                - win64-mozmake
diff --git a/taskcluster/ci/openh264-signing/kind.yml b/taskcluster/ci/openh264-signing/kind.yml
new file mode 100644
index 0000000000..e4dc174cc7
--- /dev/null
+++ b/taskcluster/ci/openh264-signing/kind.yml
@@ -0,0 +1,19 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.openh264_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - openh264-plugin
+
+jobs:
+    openh264-signing:
+        from-deps:
+            group-by: single-with-filters
diff --git a/taskcluster/ci/packages/debian.yml b/taskcluster/ci/packages/debian.yml
new file mode 100644
index 0000000000..0a87ef6782
--- /dev/null
+++ b/taskcluster/ci/packages/debian.yml
@@ -0,0 +1,126 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    run:
+        using: debian-package
+        dist: jessie
+
+deb12-mercurial:
+    description: "Modern Mercurial for Debian bookworm"
+    treeherder:
+        symbol: Deb12(hg)
+    run:
+        using: debian-package
+        dist: bookworm
+        tarball:
+            url: https://www.mercurial-scm.org/release/mercurial-6.4.3.tar.gz
+            sha256: a77fb62d325934a83a00b2fc6db109f44c67b86768fc40490366f513640c7f64
+        pre-build-command: >-
+            cp -r contrib/packaging/debian debian &&
+            sed -i -e "s/__VERSION__/$(awk -F\" '$2 {print $2}' mercurial/__version__.py)-1.deb12moz1/" \
+                         -e "s/__DATE__/$(date --rfc-2822)/" \
+                         -e "s/__CODENAME__/bookworm/" debian/changelog
+
+deb12-valgrind:
+    description: "Valgrind for Debian bookworm"
+    treeherder:
+        symbol: Deb12(valgrind)
+    run:
+        dist: bookworm
+        dsc:
+            url: http://snapshot.debian.org/archive/debian/20230111T213757Z/pool/main/v/valgrind/valgrind_3.20.0-1.dsc
+            sha256: e32d373bf2d4f0bd0e9673c711d0e4a8eed43c22ca81714ae3e2d85b2f315493
+
+deb12-python-zstandard:
+    description: "python-zstandard for Debian bookworm"
+    treeherder:
+        symbol: Deb12(python-zstandard)
+    run:
+        using: debian-package
+        dist: bookworm
+        tarball:
+            url: https://github.com/indygreg/python-zstandard/releases/download/0.22.0/zstandard-0.22.0.tar.gz
+            sha256: 8226a33c542bcb54cd6bd0a366067b610b41713b64c9abec1bc4533d69f51e70
+        pre-build-command: debchange -v 0.22.0-1.deb12moz --distribution testing "Mozilla backport for bookworm"
+        name: python-zstandard
+
+deb8-gcc-8:
+    description: "gcc 8 for Debian jessie"
+    treeherder:
+        symbol: Deb8(gcc-8)
+    worker:
+        max-run-time: 3600
+        env:
+            DEB_BUILD_OPTIONS: nocheck
+            WITH_BOOTSTRAP: 'off'
+            WITHOUT_LANG: ada brig cilkrts fortran d go objc obj-c++ asan lsan tsan ubsan jit nvptx
+    run:
+        using: debian-package
+        dist: jessie
+        dsc:
+            url: http://snapshot.debian.org/archive/debian/20210202T150504Z/pool/main/g/gcc-8/gcc-8_8.4.0-7.dsc
+            sha256: b93f13bc67f5a8f16e837fbb543d00d3475d5c95777a1b0b5a448fa2310a98c5
+        # autoconf2.64 and quilt necessary to run the `debian/rules control` command to
+        # generate an updated debian/control.
+        # uncommenting `with_common_libs` makes the packaging create the libstdc++6 package.
+        # `libstdcxx_abi = new` overrides the default that disables the new ABI on jessie
+        # `BINUTILSBDV=2.25-3~` and `ISL_BUILD_DEP=libisl-dev,` override wrong versions
+        # in build dependencies for jessie.
+        # `OFFLOAD_BUILD_DEP=` overrides the dependency on nvptx, which is not available
+        # in jessie.
+        # `NT=` overrides the use of `:native` which is not supported by dpkg on jessie.
+        pre-build-command: >-
+            apt install autoconf2.64 quilt &&
+            sed -i 's/#with_common_libs/with_common_libs/' debian/rules.defs &&
+            echo libstdcxx_abi = new >> debian/rules.defs &&
+            echo BINUTILSBDV=2.25-3~ >> debian/rules.conf &&
+            echo ISL_BUILD_DEP=libisl-dev, >> debian/rules.conf &&
+            echo OFFLOAD_BUILD_DEP= >> debian/rules.conf &&
+            debian/rules control NT=
+
+deb8-32-gcc-8:
+    description: "gcc 8 for Debian jessie"
+    treeherder:
+        symbol: Deb8-32(gcc-8)
+    worker:
+        max-run-time: 3600
+        env:
+            DEB_BUILD_OPTIONS: nocheck
+            WITH_BOOTSTRAP: 'off'
+            WITHOUT_LANG: ada biarch brig cilkrts fortran d go objc obj-c++ asan lsan tsan ubsan jit nvptx
+    run:
+        using: debian-package
+        dist: jessie
+        dsc:
+            url: http://snapshot.debian.org/archive/debian/20210202T150504Z/pool/main/g/gcc-8/gcc-8_8.4.0-7.dsc
+            sha256: b93f13bc67f5a8f16e837fbb543d00d3475d5c95777a1b0b5a448fa2310a98c5
+        pre-build-command: >-
+            apt install autoconf2.64 quilt &&
+            sed -i 's/#with_common_libs/with_common_libs/' debian/rules.defs &&
+            echo libstdcxx_abi = new >> debian/rules.defs &&
+            echo GCC_MULTILIB_BUILD_DEP='$(DPKG_BUILD_DEP)' >> debian/rules.conf &&
+            echo BINUTILSBDV=2.25-3~ >> debian/rules.conf &&
+            echo ISL_BUILD_DEP=libisl-dev, >> debian/rules.conf &&
+            echo OFFLOAD_BUILD_DEP= >> debian/rules.conf &&
+            debian/rules control NT=
+        arch: i386
+
+deb8-gtk3:
+    description: "X11-only gtk+3 for Debian jessie"
+    treeherder:
+        symbol: Deb8(gtk)
+    worker:
+        max-run-time: 3600
+        env:
+            DEB_BUILD_OPTIONS: nocheck
+    run:
+        dist: jessie
+        dsc:
+            url: http://snapshot.debian.org/archive/debian/20150819T212910Z/pool/main/g/gtk+3.0/gtk+3.0_3.14.5-1+deb8u1.dsc
+            sha256: b1808b03317b171c813e31185a4520df4dbde54580842a72a4c44540cd6bde17
+        pre-build-command: >-
+            sed -i /linux-any/d debian/control* debian/libgtk-3-0.symbols &&
+            sed -i s/--enable-wayland-backend/--disable-wayland-backend/ debian/rules &&
+            debchange -v 3.14.5-1.deb8moz --distribution jessie-backports "Mozilla rebuild without wayland support"
diff --git a/taskcluster/ci/packages/kind.yml b/taskcluster/ci/packages/kind.yml
new file mode 100644
index 0000000000..5b21346de8
--- /dev/null
+++ b/taskcluster/ci/packages/kind.yml
@@ -0,0 +1,25 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.try_job:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.cached_tasks:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    treeherder:
+        kind: build
+        platform: packages/opt
+        tier: 1
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run-on-projects: []
+
+jobs-from:
+    - debian.yml
+    - ubuntu.yml
diff --git a/taskcluster/ci/packages/ubuntu.yml b/taskcluster/ci/packages/ubuntu.yml
new file mode 100644
index 0000000000..d9bbd5f2ad
--- /dev/null
+++ b/taskcluster/ci/packages/ubuntu.yml
@@ -0,0 +1,156 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    run:
+        using: ubuntu-package
+        dist: bionic
+
+ub18-libc6:
+    description: "Older version of glibc in Ubuntu 18.04 that doesn't cause bug 1678451"
+    treeherder:
+        symbol: Ub18(libc6)
+    run:
+        dsc:
+            url: https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/glibc/2.27-3ubuntu1.2/glibc_2.27-3ubuntu1.2.dsc
+            sha256: 2ac325cce2251c710dd041f4725925cdbccefba6f6f0f0d95a2a5a09e2050c2e
+        patch: ubuntu-glibc.diff
+
+ub18-32-libc6:
+    description: "Older version of glibc in Ubuntu 18.04 that doesn't cause bug 1678451"
+    treeherder:
+        symbol: Ub18(libc6-32)
+    run:
+        dsc:
+            url: https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/glibc/2.27-3ubuntu1.2/glibc_2.27-3ubuntu1.2.dsc
+            sha256: 2ac325cce2251c710dd041f4725925cdbccefba6f6f0f0d95a2a5a09e2050c2e
+        arch: i386
+        patch: ubuntu-glibc.diff
+
+ub18-python-psutil:
+    description: "python-psutil for Ubuntu bionic"
+    treeherder:
+        symbol: Ub18(python-psutil)
+    run:
+        dsc:
+            url: https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/python-psutil/5.4.2-1ubuntu0.1/python-psutil_5.4.2-1ubuntu0.1.dsc
+            sha256: a0ca4560d25fcfe5b7407d2cb21318f0635f2c3559898efce1679eef35b61f05
+        name: python-psutil
+        pre-build-command: >-
+            apt-get install python3.8-dev python3.8-dbg &&
+            export DEBPYTHON3_SUPPORTED="3.8"
+
+ub18-pygobject:
+    description: "pygobject for Ubuntu bionic"
+    treeherder:
+        symbol: Ub18(pygobject)
+    run:
+        dsc:
+            url: http://archive.ubuntu.com/ubuntu/pool/main/p/pygobject/pygobject_3.26.1-2ubuntu1.dsc
+            sha256: b77f84885d9b6d2c03422ecb3bf69d50dd0607d3456154943671e5a1f87946aa
+        name: pygobject
+        patch: pygobject.diff
+        pre-build-command: >-
+            apt-get install python3.8-dev python3.8-dbg &&
+            export DEBPYTHON3_SUPPORTED="3.6,3.8"
+
+ub18-pyatspi:
+    description: "pyatspi for Ubuntu bionic"
+    treeherder:
+        symbol: Ub18(pyatspi)
+    run:
+        dsc:
+            url: http://archive.ubuntu.com/ubuntu/pool/main/p/pyatspi/pyatspi_2.26.0+dfsg-1.dsc
+            sha256: 83c57052b055c0e2ee8307e3467d069de859db6c362137be01d142e085026826
+        name: pyatspi
+        pre-build-command: >-
+            sed -i s/\\basync\\b/asynchronous/ pyatspi/registry.py &&
+            EDITOR=cat dpkg-source --commit . sync &&
+            apt-get install python3.8-dev python3.8-dbg &&
+            export DEBPYTHON3_SUPPORTED="3.6,3.8"
+
+ub18-python-zstandard:
+    description: "python-zstandard for Ubuntu bionic"
+    treeherder:
+        symbol: Ub18(python-zstandard)
+    run:
+        tarball:
+            url: https://github.com/indygreg/python-zstandard/releases/download/0.19.0/zstandard-0.19.0.tar.gz
+            sha256: 31d12fcd942dd8dbf52ca5f6b1bbe287f44e5d551a081a983ff3ea2082867863
+        name: python-zstandard
+        pre-build-command: >-
+            apt-get install python3.8-dev &&
+            export DEBPYTHON3_SUPPORTED="3.8" &&
+            debchange -v 0.19.0-1.ub18moz --distribution bionic "Mozilla backport for bionic"
+
+ub18-mercurial:
+    description: "Modern Mercurial for Ubuntu bionic"
+    treeherder:
+        symbol: Ub18(hg)
+    run:
+        tarball:
+            url: https://www.mercurial-scm.org/release/mercurial-6.4.3.tar.gz
+            sha256: a77fb62d325934a83a00b2fc6db109f44c67b86768fc40490366f513640c7f64
+        pre-build-command: >-
+            apt-get install python3.8-dev &&
+            export DEB_HG_PYTHON_VERSIONS="3.8" &&
+            export DEBPYTHON3_SUPPORTED="3.8" &&
+            cp -r contrib/packaging/debian debian &&
+            sed -i -e "s/__VERSION__/$(awk -F\" '$2 {print $2}' mercurial/__version__.py)-1.ub18moz1/" \
+                         -e "s/__DATE__/$(date --rfc-2822)/" \
+                         -e "s/__CODENAME__/bionic/" debian/changelog
+
+ub20-python-zstandard:
+    description: "python-zstandard for Ubuntu focal"
+    treeherder:
+        symbol: Ub20(python-zstandard)
+    run:
+        tarball:
+            url: https://github.com/indygreg/python-zstandard/releases/download/0.22.0/zstandard-0.22.0.tar.gz
+            sha256: 8226a33c542bcb54cd6bd0a366067b610b41713b64c9abec1bc4533d69f51e70
+        name: python-zstandard
+        dist: focal
+        pre-build-command: debchange -v 0.22.0-1.ub20moz --distribution bionic "Mozilla backport for focal"
+
+ub20-mercurial:
+    description: "Modern Mercurial for Ubuntu focal"
+    treeherder:
+        symbol: Ub20(hg)
+    run:
+        tarball:
+            url: https://www.mercurial-scm.org/release/mercurial-6.4.3.tar.gz
+            sha256: a77fb62d325934a83a00b2fc6db109f44c67b86768fc40490366f513640c7f64
+        dist: focal
+        pre-build-command: >-
+            cp -r contrib/packaging/debian debian &&
+            sed -i -e "s/__VERSION__/$(awk -F\" '$2 {print $2}' mercurial/__version__.py)-1.ub20moz1/" \
+                         -e "s/__DATE__/$(date --rfc-2822)/" \
+                         -e "s/__CODENAME__/focal/" debian/changelog
+
+ub22-python-zstandard:
+    description: "python-zstandard for Ubuntu jammy"
+    treeherder:
+        symbol: Ub22(python-zstandard)
+    run:
+        tarball:
+            url: https://github.com/indygreg/python-zstandard/releases/download/0.22.0/zstandard-0.22.0.tar.gz
+            sha256: 8226a33c542bcb54cd6bd0a366067b610b41713b64c9abec1bc4533d69f51e70
+        name: python-zstandard
+        dist: jammy
+        pre-build-command: debchange -v 0.22.0-1.ub22moz --distribution jammy "Mozilla backport for jammy"
+
+ub22-mercurial:
+    description: "Modern Mercurial for Ubuntu jammy"
+    treeherder:
+        symbol: Ub22(hg)
+    run:
+        tarball:
+            url: https://www.mercurial-scm.org/release/mercurial-6.4.3.tar.gz
+            sha256: a77fb62d325934a83a00b2fc6db109f44c67b86768fc40490366f513640c7f64
+        dist: jammy
+        pre-build-command: >-
+            cp -r contrib/packaging/debian debian &&
+            sed -i -e "s/__VERSION__/$(awk -F\" '$2 {print $2}' mercurial/__version__.py)-1.ub22moz1/" \
+                         -e "s/__DATE__/$(date --rfc-2822)/" \
+                         -e "s/__CODENAME__/jammy/" debian/changelog
diff --git a/taskcluster/ci/partials-signing/kind.yml b/taskcluster/ci/partials-signing/kind.yml
new file mode 100644
index 0000000000..2c2bf0a9a0
--- /dev/null
+++ b/taskcluster/ci/partials-signing/kind.yml
@@ -0,0 +1,24 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.mar_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - partials
+
+jobs:
+    partials-signing:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: promote
+        treeherder-group: ps
+        description-suffix: 'partial signing'
+        required_signoffs:
+            - mar-signing
diff --git a/taskcluster/ci/partials/kind.yml b/taskcluster/ci/partials/kind.yml
new file mode 100644
index 0000000000..ea72198c5c
--- /dev/null
+++ b/taskcluster/ci/partials/kind.yml
@@ -0,0 +1,39 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.partials
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - repackage
+    - repackage-l10n
+
+only-for-attributes:
+    - nightly
+    - shippable
+
+only-for-build-platforms:
+    - macosx64-shippable/opt
+    - macosx64-devedition/opt
+    - win32-shippable/opt
+    - win32-devedition/opt
+    - win64-shippable/opt
+    - win64-devedition/opt
+    - win64-aarch64-shippable/opt
+    - win64-aarch64-devedition/opt
+    - linux-shippable/opt
+    - linux-devedition/opt
+    - linux64-shippable/opt
+    - linux64-devedition/opt
+
+jobs:
+    partials:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: promote
diff --git a/taskcluster/ci/perftest/android.yml b/taskcluster/ci/perftest/android.yml
new file mode 100644
index 0000000000..6faebffee9
--- /dev/null
+++ b/taskcluster/ci/perftest/android.yml
@@ -0,0 +1,338 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+
+job-defaults:
+    fetches:
+        toolchain:
+            - linux64-node
+            - linux64-geckodriver
+
+    worker:
+        env:
+            PYTHONPATH: "testing/mozbase/mozdevice:third_party/python/six"
+
+    run:
+        sparse-profile: perftest
+        checkout: true
+        cwd: '{checkout}'
+        command: >-
+            cd $GECKO_PATH &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --on-try
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+hw-a51:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run ./mach perftest on a Samsung Galaxy a51
+    treeherder:
+        symbol: perftest-a51
+    platform: android-hw-a51-11-0-arm7-shippable/opt
+
+# TODO: is this right?
+hw-a51-aarch64:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run ./mach perftest on a Samsung Galaxy a51
+    treeherder:
+        symbol: perftest-a51
+    platform: android-hw-a51-11-0-aarch64-shippable/opt
+
+hw-a51-startup-fenix-cold-main-first-frame:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run android startup perftest on Fenix on a Samsung A51
+    treeherder:
+        symbol: perftest(startup-fenix-cmff)
+        tier: 2
+    platform: android-hw-a51-11-0-aarch64-shippable/opt
+    attributes:
+        cron: true
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $GECKO_PATH &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --flavor=mobile-browser
+            --AndroidStartUp
+            testing/performance/perftest_android_startup.js
+            --browsertime-cycles=0
+            --AndroidStartUp-test-name=cold_main_first_frame
+            --perfherder
+            --hooks
+            testing/performance/hooks_android_startup.py
+            --AndroidStartUp-product=fenix
+            --AndroidStartUp-release-channel=nightly
+
+hw-a51-startup-fenix-cold-view-nav-start:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run android startup perftest on Fenix on a Samsung A51
+    treeherder:
+        symbol: perftest(startup-fenix-cvns)
+        tier: 2
+    platform: android-hw-a51-11-0-aarch64-shippable/opt
+    attributes:
+        cron: true
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $GECKO_PATH &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --flavor=mobile-browser
+            --AndroidStartUp
+            testing/performance/perftest_android_startup.js
+            --browsertime-cycles=0
+            --AndroidStartUp-test-name=cold_view_nav_start
+            --perfherder
+            --hooks
+            testing/performance/hooks_android_startup.py
+            --AndroidStartUp-product=fenix
+            --AndroidStartUp-release-channel=nightly
+
+hw-a51-startup-focus-cold-main-first-frame:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run android startup perftest on Focus on a Samsung A51
+    treeherder:
+        symbol: perftest(startup-focus-cmff)
+        tier: 2
+    platform: android-hw-a51-11-0-aarch64-shippable/opt
+    attributes:
+        cron: true
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $GECKO_PATH &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --flavor=mobile-browser
+            --AndroidStartUp
+            testing/performance/perftest_android_startup.js
+            --browsertime-cycles=0
+            --AndroidStartUp-test-name=cold_main_first_frame
+            --perfherder
+            --hooks
+            testing/performance/hooks_android_startup.py
+            --AndroidStartUp-product=focus
+            --AndroidStartUp-release-channel=nightly
+
+hw-a51-startup-focus-cold-view-nav-start:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run android startup perftest on Focus on a Samsung A51
+    treeherder:
+        symbol: perftest(startup-focus-cvns)
+        tier: 2
+    platform: android-hw-a51-11-0-aarch64-shippable/opt
+    attributes:
+        cron: true
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $GECKO_PATH &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --flavor=mobile-browser
+            --AndroidStartUp
+            testing/performance/perftest_android_startup.js
+            --browsertime-cycles=0
+            --AndroidStartUp-test-name=cold_view_nav_start
+            --perfherder
+            --hooks
+            testing/performance/hooks_android_startup.py
+            --AndroidStartUp-product=focus
+            --AndroidStartUp-release-channel=nightly
+
+hw-a51-startup-geckoview-cold-main-first-frame:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run android startup perftest on Geckoview on a Samsung A51
+    treeherder:
+        symbol: perftest(startup-geckoview-cmff)
+        tier: 2
+    platform: android-hw-a51-11-0-aarch64-shippable/opt
+    attributes:
+        cron: true
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $GECKO_PATH &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --flavor=mobile-browser
+            --AndroidStartUp
+            testing/performance/perftest_android_startup.js
+            --browsertime-cycles=0
+            --AndroidStartUp-test-name=cold_main_first_frame
+            --perfherder
+            --hooks
+            testing/performance/hooks_android_startup.py
+            --AndroidStartUp-product=geckoview_example
+            --AndroidStartUp-release-channel=nightly
+
+hw-a51-startup-geckoview-cold-view-nav-start:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run android startup perftest on Geckoview_example on a Samsung A51
+    treeherder:
+        symbol: perftest(startup-geckoview-cvns)
+        tier: 2
+    platform: android-hw-a51-11-0-aarch64-shippable/opt
+    attributes:
+        cron: true
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $GECKO_PATH &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --flavor=mobile-browser
+            --AndroidStartUp
+            testing/performance/perftest_android_startup.js
+            --browsertime-cycles=0
+            --AndroidStartUp-test-name=cold_view_nav_start
+            --perfherder
+            --hooks
+            testing/performance/hooks_android_startup.py
+            --AndroidStartUp-product=geckoview_example
+            --AndroidStartUp-release-channel=nightly
+
+hw-a51-perfstats-gv:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run PerfStats perftest on GeckoView on a Samsung A51
+    treeherder:
+        symbol: perftest(perfstats-gv)
+    platform: android-hw-a51-11-0-arm7-shippable/opt
+    attributes:
+        cron: false
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $GECKO_PATH &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --flavor mobile-browser
+            --android
+            --android-app-name org.mozilla.geckoview_example
+            --android-activity org.mozilla.geckoview_example.GeckoViewActivity
+            --android-clear-logcat
+            --android-capture-logcat logcat
+            --android-install-apk gve_nightly_api16
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --perfherder
+            --perfherder-app geckoview
+            --perfherder-metrics name:HttpChannelCompletion,unit:ms name:HttpChannelCompletion_Cache,unit:ms name:HttpChannelCompletion_Network,unit:ms name:DisplayListBuilding,unit:ms name:Reflowing,unit:ms name:Styling,unit:ms
+            --browsertime-iterations 10
+            --hooks testing/performance/hooks_perfstats.py
+            testing/performance/perftest_perfstats.js
+
+hw-a51-aarch64-perfstats-gv:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run PerfStats perftest on GeckoView on a Samsung A51
+    treeherder:
+        symbol: perftest(perfstats-gv)
+    platform: android-hw-a51-11-0-aarch64-shippable/opt
+    attributes:
+        cron: false
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $GECKO_PATH &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --flavor mobile-browser
+            --android
+            --android-app-name org.mozilla.geckoview_example
+            --android-activity org.mozilla.geckoview_example.GeckoViewActivity
+            --android-clear-logcat
+            --android-capture-logcat logcat
+            --android-install-apk gve_nightly_aarch64
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --perfherder
+            --perfherder-app geckoview
+            --perfherder-metrics name:HttpChannelCompletion,unit:ms name:HttpChannelCompletion_Cache,unit:ms name:HttpChannelCompletion_Network,unit:ms name:DisplayListBuilding,unit:ms name:Reflowing,unit:ms name:Styling,unit:ms
+            --browsertime-iterations 10
+            --hooks testing/performance/hooks_perfstats.py
+            testing/performance/perftest_perfstats.js
+
+hw-a51-perfstats-fenix:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run PerfStats perftest on Fenix on a Samsung A51
+    treeherder:
+        symbol: perftest(perfstats-fenix)
+    platform: android-hw-a51-11-0-arm7-shippable/opt
+    attributes:
+        cron: false
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $GECKO_PATH &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --flavor mobile-browser
+            --android
+            --android-app-name org.mozilla.fenix
+            --android-activity org.mozilla.fenix.IntentReceiverActivity
+            --android-clear-logcat
+            --android-capture-logcat logcat
+            --android-install-apk fenix_nightly_armeabi_v7a
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --perfherder
+            --perfherder-app fenix
+            --perfherder-metrics name:HttpChannelCompletion,unit:ms name:HttpChannelCompletion_Cache,unit:ms name:HttpChannelCompletion_Network,unit:ms name:DisplayListBuilding,unit:ms name:Reflowing,unit:ms name:Styling,unit:ms
+            --browsertime-iterations 10
+            --hooks testing/performance/hooks_perfstats.py
+            testing/performance/perftest_perfstats.js
+
+hw-a51-aarch64-perfstats-fenix:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run PerfStats perftest on Fenix on a Samsung A51
+    treeherder:
+        symbol: perftest(perfstats-fenix)
+    platform: android-hw-a51-11-0-aarch64-shippable/opt
+    attributes:
+        cron: false
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $GECKO_PATH &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --flavor mobile-browser
+            --android
+            --android-app-name org.mozilla.fenix
+            --android-activity org.mozilla.fenix.IntentReceiverActivity
+            --android-clear-logcat
+            --android-capture-logcat logcat
+            --android-install-apk fenix_nightly_arm64_v8a
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --perfherder
+            --perfherder-app fenix
+            --perfherder-metrics name:HttpChannelCompletion,unit:ms name:HttpChannelCompletion_Cache,unit:ms name:HttpChannelCompletion_Network,unit:ms name:DisplayListBuilding,unit:ms name:Reflowing,unit:ms name:Styling,unit:ms
+            --browsertime-iterations 10
+            --hooks testing/performance/hooks_perfstats.py
+            testing/performance/perftest_perfstats.js
+
+hw-a51-record-websites:
+    worker-type: t-bitbar-gw-perf-a51
+    description: Run perftest to record mobile websites
+    treeherder:
+        symbol: perftest(rec)
+    platform: android-hw-a51-11-0-aarch64-shippable/opt
+    require-build:
+        android-hw-a51-11-0-aarch64-shippable/opt: build-android-aarch64-shippable/opt
+    attributes:
+        cron: false
+    run-on-projects: []
+    scopes:
+        - secrets:get:project/releng/gecko/build/level-{level}/conditioned-profiles
+        - secrets:get:project/perftest/gecko/level-{level}/perftest-login
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $GECKO_PATH &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --flavor mobile-browser
+            --android
+            --android-app-name org.mozilla.geckoview_example
+            --android-activity org.mozilla.geckoview_example.GeckoViewActivity
+            --android-clear-logcat
+            --android-capture-logcat logcat
+            --android-install-apk gve_nightly_aarch64
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --proxy
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --hooks testing/performance/hooks_recording.py
+            testing/performance/perftest_record.js
diff --git a/taskcluster/ci/perftest/kind.yml b/taskcluster/ci/perftest/kind.yml
new file mode 100644
index 0000000000..5d8f253653
--- /dev/null
+++ b/taskcluster/ci/perftest/kind.yml
@@ -0,0 +1,48 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+    - build
+
+transforms:
+    - gecko_taskgraph.transforms.perftest:transforms
+    - gecko_taskgraph.transforms.source_test:transforms
+    - taskgraph.transforms.task_context
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+jobs-from:
+    - android.yml
+    - linux.yml
+    - macosx.yml
+    - windows.yml
+
+job-defaults:
+    attributes:
+        retrigger: true
+    run-on-projects: []
+    use-system-python: false
+    treeherder:
+        kind: other
+        tier: 3
+    task-context:
+        from-object: {}
+        substitution-fields: []
+    worker:
+        taskcluster-proxy: true
+        max-run-time: 10800
+        env:
+            USE_ARTIFACT: '1'
+            HOSTUTILS_MANIFEST_PATH: "testing/config/tooltool-manifests/linux64/hostutils.manifest"
+        artifacts:
+            - type: directory
+              name: public/build
+              path: artifacts
+    run:
+        run-as-root: true
+        using: run-task
+        checkout: false
diff --git a/taskcluster/ci/perftest/linux.yml b/taskcluster/ci/perftest/linux.yml
new file mode 100644
index 0000000000..1016469fb8
--- /dev/null
+++ b/taskcluster/ci/perftest/linux.yml
@@ -0,0 +1,384 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: t-linux-talos-1804
+    fetches:
+        toolchain:
+            - linux64-node
+            - linux64-geckodriver
+        build:
+            - artifact: target.mozinfo.json
+            - artifact: target.common.tests.tar.gz
+            - artifact: target.condprof.tests.tar.gz
+            - artifact: target.perftests.tests.tar.gz
+            - artifact: target.xpcshell.tests.tar.gz
+            - artifact: target.mochitest.tests.tar.gz
+            - artifact: target.tar.bz2
+    platform: linux1804-64-shippable/opt
+    require-build:
+        linux1804-64-shippable/opt: build-linux64-shippable/opt
+    scopes:
+        - secrets:get:project/releng/gecko/build/level-{level}/conditioned-profiles
+
+try-xpcshell:
+    description: Run ./mach perftest on Linux
+    treeherder:
+        symbol: perftest(linux-xpcshell)
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --on-try
+            --flavor desktop-browser
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --xpcshell-binary ${MOZ_FETCHES_DIR}/bin/xpcshell
+            --xpcshell-mozinfo ${MOZ_FETCHES_DIR}/target.mozinfo.json
+            --xpcshell-nodejs ${MOZ_FETCHES_DIR}/node/bin/node
+            --xpcshell-xre-path ${MOZ_FETCHES_DIR}/firefox
+
+webpagetest-firefox:
+    description: Run webpagetest performance pageload tests on Firefox against Alexa top 50 websites
+    treeherder:
+        symbol: perftest(linux-webpagetest)
+        tier: 2
+    attributes:
+        cron: true
+    scopes:
+        - secrets:get:project/perftest/gecko/level-{level}/perftest-login
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            testing/performance/perftest_WPT_firefox_init_file.js
+            --flavor=webpagetest
+            --webpagetest
+            --perfherder
+            --perfherder-metrics median
+            --perfherder-app=firefox
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+webpagetest-chrome:
+    description: Run webpagetest performance pageload tests on Chrome against Alexa top 50 websites
+    treeherder:
+        symbol: perftest-chrome(linux-webpagetest)
+        tier: 2
+    attributes:
+        cron: true
+    scopes:
+        - secrets:get:project/perftest/gecko/level-{level}/perftest-login
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            testing/performance/perftest_WPT_chrome_init_file.js
+            --flavor=webpagetest
+            --webpagetest
+            --perfherder
+            --perfherder-metrics median
+            --perfherder-app=chrome
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+try-browsertime:
+    description: Run ./mach perftest on Linux
+    treeherder:
+        symbol: perftest(linux-bt)
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --on-try
+            --browsertime-binary ${MOZ_FETCHES_DIR}/firefox/firefox-bin
+            --flavor desktop-browser
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+domcount:
+    description: Run DOM test
+    treeherder:
+        symbol: perftest(linux-dom)
+    attributes:
+        batch: false
+        cron: true
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            browser/base/content/test/perftest_browser_xhtml_dom.js
+            --browsertime-binary ${MOZ_FETCHES_DIR}/firefox/firefox-bin
+            --flavor desktop-browser
+            --perfherder
+            --perfherder-metrics name:totalDOMCount,unit:count name:panelMenuCount,unit:count name:lightDOMCount,unit:count name:lightDOMDetails,unit:count
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+# We'd like not to have to specify each test separately here.  See bug 1865852.
+service-worker:
+    description: Run service worker tests
+    treeherder:
+        symbol: perftest(linux-sw)
+        tier: 2
+    attributes:
+        batch: false
+        cron: false
+    run-on-projects: [autoland, mozilla-central]
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            dom/serviceworkers/test/performance/test_caching.html
+            --mochitest-binary ${MOZ_FETCHES_DIR}/firefox/firefox-bin
+            --flavor mochitest
+            --output $MOZ_FETCHES_DIR/../artifacts &&
+            python3 python/mozperftest/mozperftest/runner.py
+            dom/serviceworkers/test/performance/test_fetch.html
+            --mochitest-binary ${MOZ_FETCHES_DIR}/firefox/firefox-bin
+            --flavor mochitest
+            --output $MOZ_FETCHES_DIR/../artifacts &&
+            python3 python/mozperftest/mozperftest/runner.py
+            dom/serviceworkers/test/performance/test_registration.html
+            --mochitest-binary ${MOZ_FETCHES_DIR}/firefox/firefox-bin
+            --flavor mochitest
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+http3:
+    description: Run HTTP/3 test
+    treeherder:
+        symbol: perftest(http3)
+    attributes:
+        batch: false
+        # Disabled due to bug 1849400
+        cron: false
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            xpcshell/tests/netwerk/test/unit/test_http3_perf.js
+            --flavor xpcshell
+            --perfherder
+            --perfherder-metrics name:speed,unit:bps
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --xpcshell-binary ${MOZ_FETCHES_DIR}/bin/xpcshell
+            --xpcshell-mozinfo ${MOZ_FETCHES_DIR}/target.mozinfo.json
+            --xpcshell-nodejs ${MOZ_FETCHES_DIR}/node/bin/node
+            --xpcshell-cycles 13
+            --xpcshell-xre-path ${MOZ_FETCHES_DIR}/firefox
+
+livesites:
+    description: Live site performance testing
+    variants: [http3]
+    treeherder:
+        symbol: perftest({symbol})
+    attributes:
+        batch: false
+        cron: true
+    perftest:
+        - [cloudflare, netwerk/test/perf/perftest_http3_cloudflareblog.js]
+        # broken: bug 1678588
+        # - [fb-scroll, netwerk/test/perf/perftest_http3_facebook_scroll.js]
+        # broken: bug 1879851
+        # - [g-image, netwerk/test/perf/perftest_http3_google_image.js]
+        # broken: bug 1799655
+        # - [g-search, netwerk/test/perf/perftest_http3_google_search.js]
+        - [lq-fetch, netwerk/test/perf/perftest_http3_lucasquicfetch.js]
+        # broken: bug 1695871
+        # - [ytw, netwerk/test/perf/perftest_http3_youtube_watch.js]
+        # - [ytw-scroll, netwerk/test/perf/perftest_http3_youtube_watch_scroll.js]
+    perftest-metrics:
+        by-perftest:
+            cloudflare:
+                # Example of how the specify settings for each metric
+                resources:
+                    extraOptions: []
+                firstPaint: {}
+                navigationTiming: {}
+                pageTimings: {}
+                timeToContentfulPaint: {}
+            # broken: bug 1678588
+            # fb-scroll: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint, requestsPerSecond]
+            # broken: bug 1879851
+            # g-image: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint, imagesPerSecond, imageLoadTime]
+            # g-search: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint]
+            lq-fetch: [navigationTiming, pageTimings, resources, timeToContentfulPaint, resourceLoadTime, imagesLoaded, imagesMissed]
+            # broken: bug 1695871
+            # ytw: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint, droppedFrames, decodedFrames]
+            # ytw-scroll: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint, droppedFrames, decodedFrames]
+            default: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint]
+    # Leave this here so people know this exists when looking
+    # for examples
+    perftest-perfherder-global:
+        extraOptions: []
+    perftest-extra-options:
+        by-perftest:
+            cloudflare:
+                - --perfherder-split-by browserScripts.pageinfo.url
+            # g-search:
+            #     - --perfherder-split-by browserScripts.pageinfo.url
+            lq-fetch:
+                - --perfherder-split-by browserScripts.pageinfo.url
+            default: []
+    perftest-btime-variants:
+        by-perftest:
+            cloudflare:
+                - ["10s", browsertime.waitTime=10000]
+                - ["25s", browsertime.waitTime=25000]
+                - ["35s", browsertime.waitTime=35000]
+                - ["60s", browsertime.waitTime=60000]
+            # broken: bug 1678588
+            # fb-scroll:
+            #     - ["10s", browsertime.waitTime=10000]
+            #     - ["25s", browsertime.waitTime=25000]
+            #     - ["35s", browsertime.waitTime=35000]
+            #     - ["60s", browsertime.waitTime=60000]
+            # g-search:
+            #     - ["10s", browsertime.waitTime=10000]
+            #     - ["25s", browsertime.waitTime=25000]
+            #     - ["35s", browsertime.waitTime=35000]
+            #     - ["60s", browsertime.waitTime=60000]
+            lq-fetch:
+                - [null, "browsertime.waitTime=1000,browsertime.cycles=5"]
+            # broken: bug 1695871
+            # ytw:
+            #     - [null, browsertime.waitTime=20000]
+            # ytw-scroll:
+            #     - [null, browsertime.waitTime=20000]
+            default:
+                - [null, browsertime.waitTime=1000]
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            {perftest_testname}
+            --browsertime-binary ${MOZ_FETCHES_DIR}/firefox/firefox-bin
+            --browsertime-iterations 10
+            --visualmetrics
+            --flavor desktop-browser
+            --perfherder
+            --perfherder-metrics {perftest_metrics}
+            --perfherder-simplify-names
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+controlled:
+    description: Controlled performance testing
+    treeherder:
+        symbol: perftest(controlled)
+    worker:
+        max-run-time: 14400
+    attributes:
+        batch: false
+        cron: false
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            netwerk/test/perf/perftest_http3_controlled.js
+            --browsertime-binary ${MOZ_FETCHES_DIR}/firefox/firefox-bin
+            --browsertime-iterations 1
+            --browsertime-cycles 96
+            --hooks netwerk/test/perf/hooks_throttling.py
+            --flavor desktop-browser
+            --perfherder
+            --perfherder-metrics name:navigationTiming,unit:ms name:pageTimings,unit:ms name:resources,unit:ms name:firstPaint,unit:ms name:timeToContentfulPaint,unit:ms
+            --perfherder-simplify-names
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+perfstats:
+    description: Run PerfStats pageload test
+    treeherder:
+        symbol: perftest(linux-perfstats)
+    attributes:
+        cron: false
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --browsertime-binary ${MOZ_FETCHES_DIR}/firefox/firefox-bin
+            --flavor desktop-browser
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --perfherder
+            --perfherder-metrics name:HttpChannelCompletion,unit:ms name:HttpChannelCompletion_Cache,unit:ms name:HttpChannelCompletion_Network,unit:ms name:DisplayListBuilding,unit:ms name:Reflowing,unit:ms name:Styling,unit:ms
+            --browsertime-iterations 10
+            --hooks testing/performance/hooks_perfstats.py
+            testing/performance/perftest_perfstats.js
+
+record-websites:
+    description: Run mozperftest to record desktop websites
+    platform: linux1804-64/opt
+    require-build:
+        linux1804-64/opt: build-linux64/opt
+    treeherder:
+        symbol: perftest(rec)
+    attributes:
+        cron: false
+    run-on-projects: []
+    scopes:
+        - secrets:get:project/releng/gecko/build/level-{level}/conditioned-profiles
+        - secrets:get:project/perftest/gecko/level-{level}/perftest-login
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            --flavor desktop-browser
+            --verbose
+            --browsertime-binary ${MOZ_FETCHES_DIR}/firefox/firefox-bin
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --proxy
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --hooks testing/performance/hooks_recording.py
+            testing/performance/perftest_record.js
+
+side-by-side:
+    description: Run mozperftest side-by-side
+    treeherder:
+        symbol: perftest(side-by-side)
+        tier: 2
+    run:
+        using: run-task
+        sparse-profile: perftest
+        checkout: true
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            tools side-by-side
+            -t {test_name}
+            --base-platform {platform}
+            --base-revision {base_revision}
+            --new-revision {new_revision}
+            --base-branch {base_branch}
+            --new-branch {new_branch}
+
+mwu-change-detector:
+    description: Runs Mann-Whitney U-test on two revisions to detect performance changes
+    treeherder:
+        symbol: perftest-detect(mwu)
+        tier: 2
+    run:
+        using: run-task
+        sparse-profile: perftest
+        checkout: true
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 python/mozperftest/mozperftest/runner.py
+            tools change-detector
+            --task-name {task_name}
+            --base-revision {base_revision}
+            --new-revision {new_revision}
+            --base-branch {base_branch}
+            --new-branch {new_branch}
diff --git a/taskcluster/ci/perftest/macosx.yml b/taskcluster/ci/perftest/macosx.yml
new file mode 100644
index 0000000000..d98f7524b8
--- /dev/null
+++ b/taskcluster/ci/perftest/macosx.yml
@@ -0,0 +1,287 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: t-osx-1015-r8
+    fetches:
+        build:
+            - artifact: target.mozinfo.json
+            - artifact: target.common.tests.tar.gz
+            - artifact: target.condprof.tests.tar.gz
+            - artifact: target.mochitest.tests.tar.gz
+            - artifact: target.xpcshell.tests.tar.gz
+            - artifact: target.perftests.tests.tar.gz
+            - artifact: target.dmg
+              extract: false
+        toolchain:
+            - macosx64-geckodriver
+            - macosx64-node
+    platform: macosx1015-64-shippable-qr/opt
+    require-build:
+        macosx1015-64-shippable-qr/opt: build-macosx64-shippable/opt
+    scopes:
+        - secrets:get:project/releng/gecko/build/level-{level}/conditioned-profiles
+
+try-xpcshell:
+    description: Run ./mach perftest on macOs
+    treeherder:
+        symbol: perftest(macos-xpcshell)
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 -m venv . &&
+            bin/python3 python/mozperftest/mozperftest/runner.py
+            --on-try
+            --flavor desktop-browser
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --xpcshell-binary ${MOZ_FETCHES_DIR}/bin/xpcshell
+            --xpcshell-mozinfo ${MOZ_FETCHES_DIR}/target.mozinfo.json
+            --xpcshell-nodejs ${MOZ_FETCHES_DIR}/node/bin/node
+            --xpcshell-xre-path ${MOZ_FETCHES_DIR}/target.dmg
+
+try-browsertime:
+    description: Run ./mach perftest on macOs
+    treeherder:
+        symbol: perftest(macos-bt)
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 -m venv . &&
+            bin/python3 python/mozperftest/mozperftest/runner.py
+            --on-try
+            --browsertime-binary ${MOZ_FETCHES_DIR}/target.dmg
+            --browsertime-node ${MOZ_FETCHES_DIR}/node/bin/node
+            --flavor desktop-browser
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+# We'd like not to have to specify each test separately here.  See bug 1865852.
+service-worker:
+    description: Run service worker tests
+    treeherder:
+        symbol: perftest(macosx-sw)
+        tier: 2
+    attributes:
+        batch: false
+        cron: false
+    run-on-projects: [autoland, mozilla-central]
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 -m venv . &&
+            bin/python3 python/mozperftest/mozperftest/runner.py
+            dom/serviceworkers/test/performance/test_caching.html
+            --mochitest-binary ${MOZ_FETCHES_DIR}/target.dmg
+            --flavor mochitest
+            --output $MOZ_FETCHES_DIR/../artifacts &&
+            bin/python3 python/mozperftest/mozperftest/runner.py
+            dom/serviceworkers/test/performance/test_fetch.html
+            --mochitest-binary ${MOZ_FETCHES_DIR}/target.dmg
+            --flavor mochitest
+            --output $MOZ_FETCHES_DIR/../artifacts &&
+            bin/python3 python/mozperftest/mozperftest/runner.py
+            dom/serviceworkers/test/performance/test_registration.html
+            --mochitest-binary ${MOZ_FETCHES_DIR}/target.dmg
+            --flavor mochitest
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+domcount:
+    description: Run DOM test on macOS
+    treeherder:
+        symbol: perftest(macos-dom)
+    attributes:
+        batch: false
+        cron: true
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 -m venv . &&
+            bin/python3 python/mozperftest/mozperftest/runner.py
+            browser/base/content/test/perftest_browser_xhtml_dom.js
+            --browsertime-binary ${MOZ_FETCHES_DIR}/target.dmg
+            --browsertime-node ${MOZ_FETCHES_DIR}/node/bin/node
+            --flavor desktop-browser
+            --perfherder
+            --perfherder-metrics name:totalDOMCount,unit:count name:panelMenuCount,unit:count name:lightDOMCount,unit:count name:lightDOMDetails,unit:count
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+http3:
+    description: Run HTTP/3 test
+    treeherder:
+        symbol: perftest(http3)
+    attributes:
+        batch: false
+        # Disabled due to bug 1849400
+        cron: false
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 -m venv . &&
+            bin/python3 python/mozperftest/mozperftest/runner.py
+            xpcshell/tests/netwerk/test/unit/test_http3_perf.js
+            --flavor xpcshell
+            --perfherder
+            --perfherder-metrics name:speed,unit:bps
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --xpcshell-binary ${MOZ_FETCHES_DIR}/bin/xpcshell
+            --xpcshell-mozinfo ${MOZ_FETCHES_DIR}/target.mozinfo.json
+            --xpcshell-nodejs ${MOZ_FETCHES_DIR}/node/bin/node
+            --xpcshell-cycles 13
+            --xpcshell-xre-path ${MOZ_FETCHES_DIR}/target.dmg
+
+
+livesites:
+    description: Live site performance testing
+    variants: [http3]
+    treeherder:
+        symbol: perftest({symbol})
+    attributes:
+        batch: false
+        cron: true
+    perftest:
+        - [cloudflare, netwerk/test/perf/perftest_http3_cloudflareblog.js]
+        # broken: bug 1678588
+        # - [fb-scroll, netwerk/test/perf/perftest_http3_facebook_scroll.js]
+        # broken: bug 1879851
+        # - [g-image, netwerk/test/perf/perftest_http3_google_image.js]
+        # broken: bug 1799655
+        # - [g-search, netwerk/test/perf/perftest_http3_google_search.js]
+        - [lq-fetch, netwerk/test/perf/perftest_http3_lucasquicfetch.js]
+        # broken: bug 1695871
+        # - [ytw, netwerk/test/perf/perftest_http3_youtube_watch.js]
+        # - [ytw-scroll, netwerk/test/perf/perftest_http3_youtube_watch_scroll.js]
+    perftest-metrics:
+        by-perftest:
+            cloudflare:
+                # Example of how the specify settings for each metric
+                resources:
+                    extraOptions: []
+                firstPaint: {}
+                navigationTiming: {}
+                pageTimings: {}
+                timeToContentfulPaint: {}
+            # broken: bug 1678588
+            # fb-scroll: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint, requestsPerSecond]
+            # broken: bug 1879851
+            # g-image: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint, imagesPerSecond, imageLoadTime]
+            # g-search: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint]
+            lq-fetch: [navigationTiming, pageTimings, resources, timeToContentfulPaint, resourceLoadTime, imagesLoaded, imagesMissed]
+            # broken: bug 1695871
+            # ytw: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint, droppedFrames, decodedFrames]
+            # ytw-scroll: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint, droppedFrames, decodedFrames]
+            default: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint]
+    # Leave this here so people know this exists when looking
+    # for examples
+    perftest-perfherder-global:
+        extraOptions: []
+    perftest-extra-options:
+        by-perftest:
+            cloudflare:
+                - --perfherder-split-by browserScripts.pageinfo.url
+            # g-search:
+            #     - --perfherder-split-by browserScripts.pageinfo.url
+            lq-fetch:
+                - --perfherder-split-by browserScripts.pageinfo.url
+            default: []
+    perftest-btime-variants:
+        by-perftest:
+            cloudflare:
+                - ["10s", browsertime.waitTime=10000]
+                - ["25s", browsertime.waitTime=25000]
+                - ["35s", browsertime.waitTime=35000]
+                - ["60s", browsertime.waitTime=60000]
+            # broken: bug 1678588
+            # fb-scroll:
+            #     - ["10s", browsertime.waitTime=10000]
+            #     - ["25s", browsertime.waitTime=25000]
+            #     - ["35s", browsertime.waitTime=35000]
+            #     - ["60s", browsertime.waitTime=60000]
+            # g-search:
+            #     - ["10s", browsertime.waitTime=10000]
+            #     - ["25s", browsertime.waitTime=25000]
+            #     - ["35s", browsertime.waitTime=35000]
+            #     - ["60s", browsertime.waitTime=60000]
+            lq-fetch:
+                - [null, "browsertime.waitTime=1000,browsertime.cycles=5"]
+            # broken: bug 1695871
+            # ytw:
+            #     - [null, browsertime.waitTime=20000]
+            # ytw-scroll:
+            #     - [null, browsertime.waitTime=20000]
+            default:
+                - [null, browsertime.waitTime=1000]
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 -m venv . &&
+            bin/python3 python/mozperftest/mozperftest/runner.py
+            {perftest_testname}
+            --browsertime-binary ${MOZ_FETCHES_DIR}/target.dmg
+            --browsertime-node ${MOZ_FETCHES_DIR}/node/bin/node
+            --browsertime-iterations 10
+            --flavor desktop-browser
+            --perfherder
+            --perfherder-metrics {perftest_metrics}
+            --perfherder-simplify-names
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+controlled:
+    description: Controlled performance testing
+    treeherder:
+        symbol: perftest(controlled)
+    worker:
+        max-run-time: 14400
+    attributes:
+        batch: false
+        cron: false
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 -m venv . &&
+            python3 python/mozperftest/mozperftest/runner.py
+            netwerk/test/perf/perftest_http3_controlled.js
+            --browsertime-binary ${MOZ_FETCHES_DIR}/target.dmg
+            --browsertime-node ${MOZ_FETCHES_DIR}/node/bin/node
+            --browsertime-iterations 1
+            --browsertime-cycles 96
+            --hooks netwerk/test/perf/hooks_throttling.py
+            --flavor desktop-browser
+            --perfherder
+            --perfherder-metrics name:navigationTiming,unit:ms name:pageTimings,unit:ms name:resources,unit:ms name:firstPaint,unit:ms name:timeToContentfulPaint,unit:ms
+            --perfherder-simplify-names
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+perfstats:
+    description: Run PerfStats pageload test
+    treeherder:
+        symbol: perftest(macos-perfstats)
+    attributes:
+        batch: false
+        cron: false
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3 -m venv . &&
+            bin/python3 python/mozperftest/mozperftest/runner.py
+            --browsertime-binary ${MOZ_FETCHES_DIR}/target.dmg
+            --browsertime-node ${MOZ_FETCHES_DIR}/node/bin/node
+            --flavor desktop-browser
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --perfherder
+            --perfherder-metrics name:HttpChannelCompletion,unit:ms name:HttpChannelCompletion_Cache,unit:ms name:HttpChannelCompletion_Network,unit:ms name:DisplayListBuilding,unit:ms name:Reflowing,unit:ms name:Styling,unit:ms
+            --browsertime-iterations 10
+            --hooks testing/performance/hooks_perfstats.py
+            testing/performance/perftest_perfstats.js
diff --git a/taskcluster/ci/perftest/windows.yml b/taskcluster/ci/perftest/windows.yml
new file mode 100644
index 0000000000..3e027e5741
--- /dev/null
+++ b/taskcluster/ci/perftest/windows.yml
@@ -0,0 +1,235 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: t-win10-64-1803-hw
+    fetches:
+        build:
+            - artifact: target.condprof.tests.tar.gz
+            - artifact: target.common.tests.tar.gz
+            - artifact: target.mochitest.tests.tar.gz
+            - artifact: target.perftests.tests.tar.gz
+            - artifact: target.zip
+        toolchain:
+            - win64-node
+            - win64-geckodriver
+    platform: windows10-64-shippable/opt
+    require-build:
+        windows10-64-shippable/opt: build-win64-shippable/opt
+    scopes:
+        - secrets:get:project/releng/gecko/build/level-{level}/conditioned-profiles
+
+try-browsertime:
+    description: Run ./mach perftest on windows
+    treeherder:
+        symbol: perftest(win-bt)
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3.exe python/mozperftest/mozperftest/runner.py
+            --on-try
+            --browsertime-binary ${MOZ_FETCHES_DIR}/firefox/firefox.exe
+            --flavor desktop-browser
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver.exe
+            --browsertime-node ${MOZ_FETCHES_DIR}/node/node.exe
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+# We'd like not to have to specify each test separately here.  See bug 1865852.
+service-worker:
+    description: Run service worker tests
+    treeherder:
+        symbol: perftest(win-sw)
+        tier: 2
+    attributes:
+        batch: false
+        cron: false
+    run-on-projects: [autoland, mozilla-central]
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3.exe python/mozperftest/mozperftest/runner.py
+            dom/serviceworkers/test/performance/test_caching.html
+            --mochitest-binary ${MOZ_FETCHES_DIR}/firefox/firefox.exe
+            --flavor mochitest
+            --output $MOZ_FETCHES_DIR/../artifacts &&
+            python3.exe python/mozperftest/mozperftest/runner.py
+            dom/serviceworkers/test/performance/test_fetch.html
+            --mochitest-binary ${MOZ_FETCHES_DIR}/firefox/firefox.exe
+            --flavor mochitest
+            --output $MOZ_FETCHES_DIR/../artifacts &&
+            python3.exe python/mozperftest/mozperftest/runner.py
+            dom/serviceworkers/test/performance/test_registration.html
+            --mochitest-binary ${MOZ_FETCHES_DIR}/firefox/firefox.exe
+            --flavor mochitest
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+domcount:
+    description: Run DOM test
+    treeherder:
+        symbol: perftest(win-dom)
+    attributes:
+        batch: false
+        cron: true
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3.exe python/mozperftest/mozperftest/runner.py
+            browser/base/content/test/perftest_browser_xhtml_dom.js
+            --browsertime-binary ${MOZ_FETCHES_DIR}/firefox/firefox.exe
+            --flavor desktop-browser
+            --perfherder
+            --perfherder-metrics name:totalDOMCount,unit:count name:panelMenuCount,unit:count name:lightDOMCount,unit:count name:lightDOMDetails,unit:count
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver.exe
+            --browsertime-node ${MOZ_FETCHES_DIR}/node/node.exe
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+
+livesites:
+    description: Live site performance testing
+    variants: [http3]
+    treeherder:
+        symbol: perftest({symbol})
+    attributes:
+        batch: false
+        cron: true
+    perftest:
+        - [cloudflare, netwerk/test/perf/perftest_http3_cloudflareblog.js]
+        # broken: bug 1678588
+        # - [fb-scroll, netwerk/test/perf/perftest_http3_facebook_scroll.js]
+        # broken: bug 1879851
+        # - [g-image, netwerk/test/perf/perftest_http3_google_image.js]
+        # broken: bug 1799655
+        # - [g-search, netwerk/test/perf/perftest_http3_google_search.js]
+        - [lq-fetch, netwerk/test/perf/perftest_http3_lucasquicfetch.js]
+        # broken: bug 1695871
+        # - [ytw, netwerk/test/perf/perftest_http3_youtube_watch.js]
+        # - [ytw-scroll, netwerk/test/perf/perftest_http3_youtube_watch_scroll.js]
+    perftest-metrics:
+        by-perftest:
+            cloudflare:
+                # Example of how the specify settings for each metric
+                resources:
+                    extraOptions: []
+                firstPaint: {}
+                navigationTiming: {}
+                pageTimings: {}
+                timeToContentfulPaint: {}
+            # broken: bug 1678588
+            # fb-scroll: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint, requestsPerSecond]
+            # broken: bug 1879851
+            # g-image: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint, imagesPerSecond, imageLoadTime]
+            # g-search: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint]
+            lq-fetch: [navigationTiming, pageTimings, resources, timeToContentfulPaint, resourceLoadTime, imagesLoaded, imagesMissed]
+            # broken: bug 1695871
+            # ytw: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint, droppedFrames, decodedFrames]
+            # ytw-scroll: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint, droppedFrames, decodedFrames]
+            default: [navigationTiming, pageTimings, resources, firstPaint, timeToContentfulPaint]
+    # Leave this here so people know this exists when looking
+    # for examples
+    perftest-perfherder-global:
+        extraOptions: []
+    perftest-extra-options:
+        by-perftest:
+            cloudflare:
+                - --perfherder-split-by browserScripts.pageinfo.url
+            # g-search:
+            #     - --perfherder-split-by browserScripts.pageinfo.url
+            lq-fetch:
+                - --perfherder-split-by browserScripts.pageinfo.url
+            default: []
+    perftest-btime-variants:
+        by-perftest:
+            cloudflare:
+                - ["10s", browsertime.waitTime=10000]
+                - ["25s", browsertime.waitTime=25000]
+                - ["35s", browsertime.waitTime=35000]
+                - ["60s", browsertime.waitTime=60000]
+            # broken: bug 1678588
+            # fb-scroll:
+            #     - ["10s", browsertime.waitTime=10000]
+            #     - ["25s", browsertime.waitTime=25000]
+            #     - ["35s", browsertime.waitTime=35000]
+            #     - ["60s", browsertime.waitTime=60000]
+            # g-search:
+            #     - ["10s", browsertime.waitTime=10000]
+            #     - ["25s", browsertime.waitTime=25000]
+            #     - ["35s", browsertime.waitTime=35000]
+            #     - ["60s", browsertime.waitTime=60000]
+            lq-fetch:
+                - [null, "browsertime.waitTime=1000,browsertime.cycles=5"]
+            # broken: bug 1695871
+            # ytw:
+            #     - [null, browsertime.waitTime=20000]
+            # ytw-scroll:
+            #     - [null, browsertime.waitTime=20000]
+            default:
+                - [null, browsertime.waitTime=1000]
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3.exe python/mozperftest/mozperftest/runner.py
+            {perftest_testname}
+            --browsertime-binary ${MOZ_FETCHES_DIR}/firefox/firefox.exe
+            --browsertime-iterations 10
+            --flavor desktop-browser
+            --perfherder
+            --perfherder-metrics {perftest_metrics}
+            --perfherder-simplify-names
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver.exe
+            --browsertime-node ${MOZ_FETCHES_DIR}/node/node.exe
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+controlled:
+    description: Controlled performance testing
+    treeherder:
+        symbol: perftest(controlled)
+    worker:
+        max-run-time: 14400
+    attributes:
+        batch: false
+        cron: false
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3.exe python/mozperftest/mozperftest/runner.py
+            netwerk/test/perf/perftest_http3_controlled.js
+            --browsertime-binary ${MOZ_FETCHES_DIR}/firefox/firefox.exe
+            --browsertime-iterations 1
+            --browsertime-cycles 96
+            --hooks netwerk/test/perf/hooks_throttling.py
+            --flavor desktop-browser
+            --perfherder
+            --perfherder-metrics name:navigationTiming,unit:ms name:pageTimings,unit:ms name:resources,unit:ms name:firstPaint,unit:ms name:timeToContentfulPaint,unit:ms
+            --perfherder-simplify-names
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver.exe
+            --browsertime-node ${MOZ_FETCHES_DIR}/node/node.exe
+            --output $MOZ_FETCHES_DIR/../artifacts
+
+perfstats:
+    description: Run PerfStats pageload test
+    treeherder:
+        symbol: perftest(win-perfstats)
+    attributes:
+        batch: false
+        cron: false
+    run:
+        command: >-
+            mkdir -p $MOZ_FETCHES_DIR/../artifacts &&
+            cd $MOZ_FETCHES_DIR &&
+            python3.exe python/mozperftest/mozperftest/runner.py
+            --browsertime-binary ${MOZ_FETCHES_DIR}/firefox/firefox.exe
+            --flavor desktop-browser
+            --browsertime-geckodriver ${MOZ_FETCHES_DIR}/geckodriver.exe
+            --browsertime-node ${MOZ_FETCHES_DIR}/node/node.exe
+            --output $MOZ_FETCHES_DIR/../artifacts
+            --perfherder
+            --perfherder-metrics name:HttpChannelCompletion,unit:ms name:HttpChannelCompletion_Cache,unit:ms name:HttpChannelCompletion_Network,unit:ms name:DisplayListBuilding,unit:ms name:Reflowing,unit:ms name:Styling,unit:ms
+            --browsertime-iterations 10
+            --hooks testing/performance/hooks_perfstats.py
+            testing/performance/perftest_perfstats.js
diff --git a/taskcluster/ci/post-balrog-dummy/kind.yml b/taskcluster/ci/post-balrog-dummy/kind.yml
new file mode 100644
index 0000000000..e1a9849bbc
--- /dev/null
+++ b/taskcluster/ci/post-balrog-dummy/kind.yml
@@ -0,0 +1,22 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.per_platform_dummy
+    - gecko_taskgraph.transforms.reverse_chunk_deps
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - balrog
+
+jobs:
+    post-balrog-dummy:
+        description: Dummy task to deal with max_dependencies
+        from-deps: {}
+        run-on-projects: []
+        shipping-phase: promote
+        worker-type: succeed
diff --git a/taskcluster/ci/post-beetmover-checksums-dummy/kind.yml b/taskcluster/ci/post-beetmover-checksums-dummy/kind.yml
new file mode 100644
index 0000000000..40ff97dce8
--- /dev/null
+++ b/taskcluster/ci/post-beetmover-checksums-dummy/kind.yml
@@ -0,0 +1,31 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.reverse_chunk_deps:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - beetmover-checksums
+    - release-beetmover-source-checksums
+    - release-eme-free-repack-beetmover-checksums
+    - release-beetmover-signed-langpacks-checksums
+
+jobs:
+    firefox-promote:
+        name: post-beetmover-checksums-dummy
+        description: Dummy task to deal with max_dependencies
+        run-on-projects: []
+        shipping-phase: promote
+        shipping-product: firefox
+        worker-type: succeed
+    devedition-promote:
+        name: post-beetmover-checksums-dummy
+        description: Dummy task to deal with max_dependencies
+        run-on-projects: []
+        shipping-phase: promote
+        shipping-product: devedition
+        worker-type: succeed
diff --git a/taskcluster/ci/post-beetmover-dummy/kind.yml b/taskcluster/ci/post-beetmover-dummy/kind.yml
new file mode 100644
index 0000000000..e5d50ce256
--- /dev/null
+++ b/taskcluster/ci/post-beetmover-dummy/kind.yml
@@ -0,0 +1,23 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.per_platform_dummy
+    - gecko_taskgraph.transforms.reverse_chunk_deps
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - beetmover-checksums
+    - beetmover-repackage
+
+jobs:
+    post-beetmover-dummy:
+        description: Dummy task to deal with max_dependencies
+        from-deps: {}
+        run-on-projects: []
+        shipping-phase: promote
+        worker-type: succeed
diff --git a/taskcluster/ci/post-langpack-dummy/kind.yml b/taskcluster/ci/post-langpack-dummy/kind.yml
new file mode 100644
index 0000000000..95fe9f7684
--- /dev/null
+++ b/taskcluster/ci/post-langpack-dummy/kind.yml
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.reverse_chunk_deps:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - release-beetmover-signed-langpacks
+
+jobs:
+    firefox-promote:
+        name: post-langpack-dummy
+        description: Dummy task to deal with max_dependencies
+        run-on-projects: []
+        shipping-phase: promote
+        shipping-product: firefox
+        worker-type: succeed
+
+    devedition-promote:
+        name: post-langpack-dummy
+        description: Dummy task to deal with max_dependencies
+        run-on-projects: []
+        shipping-phase: promote
+        shipping-product: devedition
+        worker-type: succeed
diff --git a/taskcluster/ci/post-update-verify-dummy/kind.yml b/taskcluster/ci/post-update-verify-dummy/kind.yml
new file mode 100644
index 0000000000..6d7bfb3515
--- /dev/null
+++ b/taskcluster/ci/post-update-verify-dummy/kind.yml
@@ -0,0 +1,22 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.per_platform_dummy
+    - gecko_taskgraph.transforms.reverse_chunk_deps
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-update-verify
+
+jobs:
+    post-update-verify-dummy:
+        description: Dummy task to deal with max_dependencies
+        from-deps: {}
+        run-on-projects: []
+        shipping-phase: promote
+        worker-type: succeed
diff --git a/taskcluster/ci/release-balrog-scheduling/kind.yml b/taskcluster/ci/release-balrog-scheduling/kind.yml
new file mode 100644
index 0000000000..64bd751ca3
--- /dev/null
+++ b/taskcluster/ci/release-balrog-scheduling/kind.yml
@@ -0,0 +1,92 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.scriptworker:add_balrog_scopes
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - release-bouncer-check
+    - release-push-langpacks
+
+job-defaults:
+    run-on-projects: []
+    shipping-phase: ship
+    worker-type: balrog
+    worker:
+        implementation: balrog
+        balrog-action: schedule
+
+jobs:
+    firefox:
+        description: Schedule Firefox publishing in balrog
+        name: release-firefox_schedule_publishing_in_balrog
+        shipping-product: firefox
+        worker:
+            product: firefox
+            publish-rules:
+                by-release-level:
+                    production:
+                        by-release-type:
+                            beta: [32]
+                            release: [145]
+                            esr115: [17824]
+                            default: []
+                    staging:
+                        by-release-type:
+                            beta: [32]
+                            release: [145]
+                            esr115: [909]
+                            default: []
+            background-rate:
+                by-release-type:
+                    beta:
+                        by-beta-number:
+                            '1': 25
+                            '2': 50
+                            '3': 100
+                            default: null
+                    default: null
+            force-fallback-mapping-update:
+                by-release-type:
+                    beta:
+                        by-beta-number:
+                            '1': true
+                            default: false
+                    default: false
+            pin-channels:
+                by-release-type:
+                    beta: ["beta"]
+                    release: ["release"]
+                    esr.*: ["esr", "esr-next"]
+                    default: []
+        treeherder:
+            platform: firefox-release/opt
+            symbol: Rel(BSFx)
+            tier: 1
+            kind: build
+    devedition:
+        description: Schedule Devedition publishing in balrog
+        name: release-devedition_schedule_publishing_in_balrog
+        shipping-product: devedition
+        worker:
+            product: devedition
+            publish-rules: [10]
+            background-rate:
+                by-release-type:
+                    beta: null
+                    default: null
+            force-fallback-mapping-update:
+                by-release-type:
+                    beta: true
+                    default: false
+            pin-channels: ["aurora"]
+        treeherder:
+            platform: devedition-release/opt
+            symbol: Rel(BSDev)
+            tier: 1
+            kind: build
diff --git a/taskcluster/ci/release-balrog-submit-toplevel/kind.yml b/taskcluster/ci/release-balrog-submit-toplevel/kind.yml
new file mode 100644
index 0000000000..dc1155df9d
--- /dev/null
+++ b/taskcluster/ci/release-balrog-submit-toplevel/kind.yml
@@ -0,0 +1,79 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release:run_on_releases
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.scriptworker:add_balrog_scopes
+    - gecko_taskgraph.transforms.balrog_toplevel:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    run-on-projects: []  # to make sure this never runs in CI
+    shipping-phase: promote
+    worker-type: balrog
+    worker:
+        implementation: balrog
+        balrog-action: v2-submit-toplevel
+        require-mirrors: true
+        archive-domain:
+            by-release-level:
+                production: archive.mozilla.org
+                staging: ftp.stage.mozaws.net
+        download-domain:
+            by-release-level:
+                production: download.mozilla.org
+                staging: dev.bouncer.nonprod.webservices.mozgcp.net
+    whats-new-config: browser/config/whats_new_page.yml
+
+jobs:
+    firefox:
+        name: submit-toplevel-firefox-release-to-balrog
+        description: Submit toplevel Firefox release to balrog
+        shipping-product: firefox
+        worker:
+            product: firefox
+            channel-names:
+                by-release-type:
+                    beta: ["beta", "beta-localtest", "beta-cdntest"]
+                    release(-rc)?: ["release", "release-localtest", "release-cdntest"]
+                    esr.*: ["esr", "esr-localtest", "esr-cdntest", "esr-localtest-next", "esr-cdntest-next"]
+                    default: []
+            rules-to-update:
+                by-release-type:
+                    beta: ["firefox-beta-cdntest", "firefox-beta-localtest"]
+                    release(-rc)?: ["firefox-release-cdntest", "firefox-release-localtest"]
+                    esr115: ["firefox-esr115-cdntest", "firefox-esr115-localtest"]
+                    default: []
+            pin-channels:
+                by-release-type:
+                    beta: ["beta-localtest", "beta-cdntest"]
+                    release(-rc)?: ["release-localtest", "release-cdntest"]
+                    esr.*: ["esr-localtest", "esr-cdntest", "esr-localtest-next", "esr-cdntest-next"]
+                    default: []
+            platforms: ["linux", "linux64", "macosx64", "win32", "win64", "win64-aarch64"]
+        treeherder:
+            platform: firefox-release/opt
+            symbol: Rel(BPFx)
+            tier: 1
+            kind: build
+
+    devedition:
+        name: submit-toplevel-devedition-release-to-balrog
+        description: submit toplevel Devedition release to balrog
+        shipping-product: devedition
+        run-on-releases: [beta]
+        worker:
+            product: devedition
+            channel-names: ["aurora", "aurora-localtest", "aurora-cdntest"]
+            rules-to-update: ["devedition-cdntest", "devedition-localtest"]
+            pin-channels: ["aurora-localtest", "aurora-cdntest"]
+            platforms: ["linux", "linux64", "macosx64", "win32", "win64", "win64-aarch64"]
+        treeherder:
+            platform: devedition-release/opt
+            symbol: Rel(BPDev)
+            tier: 1
+            kind: build
diff --git a/taskcluster/ci/release-beetmover-push-to-release/kind.yml b/taskcluster/ci/release-beetmover-push-to-release/kind.yml
new file mode 100644
index 0000000000..affc0f2c77
--- /dev/null
+++ b/taskcluster/ci/release-beetmover-push-to-release/kind.yml
@@ -0,0 +1,33 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.beetmover_push_to_release:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - release-generate-checksums-beetmover
+    - post-update-verify-dummy
+
+job-defaults:
+    run-on-projects: []
+    shipping-phase: push
+    worker:
+        max-run-time: 2700
+
+jobs:
+    devedition-push-to-release:
+        name: devedition_push_to_release
+        product: devedition
+        shipping-product: devedition
+        treeherder-platform: devedition-release/opt
+
+    firefox-push-to-release:
+        name: firefox_push_to_release
+        product: firefox
+        shipping-product: firefox
+        treeherder-platform: firefox-release/opt
diff --git a/taskcluster/ci/release-beetmover-signed-langpacks-checksums/kind.yml b/taskcluster/ci/release-beetmover-signed-langpacks-checksums/kind.yml
new file mode 100644
index 0000000000..473f711a2a
--- /dev/null
+++ b/taskcluster/ci/release-beetmover-signed-langpacks-checksums/kind.yml
@@ -0,0 +1,23 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.beetmover_langpack_checksums
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-beetmover-signed-langpacks
+
+jobs:
+    release-beetmover-signed-langpacks-checksums:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: promote
+        attributes:
+            artifact_prefix: public
+            artifact_map: taskcluster/gecko_taskgraph/manifests/firefox_candidates_checksums.yml
diff --git a/taskcluster/ci/release-beetmover-signed-langpacks/kind.yml b/taskcluster/ci/release-beetmover-signed-langpacks/kind.yml
new file mode 100644
index 0000000000..63bdcfe921
--- /dev/null
+++ b/taskcluster/ci/release-beetmover-signed-langpacks/kind.yml
@@ -0,0 +1,40 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.release_beetmover_signed_addons
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - build-signing
+    - shippable-l10n-signing
+
+only-for-attributes:
+    - nightly
+    - shippable
+
+only-for-build-platforms:
+    - linux64-shippable/opt
+    - linux64-devedition/opt
+
+jobs:
+    release-beetmover-signed-langpacks:
+        description: Beetmover submission for platform-independent langpacks {locales} in {platform} directory
+        from-deps:
+            group-by: single-with-filters
+        worker-type:
+            by-release-level:
+                production: scriptworker-k8s/gecko-3-beetmover
+                staging: scriptworker-k8s/gecko-1-beetmover
+        run-on-projects: []
+        shipping-phase: promote
+        attributes:
+            artifact_map:
+                by-release-type:
+                    beta|release.*|esr.*: taskcluster/gecko_taskgraph/manifests/firefox_candidates.yml
+                    default: taskcluster/gecko_taskgraph/manifests/firefox_nightly.yml
diff --git a/taskcluster/ci/release-beetmover-source-checksums/kind.yml b/taskcluster/ci/release-beetmover-source-checksums/kind.yml
new file mode 100644
index 0000000000..d7a5bf828f
--- /dev/null
+++ b/taskcluster/ci/release-beetmover-source-checksums/kind.yml
@@ -0,0 +1,23 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.beetmover_source_checksums
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-source-checksums-signing
+
+jobs:
+    release-beetmover-source-checksums:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: promote
+        attributes:
+            artifact_prefix: public
+            artifact_map: taskcluster/gecko_taskgraph/manifests/source_checksums.yml
diff --git a/taskcluster/ci/release-bouncer-aliases/kind.yml b/taskcluster/ci/release-bouncer-aliases/kind.yml
new file mode 100644
index 0000000000..d1ce834c48
--- /dev/null
+++ b/taskcluster/ci/release-bouncer-aliases/kind.yml
@@ -0,0 +1,95 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.bouncer_aliases:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - release-bouncer-check
+
+job-defaults:
+    description: Update bouncer aliases job
+    worker-type: bouncer
+    worker:
+        implementation: bouncer-aliases
+    scopes:
+        by-release-level:
+            production:
+                - project:releng:bouncer:action:aliases
+                - project:releng:bouncer:server:production
+            staging:
+                - project:releng:bouncer:action:aliases
+                - project:releng:bouncer:server:staging
+    run-on-projects: []
+    shipping-phase: ship
+    treeherder:
+        symbol: Rel(BncAlias)
+        kind: test
+        tier: 1
+
+jobs:
+    devedition:
+        bouncer-products-per-alias:
+            firefox-devedition-latest-ssl: installer-ssl
+            firefox-devedition-latest: installer
+            firefox-devedition-stub: stub-installer
+            firefox-devedition-msi-latest-ssl: msi
+            firefox-devedition-msix-latest-ssl: msix
+        shipping-product: devedition
+        treeherder:
+            platform: devedition-release/opt
+
+    firefox:
+        bouncer-products-per-alias:
+            by-release-type:
+                beta:
+                    firefox-beta-latest-ssl: installer-ssl
+                    firefox-beta-latest: installer
+                    firefox-beta-stub: stub-installer
+                    firefox-beta-msi-latest-ssl: msi
+                    firefox-beta-msix-latest-ssl: msix
+                    firefox-beta-pkg-latest-ssl: pkg
+                    firefox-beta-langpack-latest-ssl: langpack
+                release.*:
+                    firefox-latest-ssl: installer-ssl
+                    firefox-latest: installer
+                    firefox-stub: stub-installer
+                    firefox-msi-latest-ssl: msi
+                    firefox-msix-latest-ssl: msix
+                    firefox-pkg-latest-ssl: pkg
+                    firefox-langpack-latest-ssl: langpack
+                esr115:
+                    # when there is one ESR branch both sets of aliases work
+                    # when there are two ESR branches ...
+                    # ... these always point to the older branch
+                    firefox-esr-latest-ssl: installer-ssl
+                    firefox-esr-latest: installer
+                    firefox-esr-msi-latest-ssl: msi
+                    firefox-esr-msix-latest-ssl: msix
+                    firefox-esr-pkg-latest-ssl: pkg
+                    firefox-esr-langpack-latest-ssl: langpack
+                esrXXX:  # XXX - to change when we branch next ESR
+                    firefox-esr-next-latest-ssl: installer-ssl
+                    firefox-esr-next-latest: installer
+                    firefox-esr-next-msi-latest-ssl: msi
+                    firefox-esr-next-msix-latest-ssl: msix
+                    firefox-esr-next-pkg-latest-ssl: pkg
+                    firefox-esr-next-langpack-latest-ssl: langpack
+                default: {}
+        partner-bouncer-products-per-alias:
+            by-release-type:
+                beta:
+                    partner-firefox-beta-PARTNER-latest: installer
+                    partner-firefox-beta-PARTNER-stub: stub-installer
+                release.*:
+                    partner-firefox-release-PARTNER-latest: installer
+                    partner-firefox-release-PARTNER-stub: stub-installer
+                default: {}
+        shipping-product: firefox
+        treeherder:
+            platform: firefox-release/opt
diff --git a/taskcluster/ci/release-bouncer-check/kind.yml b/taskcluster/ci/release-bouncer-check/kind.yml
new file mode 100644
index 0000000000..7b7133ffd5
--- /dev/null
+++ b/taskcluster/ci/release-bouncer-check/kind.yml
@@ -0,0 +1,76 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - release-beetmover-push-to-release
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.bouncer_check:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: release-bouncer-check
+    description: release bouncer check
+    run-on-projects: []  # to make sure this never runs as part of CI
+    shipping-phase: push
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1200
+        docker-image: {in-tree: "update-verify"}
+    run:
+        sparse-profile: mozharness
+        extra-config:
+            by-release-level:
+                production:
+                    bouncer_prefix: "https://download.mozilla.org/"
+                staging:
+                    # This is the list on-change locales, excluding ja/ja-JP-mac
+                    # which bouncer_check doesn't support.
+                    locales: ['en-US', 'en-CA', 'he', 'it']
+                    bouncer_prefix: "https://dev.bouncer.nonprod.webservices.mozgcp.net/"
+                    cdn_urls:
+                        - ftp.stage.mozaws.net
+
+    attributes:
+        build_platform: linux64
+        build_type: opt
+    treeherder:
+        symbol: Rel(BncChk)
+        kind: test
+        tier: 1
+
+jobs:
+    firefox:
+        shipping-product: firefox
+        index:
+            product: firefox
+            job-name: firefox-release-bouncer-check
+        run:
+            config:
+                by-release-type:
+                    beta:
+                        - releases/bouncer_firefox_beta.py
+                    release:
+                        - releases/bouncer_firefox_release.py
+                    esr.*:
+                        - releases/bouncer_firefox_esr.py
+                    default:
+                        - releases/bouncer_firefox_beta.py
+        treeherder:
+            platform: firefox-release/opt
+
+    devedition:
+        shipping-product: devedition
+        index:
+            product: devedition
+            job-name: devedition-release-bouncer-check
+        run:
+            config:
+                - releases/bouncer_firefox_devedition.py
+        treeherder:
+            platform: devedition-release/opt
diff --git a/taskcluster/ci/release-bouncer-sub/kind.yml b/taskcluster/ci/release-bouncer-sub/kind.yml
new file mode 100644
index 0000000000..131b41b0a7
--- /dev/null
+++ b/taskcluster/ci/release-bouncer-sub/kind.yml
@@ -0,0 +1,58 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release:run_on_releases
+    - gecko_taskgraph.transforms.bouncer_submission:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    description: release bouncer submission job
+    worker-type: bouncer
+    worker:
+        implementation: bouncer-submission
+    scopes:
+        by-release-level:
+            production:
+                - project:releng:bouncer:action:submission
+                - project:releng:bouncer:server:production
+            staging:
+                - project:releng:bouncer:action:submission
+                - project:releng:bouncer:server:staging
+    run-on-projects: []
+    shipping-phase: promote
+    locales-file: browser/locales/shipped-locales
+    treeherder:
+        symbol: Rel(BncSub)
+        kind: test
+        tier: 1
+
+jobs:
+    devedition:
+        bouncer-platforms: ['linux', 'linux64', 'osx', 'win', 'win64', 'win64-aarch64']
+        bouncer-products: ['complete-mar', 'installer', 'installer-ssl', 'partial-mar', 'stub-installer', 'msi', 'msix']
+        shipping-product: devedition
+        treeherder:
+            platform: devedition-release/opt
+
+    firefox:
+        bouncer-platforms: ['linux', 'linux64', 'osx', 'win', 'win64', 'win64-aarch64']
+        bouncer-products:
+            by-release-type:
+                default: ['complete-mar', 'installer', 'installer-ssl', 'partial-mar', 'stub-installer', 'msi', 'msix', 'pkg', 'langpack']
+                esr.*: ['complete-mar', 'installer', 'installer-ssl', 'partial-mar', 'msi', 'msix', 'pkg', 'langpack']
+        shipping-product: firefox
+        treeherder:
+            platform: firefox-release/opt
+
+    firefox-rc:
+        bouncer-platforms: ['linux', 'linux64', 'osx', 'win', 'win64', 'win64-aarch64']
+        bouncer-products: ['complete-mar-candidates', 'partial-mar-candidates']
+        shipping-product: firefox
+        run-on-releases: ['release-rc']
+        treeherder:
+            symbol: Rel(BncSub-RC)
+            platform: firefox-release/opt
diff --git a/taskcluster/ci/release-early-tagging/kind.yml b/taskcluster/ci/release-early-tagging/kind.yml
new file mode 100644
index 0000000000..9b194fb441
--- /dev/null
+++ b/taskcluster/ci/release-early-tagging/kind.yml
@@ -0,0 +1,46 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_version_bump:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    description: Release Promotion version tag for buildN
+    run-on-projects: []
+    shipping-phase: promote
+    worker-type: tree
+    worker:
+        implementation: treescript
+        tags: ['buildN']
+        bump: false
+        dontbuild: true
+        push:
+            by-project:
+                mozilla-(beta|release|esr.*): true
+                maple: true
+                default: false
+
+
+jobs:
+    firefox:
+        name: firefox-tag-buildN
+        shipping-product: firefox
+        treeherder:
+            platform: firefox-release/opt
+            symbol: Rel(TagBuild)
+            tier: 1
+            kind: build
+
+    devedition:
+        name: devedition-tag-buildN
+        shipping-product: devedition
+        treeherder:
+            platform: devedition-release/opt
+            symbol: Rel(TagBuild)
+            tier: 1
+            kind: build
diff --git a/taskcluster/ci/release-eme-free-repack-beetmover-checksums/kind.yml b/taskcluster/ci/release-eme-free-repack-beetmover-checksums/kind.yml
new file mode 100644
index 0000000000..c75a85ac54
--- /dev/null
+++ b/taskcluster/ci/release-eme-free-repack-beetmover-checksums/kind.yml
@@ -0,0 +1,24 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.beetmover_emefree_checksums
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-eme-free-repack-beetmover
+
+only-for-build-platforms:
+    - macosx64-shippable/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+
+jobs:
+    release-eme-free-repack-beetmover-checksums:
+        from-deps: {}
+        shipping-phase: promote
diff --git a/taskcluster/ci/release-eme-free-repack-beetmover/kind.yml b/taskcluster/ci/release-eme-free-repack-beetmover/kind.yml
new file mode 100644
index 0000000000..7a33d0fb69
--- /dev/null
+++ b/taskcluster/ci/release-eme-free-repack-beetmover/kind.yml
@@ -0,0 +1,26 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.beetmover_repackage_partner
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-eme-free-repack-repackage-signing
+
+only-for-build-platforms:
+    - macosx64-shippable/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+
+jobs:
+    release-eme-free-repack-beetmover:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: promote
+        partner-path: "{platform}-EME-free/{locale}"
diff --git a/taskcluster/ci/release-eme-free-repack-mac-notarization/kind.yml b/taskcluster/ci/release-eme-free-repack-mac-notarization/kind.yml
new file mode 100644
index 0000000000..ff04daf61d
--- /dev/null
+++ b/taskcluster/ci/release-eme-free-repack-mac-notarization/kind.yml
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.mac_notarization
+    - gecko_taskgraph.transforms.chunk_partners
+    - gecko_taskgraph.transforms.partner_signing
+    - gecko_taskgraph.transforms.signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-eme-free-repack-mac-signing
+
+only-for-build-platforms:
+    - macosx64-shippable/opt
+
+jobs:
+    release-eme-free-repack-mac-notarization:
+        from-deps:
+            group-by: partner-repack-ids
+            copy-attributes: true
+        shipping-product: firefox
+        shipping-phase: promote
+        max-run-time: 1800
+        copy-repack-ids: true
diff --git a/taskcluster/ci/release-eme-free-repack-mac-signing/kind.yml b/taskcluster/ci/release-eme-free-repack-mac-signing/kind.yml
new file mode 100644
index 0000000000..84d0e17dd1
--- /dev/null
+++ b/taskcluster/ci/release-eme-free-repack-mac-signing/kind.yml
@@ -0,0 +1,28 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.chunk_partners
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.partner_signing
+    - gecko_taskgraph.transforms.signing
+    - gecko_taskgraph.transforms.hardened_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-eme-free-repack
+
+only-for-build-platforms:
+    - macosx64-shippable/opt
+
+jobs:
+    release-eme-free-repack-mac-signing:
+        from-deps:
+            group-by: partner-repack-ids
+        shipping-product: firefox
+        shipping-phase: promote
+        repacks-per-chunk: 5
diff --git a/taskcluster/ci/release-eme-free-repack-repackage-signing/kind.yml b/taskcluster/ci/release-eme-free-repack-repackage-signing/kind.yml
new file mode 100644
index 0000000000..c369761202
--- /dev/null
+++ b/taskcluster/ci/release-eme-free-repack-repackage-signing/kind.yml
@@ -0,0 +1,24 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage_signing_partner
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-eme-free-repack-repackage
+
+only-for-build-platforms:
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - macosx64-shippable/opt
+
+jobs:
+    release-eme-free-repack-repackage-signing:
+        from-deps:
+            group-by: single-with-filters
diff --git a/taskcluster/ci/release-eme-free-repack-repackage/kind.yml b/taskcluster/ci/release-eme-free-repack-repackage/kind.yml
new file mode 100644
index 0000000000..78bc18fe6d
--- /dev/null
+++ b/taskcluster/ci/release-eme-free-repack-repackage/kind.yml
@@ -0,0 +1,60 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.repackage_set_upstream_mac_kind
+    - gecko_taskgraph.transforms.chunk_partners
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage_partner
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-eme-free-repack
+    - release-eme-free-repack-mac-signing
+    - release-eme-free-repack-mac-notarization
+    - toolchain
+
+only-for-build-platforms:
+    - macosx64-shippable/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+
+jobs:
+    release-eme-free-repack-repackage:
+        from-deps:
+            group-by: single-with-filters
+        upstream-mac-kind:
+            by-build-type:
+                debug: release-eme-free-repack-mac-signing
+                default:
+                    by-project:
+                        mozilla-(central|beta|release|esr.*): release-eme-free-repack-mac-notarization
+                        default: release-eme-free-repack-mac-signing
+        mozharness:
+            config:
+                by-build-platform:
+                    macosx64-.*:
+                        - repackage/base.py
+                        - repackage/osx_partner.py
+                    win32-.*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win32_partner.py
+                    win64-(?!aarch64).*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win64_partner.py
+                    win64-aarch64-.*:
+                        - repackage/base.py
+                        - repackage/win64-aarch64_sfx_stub.py
+                        - repackage/win64_partner.py
+        package-formats:
+            by-build-platform:
+                macosx64\b.*: [dmg]
+                win32\b.*: [installer]
+                win64\b.*: [installer]
diff --git a/taskcluster/ci/release-eme-free-repack/kind.yml b/taskcluster/ci/release-eme-free-repack/kind.yml
new file mode 100644
index 0000000000..cc3e85071b
--- /dev/null
+++ b/taskcluster/ci/release-eme-free-repack/kind.yml
@@ -0,0 +1,81 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.partner_repack:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - build-signing
+    - build-mac-signing
+    - build-mac-notarization
+    - shippable-l10n-signing
+    - shippable-l10n-mac-signing
+    - shippable-l10n-mac-notarization
+
+job-defaults:
+    name: eme-free-repack
+    description: Release Promotion eme-free repacks
+    run-on-projects: []  # to make sure this never runs as part of CI
+    shipping-product: firefox
+    shipping-phase: promote
+    worker-type: b-linux-gcp
+    worker:
+        docker-image:
+            in-tree: "partner-repack"
+        chain-of-trust: true
+        max-run-time: 7200
+    run:
+        using: mozharness
+        config:
+            - partner_repacks/release_mozilla-release_desktop.py
+        script: mozharness/scripts/desktop_partner_repacks.py
+        job-script: taskcluster/scripts/builder/repackage.sh
+        tooltool-downloads: false
+    extra:
+        limit-locales:
+            by-release-level:
+                staging: true
+                production: false
+
+jobs:
+    macosx64-shippable:
+        treeherder:
+            symbol: EME
+            platform: macosx64/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: macosx64-shippable
+            build_type: opt
+            artifact_prefix: releng/partner
+            shippable: true
+
+    win32-shippable:
+        treeherder:
+            symbol: EME
+            platform: win32/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win32-shippable
+            build_type: opt
+            artifact_prefix: releng/partner
+            shippable: true
+
+    win64-shippable:
+        treeherder:
+            symbol: EME
+            platform: win64/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win64-shippable
+            build_type: opt
+            artifact_prefix: releng/partner
+            shippable: true
diff --git a/taskcluster/ci/release-final-verify/kind.yml b/taskcluster/ci/release-final-verify/kind.yml
new file mode 100644
index 0000000000..b1319665cd
--- /dev/null
+++ b/taskcluster/ci/release-final-verify/kind.yml
@@ -0,0 +1,47 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - release-bouncer-check
+    - release-update-verify-config
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.final_verify:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: final-verify
+    run-on-projects: []  # to make sure this never runs as part of CI
+    worker-type: b-linux-gcp
+    worker:
+        docker-image:
+            in-tree: "update-verify"
+        max-run-time: 7200
+        retry-exit-status: [1]
+
+
+jobs:
+    firefox:
+        description: final verify
+        shipping-phase: push
+        shipping-product: firefox
+        treeherder:
+            platform: firefox-release/opt
+            kind: test
+            symbol: Rel(FV)
+            tier: 1
+
+    devedition:
+        description: final verify
+        shipping-phase: push
+        shipping-product: devedition
+        treeherder:
+            platform: devedition-release/opt
+            kind: test
+            symbol: Rel(FV)
+            tier: 1
diff --git a/taskcluster/ci/release-flatpak-push/kind.yml b/taskcluster/ci/release-flatpak-push/kind.yml
new file mode 100644
index 0000000000..27f5ebf3ec
--- /dev/null
+++ b/taskcluster/ci/release-flatpak-push/kind.yml
@@ -0,0 +1,42 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release:run_on_releases
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_flatpak_push:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - release-flatpak-repackage
+
+job-defaults:
+    description: Pushes Flatpaks onto Flathub
+    run-on-projects: []  # to make sure this never runs as part of CI
+    run-on-releases: [beta, release, release-rc]
+    shipping-phase: ship
+    treeherder:
+        platform: linux64/opt
+        kind: build
+        tier: 2
+    worker-type:
+        by-release-level:
+            production: scriptworker-k8s/gecko-3-pushflatpak
+            staging: scriptworker-k8s/gecko-1-pushflatpak
+    worker:
+        implementation: push-flatpak
+        channel:
+            by-release-type:
+                beta: beta
+                release: stable
+                default: mock
+
+jobs:
+    firefox:
+        shipping-product: firefox
+        flathub-scope: "flathub:firefox"
+        treeherder:
+            symbol: Flatpak(push)
diff --git a/taskcluster/ci/release-flatpak-repackage/kind.yml b/taskcluster/ci/release-flatpak-repackage/kind.yml
new file mode 100644
index 0000000000..ecc86bf4ab
--- /dev/null
+++ b/taskcluster/ci/release-flatpak-repackage/kind.yml
@@ -0,0 +1,66 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release:run_on_releases
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_flatpak_repackage:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - post-beetmover-dummy
+    - post-langpack-dummy
+
+job-defaults:
+    description: Generates flatpak by reackaging the existing tar.bz2
+    run-on-projects: []  # to make sure this never runs as part of CI
+    run-on-releases: [beta, release, release-rc]
+    shipping-phase: promote
+    scopes: []
+    treeherder:
+        platform: linux64-shippable/opt
+        kind: build
+        tier: 2
+    worker-type: b-linux-gcp
+    worker:
+        implementation: docker-worker
+        os: linux
+        max-run-time: 7200
+        docker-image: {in-tree: firefox-flatpak}
+        artifacts:
+            - name: public/build
+              type: directory
+              path: /home/worker/artifacts/
+        command:
+            - /bin/bash
+            - -cx
+            - ./runme.sh
+        env:
+            VERSION: "{release_config[version]}"
+            BUILD_NUMBER: "{release_config[build_number]}"
+            CANDIDATES_DIR:
+                by-release-level:
+                    staging:
+                        https://ftp.stage.mozaws.net/pub/{task[shipping-product]}/candidates
+                    production:
+                        https://archive.mozilla.org/pub/{task[shipping-product]}/candidates
+            LC_ALL: C.UTF-8
+            LANG: C.UTF-8
+            L10N_CHANGESETS: "{config_params[head_repository]}/raw-file/{config_params[head_rev]}/browser/locales/l10n-changesets.json"
+            FLATPAK_BRANCH:
+                by-project:
+                    mozilla-release: stable
+                    default: beta
+        chain-of-trust: true
+
+jobs:
+    firefox:
+        shipping-product: firefox
+        attributes:
+            build_platform: linux64-shippable
+            build_type: opt
+        treeherder:
+            symbol: Flatpak(r)
diff --git a/taskcluster/ci/release-generate-checksums-beetmover/kind.yml b/taskcluster/ci/release-generate-checksums-beetmover/kind.yml
new file mode 100644
index 0000000000..ca998ea2f2
--- /dev/null
+++ b/taskcluster/ci/release-generate-checksums-beetmover/kind.yml
@@ -0,0 +1,21 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.release_generate_checksums_beetmover
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-generate-checksums-signing
+
+jobs:
+    release-generate-checksums-beetmover:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: promote
+        attributes:
+            artifact_map: taskcluster/gecko_taskgraph/manifests/release_checksums.yml
diff --git a/taskcluster/ci/release-generate-checksums-signing/kind.yml b/taskcluster/ci/release-generate-checksums-signing/kind.yml
new file mode 100644
index 0000000000..a86b4c8dc5
--- /dev/null
+++ b/taskcluster/ci/release-generate-checksums-signing/kind.yml
@@ -0,0 +1,18 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - release-generate-checksums
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.release_generate_checksums_signing
+    - gecko_taskgraph.transforms.task
+
+jobs:
+    release-generate-checksums-signing:
+        from-deps: {}
+        shipping-phase: promote
diff --git a/taskcluster/ci/release-generate-checksums/kind.yml b/taskcluster/ci/release-generate-checksums/kind.yml
new file mode 100644
index 0000000000..71018c8cef
--- /dev/null
+++ b/taskcluster/ci/release-generate-checksums/kind.yml
@@ -0,0 +1,86 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - beetmover-source
+    - post-beetmover-checksums-dummy
+    - release-beetmover-signed-langpacks
+
+transforms:
+    - gecko_taskgraph.transforms.build:transforms
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_generate_checksums:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: generate-checksums
+    description: generates checksums
+    run-on-projects: []  # to make sure this never runs as part of CI
+    shipping-phase: promote
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1200
+        artifacts:
+            - name: public/build/SHA256SUMMARY
+              path: /builds/worker/SHA256SUMMARY
+              type: file
+            - name: public/build/SHA256SUMS
+              path: /builds/worker/SHA256SUMS
+              type: file
+            - name: public/build/SHA512SUMMARY
+              path: /builds/worker/SHA512SUMMARY
+              type: file
+            - name: public/build/SHA512SUMS
+              path: /builds/worker/SHA512SUMS
+              type: file
+    run:
+        using: mozharness
+        config: []  # See extra-config below
+        actions: [create-virtualenv, collect-individual-checksums, create-big-checksums, create-summary]
+        options:
+            - "version={version}"
+            - "build-number={build_number}"
+        script: "mozharness/scripts/release/generate-checksums.py"
+    treeherder:
+        symbol: Rel(GenChcks)
+        kind: test
+        tier: 1
+
+jobs:
+    firefox:
+        shipping-product: firefox
+        attributes:
+            build_platform: firefox-release
+            build_type: opt
+        run:
+            extra-config:
+                by-release-level:
+                    production:
+                        stage_product: "firefox"
+                        bucket_name: "moz-fx-productdelivery-pr-38b5-productdelivery"
+                    staging:
+                        stage_product: "firefox"
+                        bucket_name: "moz-fx-productdelivery-no-7d6a-productdelivery"
+        treeherder:
+            platform: firefox-release/opt
+
+    devedition:
+        shipping-product: devedition
+        attributes:
+            build_platform: devedition-release
+            build_type: opt
+        run:
+            extra-config:
+                by-release-level:
+                    production:
+                        stage_product: "devedition"
+                        bucket_name: "moz-fx-productdelivery-pr-38b5-productdelivery"
+                    staging:
+                        stage_product: "devedition"
+                        bucket_name: "moz-fx-productdelivery-no-7d6a-productdelivery"
+        treeherder:
+            platform: devedition-release/opt
diff --git a/taskcluster/ci/release-mark-as-shipped/kind.yml b/taskcluster/ci/release-mark-as-shipped/kind.yml
new file mode 100644
index 0000000000..c9f6c82973
--- /dev/null
+++ b/taskcluster/ci/release-mark-as-shipped/kind.yml
@@ -0,0 +1,40 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_mark_as_shipped:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - release-balrog-scheduling
+    - release-bouncer-aliases
+    - release-version-bump
+
+job-defaults:
+    description: mark release as shipped in Ship-It
+    worker-type: shipit
+    worker:
+        implementation: shipit-shipped
+    scopes:
+        by-release-level:
+            production:
+                - project:releng:ship-it:server:production
+                - project:releng:ship-it:action:mark-as-shipped
+            staging:
+                - project:releng:ship-it:server:staging
+                - project:releng:ship-it:action:mark-as-shipped
+    run-on-projects: []
+    shipping-phase: ship
+
+jobs:
+    firefox:
+        name: release-firefox_mark_as_shipped
+        shipping-product: firefox
+
+    devedition:
+        name: release-devedition_mark_as_shipped
+        shipping-product: devedition
diff --git a/taskcluster/ci/release-msix-push/kind.yml b/taskcluster/ci/release-msix-push/kind.yml
new file mode 100644
index 0000000000..3009c74df2
--- /dev/null
+++ b/taskcluster/ci/release-msix-push/kind.yml
@@ -0,0 +1,45 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release:run_on_releases
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_msix_push:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - repackage-shippable-l10n-msix
+
+job-defaults:
+    description: Pushes msix archives to Microsoft Store
+    run-on-projects: []  # to make sure this never runs as part of CI
+    run-on-releases: [beta, release, release-rc]
+    shipping-phase: ship  # note override in transform
+    treeherder:
+        platform: win32-shippable/opt
+        kind: build
+        tier: 2
+    worker-type:
+        by-release-level:
+            production: scriptworker-k8s/gecko-3-pushmsix
+            staging: scriptworker-k8s/gecko-1-pushmsix
+    worker:
+        implementation: push-msix
+        channel:
+            by-release-type:
+                beta: beta
+                release.*: release
+                default: mock
+        publish-mode:
+            by-release-type:
+                beta: Immediate
+                default: Manual
+
+jobs:
+    firefox:
+        shipping-product: firefox
+        treeherder:
+            symbol: MSIX(push)
diff --git a/taskcluster/ci/release-notify-av-announce/kind.yml b/taskcluster/ci/release-notify-av-announce/kind.yml
new file mode 100644
index 0000000000..45a0e5db53
--- /dev/null
+++ b/taskcluster/ci/release-notify-av-announce/kind.yml
@@ -0,0 +1,40 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_notifications:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - post-beetmover-dummy
+
+job-defaults:
+    name: notify-av-announce
+    description: Sends email to antivirus vendors telling them that the release is available for scanning.
+    run-on-projects: []
+    shipping-phase: push
+    worker-type: succeed
+    notifications:
+        # !t is a custom format option that calls .title() on the string.
+        subject: "{task[shipping-product]!t} {release_config[version]} build{release_config[build_number]} release"
+        message: |
+            Company Name: Mozilla
+            Contact Department: Release Engineering
+            Contact email address: release@mozilla.com
+            Product information: {task[shipping-product]} {release_config[version]}
+            Product location: https://releases.mozilla.org/pub/{task[shipping-product]}/candidates/{release_config[version]}-candidates/build{release_config[build_number]}/
+        emails:
+            by-project:
+                mozilla-(beta|release|esr.*): ["av-vendor-release-announce@mozilla.org"]
+                try: ["{config[params][owner]}"]
+                default: []
+
+jobs:
+    firefox:
+        shipping-product: firefox
+    devedition:
+        shipping-product: devedition
diff --git a/taskcluster/ci/release-notify-promote/kind.yml b/taskcluster/ci/release-notify-promote/kind.yml
new file mode 100644
index 0000000000..9fcc8a3262
--- /dev/null
+++ b/taskcluster/ci/release-notify-promote/kind.yml
@@ -0,0 +1,36 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_notifications:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - post-beetmover-dummy
+    - release-generate-checksums-beetmover
+    - release-bouncer-sub
+
+job-defaults:
+    name: notify-release-drivers-promote
+    description: Sends email to release-drivers telling release was promoted.
+    run-on-projects: []
+    shipping-phase: promote
+    worker-type: succeed
+    notifications:
+        subject: "{task[shipping-product]} {release_config[version]} build{release_config[build_number]}/{config[params][project]} is in the candidates directory"
+        message: "{task[shipping-product]} {release_config[version]} build{release_config[build_number]}/{config[params][project]} is in the candidates directory"
+        emails:
+            by-project:
+                mozilla-(beta|release|esr.*): ["release-signoff@mozilla.org"]
+                try: ["{config[params][owner]}"]
+                default: []
+
+jobs:
+    firefox:
+        shipping-product: firefox
+    devedition:
+        shipping-product: devedition
diff --git a/taskcluster/ci/release-notify-push/kind.yml b/taskcluster/ci/release-notify-push/kind.yml
new file mode 100644
index 0000000000..1b641d383e
--- /dev/null
+++ b/taskcluster/ci/release-notify-push/kind.yml
@@ -0,0 +1,34 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_notifications:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - release-beetmover-push-to-release
+
+job-defaults:
+    name: notify-release-drivers-push
+    description: Sends email to release-drivers telling release was pushed.
+    run-on-projects: []
+    shipping-phase: push
+    worker-type: succeed
+    notifications:
+        subject: "{task[shipping-product]} {release_config[version]} build{release_config[build_number]}/{config[params][project]} has been pushed to cdntest"
+        message: "{task[shipping-product]} {release_config[version]} build{release_config[build_number]}/{config[params][project]} has been pushed to cdntest"
+        emails:
+            by-project:
+                mozilla-(beta|release|esr.*): ["release-signoff@mozilla.org"]
+                try: ["{config[params][owner]}"]
+                default: []
+
+jobs:
+    firefox:
+        shipping-product: firefox
+    devedition:
+        shipping-product: devedition
diff --git a/taskcluster/ci/release-notify-ship/kind.yml b/taskcluster/ci/release-notify-ship/kind.yml
new file mode 100644
index 0000000000..6f0c0f7627
--- /dev/null
+++ b/taskcluster/ci/release-notify-ship/kind.yml
@@ -0,0 +1,41 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_notifications:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - release-balrog-scheduling
+    - release-bouncer-aliases
+    - release-version-bump
+    - release-mark-as-shipped
+
+job-defaults:
+    name: notify-release-drivers-ship
+    description: Sends email to release-drivers telling release was shipped.
+    run-on-projects: []
+    shipping-phase: ship
+    worker-type: succeed
+    notifications:
+        emails:
+            by-project:
+                mozilla-(beta|release|esr.*): ["release-signoff@mozilla.org"]
+                try: ["{config[params][owner]}"]
+                default: []
+
+jobs:
+    firefox:
+        shipping-product: firefox
+        notifications:
+            subject: "{task[shipping-product]} {release_config[version]} build{release_config[build_number]}/{config[params][project]} updates are ready for signoff in Balrog!"
+            message: "{task[shipping-product]} {release_config[version]} build{release_config[build_number]}/{config[params][project]} updates are ready for signoff in Balrog!"
+    devedition:
+        shipping-product: devedition
+        notifications:
+            subject: "{task[shipping-product]} {release_config[version]} build{release_config[build_number]}/{config[params][project]} updates are ready for signoff in Balrog!"
+            message: "{task[shipping-product]} {release_config[version]} build{release_config[build_number]}/{config[params][project]} updates are ready for signoff in Balrog!"
diff --git a/taskcluster/ci/release-notify-started/kind.yml b/taskcluster/ci/release-notify-started/kind.yml
new file mode 100644
index 0000000000..004665789d
--- /dev/null
+++ b/taskcluster/ci/release-notify-started/kind.yml
@@ -0,0 +1,32 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_started:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: notify-release-drivers-started
+    description: Sends email to release-drivers telling release was started.
+    run-on-projects: []
+    shipping-phase: promote
+    worker-type: b-linux-gcp
+    worker:
+        docker-image: {in-tree: "debian12-base"}
+        max-run-time: 600
+    emails:
+        by-project:
+            mozilla-(beta|release|esr.*): ["release-signoff@mozilla.org"]
+            try: ["{config[params][owner]}"]
+            default: []
+
+jobs:
+    firefox:
+        shipping-product: firefox
+    devedition:
+        shipping-product: devedition
diff --git a/taskcluster/ci/release-partner-attribution-beetmover/kind.yml b/taskcluster/ci/release-partner-attribution-beetmover/kind.yml
new file mode 100644
index 0000000000..2851ff7d37
--- /dev/null
+++ b/taskcluster/ci/release-partner-attribution-beetmover/kind.yml
@@ -0,0 +1,22 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.partner_attribution_beetmover
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-partner-attribution
+
+jobs:
+    release-partner-attribution-beetmover:
+        from-deps:
+            group-by: single-with-filters
+        shipping-product: firefox
+        shipping-phase: promote
+        partner-path: "partner-repacks/{partner}/{subpartner}/v{release_partner_build_number}/{platform}/{locale}"
diff --git a/taskcluster/ci/release-partner-attribution/kind.yml b/taskcluster/ci/release-partner-attribution/kind.yml
new file mode 100644
index 0000000000..1da2656150
--- /dev/null
+++ b/taskcluster/ci/release-partner-attribution/kind.yml
@@ -0,0 +1,40 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.partner_attribution:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - repackage-signing
+    - repackage-signing-l10n
+
+# move this into the single job ??
+job-defaults:
+    name: partner-attribution
+    description: Release Promotion partner attribution
+    run-on-projects: []  # to make sure this never runs as part of CI
+    shipping-product: firefox
+    shipping-phase: promote
+    worker-type: b-linux-gcp
+    worker:
+        docker-image:
+            in-tree: "partner-repack"
+        chain-of-trust: true
+        max-run-time: 1800
+    run:
+        using: mach
+        mach: python python/mozrelease/mozrelease/attribute_builds.py
+
+jobs:
+    partner-attribution:
+        attributes:
+            build_platform: linux-shippable
+            build_type: opt
+            artifact_prefix: releng/partner
+            shippable: true
diff --git a/taskcluster/ci/release-partner-repack-beetmover/kind.yml b/taskcluster/ci/release-partner-repack-beetmover/kind.yml
new file mode 100644
index 0000000000..164446f683
--- /dev/null
+++ b/taskcluster/ci/release-partner-repack-beetmover/kind.yml
@@ -0,0 +1,30 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.chunk_partners
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.beetmover_repackage_partner
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-partner-repack-repackage-signing
+
+only-for-build-platforms:
+    - linux-shippable/opt
+    - linux64-shippable/opt
+    - macosx64-shippable/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - win64-aarch64-shippable/opt
+
+jobs:
+    release-partner-repack-beetmover:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: promote
+        partner-path: "partner-repacks/{partner}/{subpartner}/v{release_partner_build_number}/{platform}/{locale}"
diff --git a/taskcluster/ci/release-partner-repack-bouncer-sub/kind.yml b/taskcluster/ci/release-partner-repack-bouncer-sub/kind.yml
new file mode 100644
index 0000000000..98fa149810
--- /dev/null
+++ b/taskcluster/ci/release-partner-repack-bouncer-sub/kind.yml
@@ -0,0 +1,41 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.bouncer_submission_partners:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    description: release partners bouncer submission job
+    worker-type: bouncer
+    worker:
+        implementation: bouncer-submission
+    scopes:
+        by-release-level:
+            production:
+                - project:releng:bouncer:action:submission
+                - project:releng:bouncer:server:production
+            staging:
+                - project:releng:bouncer:action:submission
+                - project:releng:bouncer:server:staging
+    run-on-projects: []
+    shipping-phase: promote
+    locales-file: browser/locales/shipped-locales
+    treeherder:
+        symbol: Rel(BncSub-P)
+        kind: test
+        tier: 1
+
+jobs:
+    firefox:
+        bouncer-platforms: ['linux', 'linux64', 'osx', 'win', 'win64', 'win64-aarch64']
+        bouncer-products:
+            by-release-type:
+                default: ['installer', 'stub-installer']
+                esr.*: []
+        shipping-product: firefox
+        treeherder:
+            platform: firefox-release/opt
diff --git a/taskcluster/ci/release-partner-repack-chunking-dummy/kind.yml b/taskcluster/ci/release-partner-repack-chunking-dummy/kind.yml
new file mode 100644
index 0000000000..4975931312
--- /dev/null
+++ b/taskcluster/ci/release-partner-repack-chunking-dummy/kind.yml
@@ -0,0 +1,30 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.chunk_partners
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-partner-repack
+
+only-for-build-platforms:
+    - linux-shippable/opt
+    - linux64-shippable/opt
+
+jobs:
+    release-partner-repack-chunking-dummy:
+        from-deps:
+            group-by: single-with-filters
+            copy-attributes: true
+        shipping-phase: promote
+        shipping-product: firefox
+        name: release-partner-repack-chunking-dummy
+        description: Dummy task to deal with fanning out Linux partner repacks
+        run-on-projects: []
+        worker-type: succeed
diff --git a/taskcluster/ci/release-partner-repack-mac-notarization/kind.yml b/taskcluster/ci/release-partner-repack-mac-notarization/kind.yml
new file mode 100644
index 0000000000..ee7a78e54f
--- /dev/null
+++ b/taskcluster/ci/release-partner-repack-mac-notarization/kind.yml
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.mac_notarization
+    - gecko_taskgraph.transforms.chunk_partners
+    - gecko_taskgraph.transforms.partner_signing
+    - gecko_taskgraph.transforms.signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-partner-repack-mac-signing
+
+only-for-build-platforms:
+    - macosx64-shippable/opt
+
+jobs:
+    release-partner-repack-mac-notarization:
+        from-deps:
+            group-by: partner-repack-ids
+            copy-attributes: true
+        shipping-product: firefox
+        shipping-phase: promote
+        max-run-time: 1800
+        copy-repack-ids: true
diff --git a/taskcluster/ci/release-partner-repack-mac-signing/kind.yml b/taskcluster/ci/release-partner-repack-mac-signing/kind.yml
new file mode 100644
index 0000000000..dec5189979
--- /dev/null
+++ b/taskcluster/ci/release-partner-repack-mac-signing/kind.yml
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.chunk_partners
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.partner_signing
+    - gecko_taskgraph.transforms.signing
+    - gecko_taskgraph.transforms.hardened_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-partner-repack
+
+only-for-build-platforms:
+    - macosx64-shippable/opt
+
+jobs:
+    release-partner-repack-mac-signing:
+        from-deps:
+            group-by: partner-repack-ids
+            copy-attributes: true
+        shipping-product: firefox
+        shipping-phase: promote
+        repacks-per-chunk: 5
diff --git a/taskcluster/ci/release-partner-repack-repackage-signing/kind.yml b/taskcluster/ci/release-partner-repack-repackage-signing/kind.yml
new file mode 100644
index 0000000000..2242023f91
--- /dev/null
+++ b/taskcluster/ci/release-partner-repack-repackage-signing/kind.yml
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.chunk_partners
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage_signing_partner
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-partner-repack-chunking-dummy  # Linux
+    - release-partner-repack-repackage  # Windows, Mac
+
+only-for-build-platforms:
+    - linux-shippable/opt
+    - linux64-shippable/opt
+    - macosx64-shippable/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - win64-aarch64-shippable/opt
+
+jobs:
+    release-partner-repack-repackage-signing:
+        from-deps:
+            group-by: single-with-filters
diff --git a/taskcluster/ci/release-partner-repack-repackage/kind.yml b/taskcluster/ci/release-partner-repack-repackage/kind.yml
new file mode 100644
index 0000000000..099c55240f
--- /dev/null
+++ b/taskcluster/ci/release-partner-repack-repackage/kind.yml
@@ -0,0 +1,61 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.repackage_set_upstream_mac_kind
+    - gecko_taskgraph.transforms.chunk_partners
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage_partner
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-partner-repack
+    - release-partner-repack-mac-signing
+    - release-partner-repack-mac-notarization
+    - toolchain
+
+only-for-build-platforms:
+    - macosx64-shippable/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - win64-aarch64-shippable/opt
+
+jobs:
+    release-partner-repack-repackage:
+        from-deps:
+            group-by: single-with-filters
+        upstream-mac-kind:
+            by-build-type:
+                debug: release-partner-repack-mac-signing
+                default:
+                    by-project:
+                        mozilla-(central|beta|release|esr.*): release-partner-repack-mac-notarization
+                        default: release-partner-repack-mac-signing
+        mozharness:
+            config:
+                by-build-platform:
+                    macosx64-.*:
+                        - repackage/base.py
+                        - repackage/osx_partner.py
+                    win32-.*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win32_partner.py
+                    win64-(?!aarch64).*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win64_partner.py
+                    win64-aarch64-.*:
+                        - repackage/base.py
+                        - repackage/win64-aarch64_sfx_stub.py
+                        - repackage/win64_partner.py
+        package-formats:
+            by-build-platform:
+                macosx64\b.*: [dmg]
+                win32\b.*: [installer]
+                win64\b.*: [installer]
diff --git a/taskcluster/ci/release-partner-repack/kind.yml b/taskcluster/ci/release-partner-repack/kind.yml
new file mode 100644
index 0000000000..2a5d2fc996
--- /dev/null
+++ b/taskcluster/ci/release-partner-repack/kind.yml
@@ -0,0 +1,87 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.partner_repack:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - build-signing
+    - build-mac-signing
+    - build-mac-notarization
+    - shippable-l10n-signing
+    - shippable-l10n-mac-signing
+    - shippable-l10n-mac-notarization
+
+job-defaults:
+    name: partner-repack
+    description: Release Promotion partner repacks
+    run-on-projects: []  # to make sure this never runs as part of CI
+    shipping-product: firefox
+    shipping-phase: promote
+    worker-type: b-linux-gcp
+    worker:
+        docker-image:
+            in-tree: "partner-repack"
+        chain-of-trust: true
+        max-run-time: 7200
+    run:
+        using: mozharness
+        config:
+            - partner_repacks/release_mozilla-release_desktop.py
+        script: mozharness/scripts/desktop_partner_repacks.py
+        job-script: taskcluster/scripts/builder/repackage.sh
+        tooltool-downloads: false
+    extra:
+        limit-locales:
+            by-release-level:
+                staging: true
+                production: false
+
+jobs:
+    linux-shippable:
+        attributes:
+            build_platform: linux-shippable
+            build_type: opt
+            artifact_prefix: releng/partner
+            shippable: true
+
+    linux64-shippable:
+        attributes:
+            build_platform: linux64-shippable
+            build_type: opt
+            artifact_prefix: releng/partner
+            shippable: true
+
+    macosx64-shippable:
+        attributes:
+            build_platform: macosx64-shippable
+            build_type: opt
+            artifact_prefix: releng/partner
+            shippable: true
+
+    win32-shippable:
+        attributes:
+            build_platform: win32-shippable
+            build_type: opt
+            artifact_prefix: releng/partner
+            shippable: true
+
+    win64-shippable:
+        attributes:
+            build_platform: win64-shippable
+            build_type: opt
+            artifact_prefix: releng/partner
+            shippable: true
+
+    win64-aarch64-shippable:
+        attributes:
+            build_platform: win64-aarch64-shippable
+            build_type: opt
+            artifact_prefix: releng/partner
+            shippable: true
diff --git a/taskcluster/ci/release-push-langpacks/kind.yml b/taskcluster/ci/release-push-langpacks/kind.yml
new file mode 100644
index 0000000000..fbc5bcc8a9
--- /dev/null
+++ b/taskcluster/ci/release-push-langpacks/kind.yml
@@ -0,0 +1,52 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.release_sign_and_push_langpacks
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - build
+    - shippable-l10n
+
+only-for-build-platforms:
+    - linux64-shippable/opt  # addons.mozilla.org only support 1 platform per locale. That's why we use linux64
+    - linux64-devedition/opt
+    - macosx64-shippable/opt  # Although, we need the special locale "ja-JP-Mac" from this platform
+    - macosx64-devedition/opt
+
+jobs:
+    release-push-langpacks:
+        description: Sends {locales} XPIs for platform to addons.mozilla.org
+        from-deps:
+            group-by: single-with-filters
+        worker-type: addon
+        worker:
+            channel:
+                by-project:
+                    mozilla-release:
+                        by-platform:
+                            # ja-JP-mac is only langpack on mac, and is unlisted always
+                            macosx64.*: unlisted
+                            default: listed
+                    mozilla-beta:
+                        by-platform:
+                            # ja-JP-mac is only langpack on mac, and is unlisted always
+                            macosx64-shippable.*: unlisted
+                            macosx64-devedition.*: unlisted
+                            linux.*-devedition.*: unlisted
+                            default: listed
+                    default: unlisted
+            upstream-artifacts:  # See transforms
+        run-on-projects: []
+        scopes:
+            by-release-level:
+                production:
+                    - project:releng:addons.mozilla.org:server:production
+                staging:
+                    - project:releng:addons.mozilla.org:server:staging
+        shipping-phase: promote
diff --git a/taskcluster/ci/release-secondary-balrog-scheduling/kind.yml b/taskcluster/ci/release-secondary-balrog-scheduling/kind.yml
new file mode 100644
index 0000000000..9a230639b9
--- /dev/null
+++ b/taskcluster/ci/release-secondary-balrog-scheduling/kind.yml
@@ -0,0 +1,41 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.scriptworker:add_balrog_scopes
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - post-balrog-dummy
+    - post-beetmover-dummy
+    - release-secondary-balrog-submit-toplevel
+
+job-defaults:
+    run-on-projects: []
+    shipping-phase: ship
+    worker-type: balrog
+    worker:
+        implementation: balrog
+        balrog-action: schedule
+
+jobs:
+    firefox-secondary-rc:
+        description: Schedule Beta Firefox publishing in balrog
+        name: release-firefox_schedule_publishing_in_balrog
+        shipping-product: firefox
+        worker:
+            product: firefox
+            release-eta: ''
+            channel-names: ["beta", "beta-localtest", "beta-cdntest"]
+            publish-rules: [32]
+            rules-to-update: ["firefox-beta-cdntest", "firefox-beta-localtest"]
+            pin-channels: ["beta"]
+        treeherder:
+            platform: firefox-release/opt
+            symbol: Rel(BSFxRC)
+            tier: 1
+            kind: build
diff --git a/taskcluster/ci/release-secondary-balrog-submit-toplevel/kind.yml b/taskcluster/ci/release-secondary-balrog-submit-toplevel/kind.yml
new file mode 100644
index 0000000000..d742b4fb61
--- /dev/null
+++ b/taskcluster/ci/release-secondary-balrog-submit-toplevel/kind.yml
@@ -0,0 +1,46 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.scriptworker:add_balrog_scopes
+    - gecko_taskgraph.transforms.balrog_toplevel:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    run-on-projects: []  # to make sure this never runs in CI
+    shipping-phase: promote
+    worker-type: balrog
+    worker:
+        implementation: balrog
+        balrog-action: v2-submit-toplevel
+        require-mirrors: false
+        platforms: ["linux", "linux64", "macosx64", "win32", "win64", "win64-aarch64"]
+        archive-domain:
+            by-release-level:
+                production: archive.mozilla.org
+                staging: ftp.stage.mozaws.net
+        download-domain:
+            by-release-level:
+                production: download.mozilla.org
+                staging: dev.bouncer.nonprod.webservices.mozgcp.net
+    whats-new-config: browser/config/whats_new_page.yml
+
+jobs:
+    firefox:
+        name: submit-toplevel-rc-firefox-release-to-balrog
+        description: submit toplevel RC Firefox release to balrog
+        shipping-product: firefox
+        worker:
+            product: firefox
+            channel-names: ["beta", "beta-localtest", "beta-cdntest"]
+            rules-to-update: ["firefox-beta-cdntest", "firefox-beta-localtest"]
+            pin-channels: ["beta-localtest", "beta-cdntest"]
+        treeherder:
+            platform: firefox-release/opt
+            symbol: Rel(BPFxRC)
+            tier: 1
+            kind: build
diff --git a/taskcluster/ci/release-secondary-final-verify/kind.yml b/taskcluster/ci/release-secondary-final-verify/kind.yml
new file mode 100644
index 0000000000..0d2e58d01d
--- /dev/null
+++ b/taskcluster/ci/release-secondary-final-verify/kind.yml
@@ -0,0 +1,38 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - post-balrog-dummy
+    - post-beetmover-dummy
+    - release-secondary-balrog-submit-toplevel
+    - release-secondary-update-verify-config
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.final_verify:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: secondary-final-verify
+    run-on-projects: []  # to make sure this never runs as part of CI
+    worker-type: b-linux-gcp
+    worker:
+        docker-image:
+            in-tree: "update-verify"
+        max-run-time: 7200
+        retry-exit-status: [1]
+
+jobs:
+    firefox:
+        description: secondary final verify
+        shipping-phase: promote
+        shipping-product: firefox
+        treeherder:
+            platform: firefox-release/opt
+            kind: test
+            symbol: Rel(FVS)
+            tier: 1
diff --git a/taskcluster/ci/release-secondary-flatpak-push/kind.yml b/taskcluster/ci/release-secondary-flatpak-push/kind.yml
new file mode 100644
index 0000000000..7f770d4ee5
--- /dev/null
+++ b/taskcluster/ci/release-secondary-flatpak-push/kind.yml
@@ -0,0 +1,38 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release:run_on_releases
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_flatpak_push:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - release-flatpak-repackage
+
+job-defaults:
+    description: Pushes Flatpaks onto Flathub
+    run-on-projects: []  # to make sure this never runs as part of CI
+    run-on-releases: [release-rc]
+    shipping-phase: ship  # ship-rc phase
+    treeherder:
+        platform: linux64/opt
+        kind: build
+        tier: 2
+    worker-type:
+        by-release-level:
+            production: scriptworker-k8s/gecko-3-pushflatpak
+            staging: scriptworker-k8s/gecko-1-pushflatpak
+    worker:
+        implementation: push-flatpak
+        channel: beta
+
+jobs:
+    firefox-rc:
+        shipping-product: firefox
+        flathub-scope: "flathub:firefox"
+        treeherder:
+            symbol: Flatpak(push-beta)
diff --git a/taskcluster/ci/release-secondary-notify-ship/kind.yml b/taskcluster/ci/release-secondary-notify-ship/kind.yml
new file mode 100644
index 0000000000..ab9b20ed62
--- /dev/null
+++ b/taskcluster/ci/release-secondary-notify-ship/kind.yml
@@ -0,0 +1,34 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_notifications:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - release-secondary-balrog-scheduling
+
+job-defaults:
+    name: notify-release-drivers-ship
+    description: Sends email to release-drivers telling release was shipped.
+    run-on-projects: []
+    shipping-phase: ship
+    worker-type: succeed
+    notifications:
+        emails:
+            by-project:
+                mozilla-beta: ["release-signoff@mozilla.org"]
+                mozilla-release: ["release-signoff@mozilla.org"]
+                try: ["{config[params][owner]}"]
+                default: []
+
+jobs:
+    firefox-rc:
+        shipping-product: firefox
+        notifications:
+            subject: "{task[shipping-product]} {release_config[version]} build{release_config[build_number]}/{config[params][project]} RC updates are ready!"
+            message: "{task[shipping-product]} {release_config[version]} build{release_config[build_number]}/{config[params][project]} RC updates are ready!"
diff --git a/taskcluster/ci/release-secondary-update-verify-config/kind.yml b/taskcluster/ci/release-secondary-update-verify-config/kind.yml
new file mode 100644
index 0000000000..7e28131a5e
--- /dev/null
+++ b/taskcluster/ci/release-secondary-update-verify-config/kind.yml
@@ -0,0 +1,124 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.update_verify_config:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: secondary-update-verify-config
+    run-on-projects: []  # to make sure this never runs as part of CI
+    shipping-product: firefox
+    shipping-phase: promote
+    worker-type: b-linux-gcp
+    worker:
+        docker-image:
+            in-tree: "update-verify"
+        max-run-time: 3600
+        artifacts:
+            - name: public/build/update-verify.cfg
+              path: /builds/worker/checkouts/gecko/update-verify.cfg
+              type: file
+    run:
+        sparse-profile: mozharness
+    extra:
+        app-name: browser
+        branch-prefix: mozilla
+        product: firefox
+        archive-prefix:
+            by-release-level:
+                staging: "http://ftp.stage.mozaws.net/pub"
+                production: "https://archive.mozilla.org/pub"
+        previous-archive-prefix:
+            by-release-level:
+                staging: "https://archive.mozilla.org/pub"
+                production: null
+        aus-server:
+            by-release-level:
+                staging: "https://stage.balrog.nonprod.cloudops.mozgcp.net"
+                production: "https://aus5.mozilla.org"
+        override-certs:
+            by-release-level:
+                staging: dep
+                production: null
+        include-version: beta
+        last-watershed: "72.0.2"
+        mar-channel-id-override: beta
+        channel: "beta-localtest"
+
+jobs:
+    firefox-secondary-linux:
+        treeherder:
+            symbol: UVCS
+            platform: linux-shippable/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: linux-shippable
+        extra:
+            platform: linux-i686
+            updater-platform: linux-x86_64
+
+    firefox-secondary-linux64:
+        treeherder:
+            symbol: UVCS
+            platform: linux64-shippable/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: linux64-shippable
+        extra:
+            platform: linux-x86_64
+            updater-platform: linux-x86_64
+
+    firefox-secondary-macosx64:
+        treeherder:
+            symbol: UVCS
+            platform: macosx64/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: macosx64-shippable
+        extra:
+            platform: mac
+            updater-platform: linux-x86_64
+
+    firefox-secondary-win32:
+        treeherder:
+            symbol: UVCS
+            platform: windows2012-32-shippable/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win32-shippable
+        extra:
+            platform: win32
+            updater-platform: linux-x86_64
+
+    firefox-secondary-win64:
+        treeherder:
+            symbol: UVCS
+            platform: windows2012-64-shippable/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win64-shippable
+        extra:
+            platform: win64
+            updater-platform: linux-x86_64
+
+    firefox-secondary-win64-aarch64:
+        treeherder:
+            symbol: UVCS
+            platform: windows2012-aarch64-shippable/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win64-aarch64-shippable
+        extra:
+            platform: win64-aarch64
+            updater-platform: linux-x86_64
diff --git a/taskcluster/ci/release-secondary-update-verify/kind.yml b/taskcluster/ci/release-secondary-update-verify/kind.yml
new file mode 100644
index 0000000000..f567cf7ae3
--- /dev/null
+++ b/taskcluster/ci/release-secondary-update-verify/kind.yml
@@ -0,0 +1,77 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - post-balrog-dummy
+    - post-beetmover-dummy
+    - release-secondary-balrog-submit-toplevel
+    - release-secondary-update-verify-config
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.update_verify:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: secondary-update-verify
+    run-on-projects: []  # to make sure this never runs as part of CI
+    shipping-phase: promote
+    worker-type: b-linux-gcp
+    worker:
+        artifacts:
+            - name: 'public/build/diff-summary.log'
+              path: '/builds/worker/tools/release/updates/diff-summary.log'
+              type: file
+        docker-image:
+            in-tree: "update-verify"
+        max-run-time: 7200
+        retry-exit-status:
+            - 255
+    treeherder:
+        symbol: UV(UVS)
+        kind: test
+    extra:
+        chunks: 16
+
+jobs:
+    firefox-secondary-linux64:
+        description: linux64 secondary channel update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: linux64-shippable
+
+    firefox-secondary-linux:
+        description: linux secondary channel update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: linux-shippable
+
+    firefox-secondary-win64:
+        description: win64 secondary channel update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: win64-shippable
+
+    firefox-secondary-win64-aarch64:
+        description: win64 secondary channel update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: win64-aarch64-shippable
+
+    firefox-secondary-win32:
+        description: win32 secondary channel update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: win32-shippable
+
+    firefox-secondary-macosx64:
+        description: macosx64 secondary channel update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: macosx64-shippable
+        extra:
+            chunks: 30
diff --git a/taskcluster/ci/release-snap-repackage/kind.yml b/taskcluster/ci/release-snap-repackage/kind.yml
new file mode 100644
index 0000000000..73d9d8a410
--- /dev/null
+++ b/taskcluster/ci/release-snap-repackage/kind.yml
@@ -0,0 +1,60 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_snap_repackage:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - post-beetmover-dummy
+    - post-langpack-dummy
+
+job-defaults:
+    description: Generates snap image
+    run-on-projects: []  # to make sure this never runs as part of CI
+    shipping-phase: promote
+    scopes: []
+    treeherder:
+        platform: linux64-shippable/opt
+        kind: build
+        tier: 2
+    worker-type: b-linux-gcp
+    worker:
+        implementation: docker-worker
+        os: linux
+        max-run-time: 7200
+        docker-image: {in-tree: firefox-snap}
+        artifacts:
+            - name: public/build
+              type: directory
+              path: /home/worker/artifacts/
+        command:
+            - /bin/bash
+            - -cx
+            - ./runme.sh
+        env:
+            VERSION: "{release_config[version]}"
+            BUILD_NUMBER: "{release_config[build_number]}"
+            CANDIDATES_DIR:
+                by-release-level:
+                    staging:
+                        https://ftp.stage.mozaws.net/pub/{task[shipping-product]}/candidates
+                    production:
+                        https://archive.mozilla.org/pub/{task[shipping-product]}/candidates
+            LC_ALL: C.UTF-8
+            LANG: C.UTF-8
+            L10N_CHANGESETS: "{config_params[head_repository]}/raw-file/{config_params[head_rev]}/browser/locales/l10n-changesets.json"
+        chain-of-trust: true
+
+jobs:
+    firefox:
+        shipping-product: firefox
+        attributes:
+            build_platform: linux64-shippable
+            build_type: opt
+        treeherder:
+            symbol: Snap(r)
diff --git a/taskcluster/ci/release-source-checksums-signing/kind.yml b/taskcluster/ci/release-source-checksums-signing/kind.yml
new file mode 100644
index 0000000000..de9f98acc0
--- /dev/null
+++ b/taskcluster/ci/release-source-checksums-signing/kind.yml
@@ -0,0 +1,20 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.source_checksums_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - beetmover-source
+
+jobs:
+    release-source-checksums-signing:
+        shipping-phase: promote
+        from-deps:
+            group-by: single-with-filters
diff --git a/taskcluster/ci/release-source-signing/kind.yml b/taskcluster/ci/release-source-signing/kind.yml
new file mode 100644
index 0000000000..9ab9e37d88
--- /dev/null
+++ b/taskcluster/ci/release-source-signing/kind.yml
@@ -0,0 +1,21 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.build_signing
+    - gecko_taskgraph.transforms.signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - release-source
+
+jobs:
+    release-source-signing:
+        from-deps:
+            copy-attributes: true
+        shipping-phase: promote
diff --git a/taskcluster/ci/release-source/kind.yml b/taskcluster/ci/release-source/kind.yml
new file mode 100644
index 0000000000..6b550e9d7e
--- /dev/null
+++ b/taskcluster/ci/release-source/kind.yml
@@ -0,0 +1,54 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.build:transforms
+    - gecko_taskgraph.transforms.build_attrs:transforms
+    - gecko_taskgraph.transforms.build_lints:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+
+job-defaults:
+    shipping-phase: promote
+    treeherder:
+        symbol: Src
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 3600
+        env:
+            PKG_SRCPACK_BASENAME: source
+    attributes:
+        shippable: true
+    run:
+        using: mozharness
+        actions: [package-source]
+        script: "mozharness/scripts/fx_desktop_build.py"
+        config:
+            - builds/releng_sub_linux_configs/64_source.py
+        options: []
+        tooltool-downloads: public
+    run-on-projects: []
+    # The build_attrs transform defaults to setting a `skip-unlles-schedules'
+    # optimization based on the task label. The tasks here don't have corresponding
+    # schedules defined in mozbuild.
+    optimization: null
+
+jobs:
+    firefox-source/opt:
+        description: "Firefox source builder"
+        treeherder:
+            platform: firefox-release/opt
+        shipping-product: firefox
+
+    devedition-source/opt:
+        description: "Devedition source builder"
+        treeherder:
+            platform: devedition-release/opt
+        shipping-product: devedition
diff --git a/taskcluster/ci/release-update-verify-config-next/kind.yml b/taskcluster/ci/release-update-verify-config-next/kind.yml
new file mode 100644
index 0000000000..959d0afb9a
--- /dev/null
+++ b/taskcluster/ci/release-update-verify-config-next/kind.yml
@@ -0,0 +1,98 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release:run_on_releases
+    - gecko_taskgraph.transforms.update_verify_config:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: update-verify-config-next
+    run-on-projects: []  # to make sure this never runs as part of CI
+    run-on-releases: [esr115]
+    shipping-phase: promote
+    worker-type: b-linux-gcp
+    worker:
+        docker-image:
+            in-tree: "update-verify"
+        max-run-time: 3600
+        artifacts:
+            - name: public/build/update-verify.cfg
+              path: /builds/worker/checkouts/gecko/update-verify.cfg
+              type: file
+    run:
+        sparse-profile: mozharness
+    treeherder:
+        symbol: UVCnext
+        kind: test
+        tier: 1
+    extra:
+        app-name: browser
+        branch-prefix: mozilla
+        archive-prefix:
+            by-release-level:
+                staging: "http://ftp.stage.mozaws.net/pub"
+                production: "https://archive.mozilla.org/pub"
+        previous-archive-prefix:
+            by-release-level:
+                staging: "https://archive.mozilla.org/pub"
+                production: null
+        aus-server:
+            by-release-level:
+                staging: "https://stage.balrog.nonprod.cloudops.mozgcp.net"
+                production: "https://aus5.mozilla.org"
+        override-certs:
+            by-release-level:
+                staging: dep
+                production: null
+        updater-platform: linux-x86_64
+        product: firefox
+        channel: "esr-localtest-next"
+        include-version: esr115-next
+        last-watershed: "68.0esr"
+
+jobs:
+    firefox-next-linux:
+        shipping-product: firefox
+        treeherder:
+            platform: linux32-shippable/opt
+        attributes:
+            build_platform: linux-shippable
+        extra:
+            platform: linux-i686
+    firefox-next-linux64:
+        shipping-product: firefox
+        treeherder:
+            platform: linux64-shippable/opt
+        attributes:
+            build_platform: linux64-shippable
+        extra:
+            platform: linux-x86_64
+    firefox-next-macosx64:
+        shipping-product: firefox
+        treeherder:
+            platform: osx-shippable/opt
+        attributes:
+            build_platform: macosx64-shippable
+        extra:
+            platform: mac
+    firefox-next-win32:
+        shipping-product: firefox
+        treeherder:
+            platform: windows2012-32-shippable/opt
+        attributes:
+            build_platform: win32-shippable
+        extra:
+            platform: win32
+    firefox-next-win64:
+        shipping-product: firefox
+        treeherder:
+            platform: windows2012-64-shippable/opt
+        attributes:
+            build_platform: win64-shippable
+        extra:
+            platform: win64
diff --git a/taskcluster/ci/release-update-verify-config/kind.yml b/taskcluster/ci/release-update-verify-config/kind.yml
new file mode 100644
index 0000000000..d4e40cda12
--- /dev/null
+++ b/taskcluster/ci/release-update-verify-config/kind.yml
@@ -0,0 +1,292 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.update_verify_config:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: update-verify-config
+    run-on-projects: []  # to make sure this never runs as part of CI
+    shipping-phase: promote
+    worker-type: b-linux-gcp
+    worker:
+        docker-image:
+            in-tree: "update-verify"
+        max-run-time: 3600
+        artifacts:
+            - name: public/build/update-verify.cfg
+              path: /builds/worker/checkouts/gecko/update-verify.cfg
+              type: file
+    run:
+        sparse-profile: mozharness
+    extra:
+        app-name: browser
+        branch-prefix: mozilla
+        archive-prefix:
+            by-release-level:
+                staging: "http://ftp.stage.mozaws.net/pub"
+                production: "https://archive.mozilla.org/pub"
+        previous-archive-prefix:
+            by-release-level:
+                staging: "https://archive.mozilla.org/pub"
+                production: null
+        aus-server:
+            by-release-level:
+                staging: "https://stage.balrog.nonprod.cloudops.mozgcp.net"
+                production: "https://aus5.mozilla.org"
+        override-certs:
+            by-release-level:
+                staging: dep
+                production: null
+        include-version:
+            by-release-type:
+                beta: beta
+                release(-rc)?: nonbeta
+                esr.*: esr
+                default: beta
+        last-watershed:
+            by-release-type:
+                beta: "72.0"
+                release(-rc)?: "72.0.2"
+                esr115: "68.0esr"
+                default: "default"
+
+jobs:
+    firefox-linux:
+        shipping-product: firefox
+        treeherder:
+            symbol: UVC
+            platform: linux32-shippable/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: linux-shippable
+        extra:
+            product: firefox
+            platform: linux-i686
+            updater-platform: linux-x86_64
+            channel:
+                by-release-type:
+                    beta: "beta-localtest"
+                    release(-rc)?: "release-localtest"
+                    esr.*: "esr-localtest"
+                    default: "default"
+            mar-channel-id-override:
+                by-release-type:
+                    beta: beta
+                    default: null
+
+    firefox-linux64:
+        shipping-product: firefox
+        treeherder:
+            symbol: UVC
+            platform: linux64-shippable/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: linux64-shippable
+        extra:
+            product: firefox
+            platform: linux-x86_64
+            updater-platform: linux-x86_64
+            channel:
+                by-release-type:
+                    beta: "beta-localtest"
+                    release(-rc)?: "release-localtest"
+                    esr.*: "esr-localtest"
+                    default: "default"
+            mar-channel-id-override:
+                by-release-type:
+                    beta: beta
+                    default: null
+
+    firefox-macosx64:
+        shipping-product: firefox
+        treeherder:
+            symbol: UVC
+            platform: osx-shippable/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: macosx64-shippable
+        extra:
+            product: firefox
+            platform: mac
+            updater-platform: linux-x86_64
+            channel:
+                by-release-type:
+                    beta: "beta-localtest"
+                    release(-rc)?: "release-localtest"
+                    esr.*: "esr-localtest"
+                    default: "default"
+            mar-channel-id-override:
+                by-release-type:
+                    beta: beta
+                    default: null
+
+    firefox-win32:
+        shipping-product: firefox
+        treeherder:
+            symbol: UVC
+            platform: windows2012-32-shippable/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win32-shippable
+        extra:
+            product: firefox
+            platform: win32
+            updater-platform: linux-x86_64
+            channel:
+                by-release-type:
+                    beta: "beta-localtest"
+                    release(-rc)?: "release-localtest"
+                    esr.*: "esr-localtest"
+                    default: "default"
+            mar-channel-id-override:
+                by-release-type:
+                    beta: beta
+                    default: null
+
+    firefox-win64:
+        shipping-product: firefox
+        treeherder:
+            symbol: UVC
+            platform: windows2012-64-shippable/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win64-shippable
+        extra:
+            product: firefox
+            platform: win64
+            updater-platform: linux-x86_64
+            channel:
+                by-release-type:
+                    beta: "beta-localtest"
+                    release(-rc)?: "release-localtest"
+                    esr.*: "esr-localtest"
+                    default: "default"
+            mar-channel-id-override:
+                by-release-type:
+                    beta: beta
+                    default: null
+
+    firefox-win64-aarch64:
+        shipping-product: firefox
+        treeherder:
+            symbol: UVC
+            platform: windows2012-aarch64-shippable/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win64-aarch64-shippable
+        extra:
+            product: firefox
+            platform: win64-aarch64
+            updater-platform: linux-x86_64
+            channel:
+                by-release-type:
+                    beta: "beta-localtest"
+                    release(-rc)?: "release-localtest"
+                    esr.*: "esr-localtest"
+                    default: "default"
+            mar-channel-id-override:
+                by-release-type:
+                    beta: beta
+                    default: null
+
+    devedition-linux:
+        shipping-product: devedition
+        treeherder:
+            symbol: UVC
+            platform: linux32-devedition/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: linux-devedition
+        extra:
+            product: firefox
+            platform: linux-i686
+            updater-platform: linux-x86_64
+            channel: "aurora-localtest"
+
+    devedition-linux64:
+        shipping-product: devedition
+        treeherder:
+            symbol: UVC
+            platform: linux64-devedition/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: linux64-devedition
+        extra:
+            product: firefox
+            platform: linux-x86_64
+            updater-platform: linux-x86_64
+            channel: "aurora-localtest"
+
+    devedition-macosx64:
+        shipping-product: devedition
+        treeherder:
+            symbol: UVC
+            platform: osx-cross-devedition/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: macosx64-devedition
+        extra:
+            product: firefox
+            platform: mac
+            updater-platform: linux-x86_64
+            channel: "aurora-localtest"
+
+    devedition-win32:
+        shipping-product: devedition
+        treeherder:
+            symbol: UVC
+            platform: windows2012-32-devedition/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win32-devedition
+        extra:
+            product: firefox
+            platform: win32
+            updater-platform: linux-x86_64
+            channel: "aurora-localtest"
+
+    devedition-win64:
+        shipping-product: devedition
+        treeherder:
+            symbol: UVC
+            platform: windows2012-64-devedition/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win64-devedition
+        extra:
+            product: firefox
+            platform: win64
+            updater-platform: linux-x86_64
+            channel: "aurora-localtest"
+
+    devedition-win64-aarch64:
+        shipping-product: devedition
+        treeherder:
+            symbol: UVC
+            platform: windows2012-aarch64-devedition/opt
+            kind: test
+            tier: 1
+        attributes:
+            build_platform: win64-aarch64-devedition
+        extra:
+            product: firefox
+            platform: win64-aarch64
+            updater-platform: linux-x86_64
+            channel: "aurora-localtest"
diff --git a/taskcluster/ci/release-update-verify-next/kind.yml b/taskcluster/ci/release-update-verify-next/kind.yml
new file mode 100644
index 0000000000..ad72e9b118
--- /dev/null
+++ b/taskcluster/ci/release-update-verify-next/kind.yml
@@ -0,0 +1,73 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - post-balrog-dummy
+    - post-beetmover-dummy
+    - release-balrog-submit-toplevel
+    - release-update-verify-config-next
+
+transforms:
+    - gecko_taskgraph.transforms.release:run_on_releases
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.update_verify:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: update-verify-next
+    run-on-projects: []  # to make sure this never runs as part of CI
+    run-on-releases: [esr115]
+    shipping-phase: promote
+    worker-type: b-linux-gcp
+    worker:
+        artifacts:
+            - name: 'public/build/diff-summary.log'
+              path: '/builds/worker/tools/release/updates/diff-summary.log'
+              type: file
+        docker-image:
+            in-tree: "update-verify"
+        max-run-time: 7200
+        retry-exit-status:
+            - 255
+        env:
+            CHANNEL: "esr-localtest-next"
+    treeherder:
+        symbol: UVnext()
+        kind: test
+    extra:
+        chunks: 12
+
+jobs:
+    firefox-next-linux64:
+        description: linux64 esr-next update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: linux64-shippable
+
+    firefox-next-linux:
+        description: linux esr-next update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: linux-shippable
+
+    firefox-next-win64:
+        description: win64 esr-next update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: win64-shippable
+
+    firefox-next-win32:
+        description: win32 esr-next update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: win32-shippable
+
+    firefox-next-macosx64:
+        description: macosx64 esr-next update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: macosx64-shippable
diff --git a/taskcluster/ci/release-update-verify/kind.yml b/taskcluster/ci/release-update-verify/kind.yml
new file mode 100644
index 0000000000..ec7f9874da
--- /dev/null
+++ b/taskcluster/ci/release-update-verify/kind.yml
@@ -0,0 +1,115 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - post-balrog-dummy
+    - post-beetmover-dummy
+    - release-balrog-submit-toplevel
+    - release-update-verify-config
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.update_verify:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: update-verify
+    run-on-projects: []  # to make sure this never runs as part of CI
+    shipping-phase: promote
+    worker-type: b-linux-gcp
+    worker:
+        artifacts:
+            - name: 'public/build/diff-summary.log'
+              path: '/builds/worker/checkouts/gecko/diff-summary.log'
+              type: file
+        docker-image:
+            in-tree: "update-verify"
+        max-run-time: 5400
+        retry-exit-status:
+            - 255
+    treeherder:
+        symbol: UV()
+        kind: test
+    extra:
+        chunks: 16
+
+jobs:
+    firefox-linux64:
+        description: linux64 update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: linux64-shippable
+
+    firefox-linux:
+        description: linux update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: linux-shippable
+
+    firefox-win64:
+        description: win64 update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: win64-shippable
+
+    firefox-win64-aarch64:
+        description: win64-aarch64 update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: win64-aarch64-shippable
+
+    firefox-win32:
+        description: win32 update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: win32-shippable
+
+    firefox-macosx64:
+        description: macosx64 update verify
+        shipping-product: firefox
+        attributes:
+            build_platform: macosx64-shippable
+        extra:
+            chunks: 30
+
+    devedition-linux64:
+        description: linux64 update verify
+        shipping-product: devedition
+        attributes:
+            build_platform: linux64-devedition
+
+    devedition-linux:
+        description: linux update verify
+        shipping-product: devedition
+        attributes:
+            build_platform: linux-devedition
+
+    devedition-win64:
+        description: win64 update verify
+        shipping-product: devedition
+        attributes:
+            build_platform: win64-devedition
+
+    devedition-win64-aarch64:
+        description: win64-aarch64 update verify
+        shipping-product: devedition
+        attributes:
+            build_platform: win64-aarch64-devedition
+
+    devedition-win32:
+        description: win32 update verify
+        shipping-product: devedition
+        attributes:
+            build_platform: win32-devedition
+
+    devedition-macosx64:
+        description: macosx64 update verify
+        shipping-product: devedition
+        attributes:
+            build_platform: macosx64-devedition
+        extra:
+            chunks: 30
diff --git a/taskcluster/ci/release-version-bump/kind.yml b/taskcluster/ci/release-version-bump/kind.yml
new file mode 100644
index 0000000000..be1d9cd85f
--- /dev/null
+++ b/taskcluster/ci/release-version-bump/kind.yml
@@ -0,0 +1,59 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.release_deps:transforms
+    - gecko_taskgraph.transforms.release_version_bump:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - release-beetmover-push-to-release
+
+job-defaults:
+    description: Release Promotion version bump/tag
+    run-on-projects: []
+    shipping-phase: ship
+    worker-type: tree
+    worker:
+        implementation: treescript
+        dontbuild: true
+        tags: ['release']
+        bump: true
+        bump-files:
+            by-project:
+                default: ["browser/config/version_display.txt"]
+                mozilla-(release|esr.*):
+                    - "browser/config/version.txt"
+                    - "browser/config/version_display.txt"
+                    - "config/milestone.txt"
+                maple:
+                    - "browser/config/version.txt"
+                    - "browser/config/version_display.txt"
+                    - "config/milestone.txt"
+        push:
+            by-project:
+                mozilla-(beta|release|esr.*): true
+                maple: true
+                default: false
+
+jobs:
+    firefox:
+        name: firefox-version-bump
+        shipping-product: firefox
+        treeherder:
+            platform: firefox-release/opt
+            symbol: Rel(VerBump)
+            tier: 1
+            kind: build
+
+    devedition:
+        name: devedition-version-bump
+        shipping-product: devedition
+        treeherder:
+            platform: devedition-release/opt
+            symbol: Rel(VerBump)
+            tier: 1
+            kind: build
diff --git a/taskcluster/ci/repackage-deb-l10n/kind.yml b/taskcluster/ci/repackage-deb-l10n/kind.yml
new file mode 100644
index 0000000000..a22e50787a
--- /dev/null
+++ b/taskcluster/ci/repackage-deb-l10n/kind.yml
@@ -0,0 +1,43 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.repackage_l10n
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage
+    - gecko_taskgraph.transforms.repackage_routes
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - shippable-l10n-signing
+
+only-for-build-platforms:
+    # Langpacks support all CPU architectures. We just need to pick one
+    - linux64-devedition/opt
+    - linux64-shippable/opt
+
+jobs:
+    repackage-deb-l10n:
+        from-deps:
+            group-by: single-with-filters
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {"in-tree": "debian12-repackage"}
+            max-run-time: 600
+        mozharness:
+            run-as-root: true
+            use-caches: false
+            config:
+                by-build-platform:
+                    linux64\b.*:
+                        - repackage/base.py
+                        - repackage/linux64_signed.py
+        package-formats:
+            by-build-platform:
+                linux.*: [deb-l10n]
+        treeherder-group: deb-L10n
diff --git a/taskcluster/ci/repackage-deb/kind.yml b/taskcluster/ci/repackage-deb/kind.yml
new file mode 100644
index 0000000000..aa6381bb4a
--- /dev/null
+++ b/taskcluster/ci/repackage-deb/kind.yml
@@ -0,0 +1,53 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage
+    - gecko_taskgraph.transforms.repackage_routes
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - build-signing
+    - toolchain
+
+only-for-build-platforms:
+    - linux-shippable/opt
+    - linux-devedition/opt
+    - linux64-shippable/opt
+    - linux64-devedition/opt
+
+only-for-attributes:
+    - nightly
+    - shippable
+
+jobs:
+    repackage-deb:
+        from-deps:
+            group-by: single-with-filters
+        shipping-phase: promote
+        worker-type: b-linux-gcp
+        worker:
+            docker-image:
+                in-tree: debian12-repackage
+        mozharness:
+            run-as-root: true
+            use-caches: false
+            config:
+                by-build-platform:
+                    linux\b.*:
+                        - repackage/base.py
+                        - repackage/linux32_signed.py
+                    linux64\b.*:
+                        - repackage/base.py
+                        - repackage/linux64_signed.py
+        treeherder:
+            symbol: Rpk-deb
+        package-formats:
+            by-build-platform:
+                linux.*: [deb]
diff --git a/taskcluster/ci/repackage-l10n/kind.yml b/taskcluster/ci/repackage-l10n/kind.yml
new file mode 100644
index 0000000000..c78b52de2b
--- /dev/null
+++ b/taskcluster/ci/repackage-l10n/kind.yml
@@ -0,0 +1,86 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.repackage_set_upstream_mac_kind
+    - gecko_taskgraph.transforms.repackage_l10n
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - shippable-l10n-signing
+    - shippable-l10n-mac-signing
+    - shippable-l10n-mac-notarization
+    - toolchain
+
+only-for-build-platforms:
+    - linux-shippable/opt
+    - linux64-shippable/opt
+    - macosx64-shippable/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - win64-aarch64-shippable/opt
+    - linux-devedition/opt
+    - linux64-devedition/opt
+    - macosx64-devedition/opt
+    - win32-devedition/opt
+    - win64-devedition/opt
+    - win64-aarch64-devedition/opt
+
+jobs:
+    repackage-l10n:
+        from-deps:
+            group-by: single-with-filters
+        upstream-mac-kind:
+            by-build-type:
+                debug: shippable-l10n-mac-signing
+                default:
+                    by-project:
+                        mozilla-(central|beta|release|esr.*): shippable-l10n-mac-notarization
+                        default: shippable-l10n-mac-signing
+        worker-type: b-linux-gcp
+        mozharness:
+            config:
+                by-build-platform:
+                    linux-.*:
+                        - repackage/base.py
+                        - repackage/linux32_signed.py
+                    linux64-.*:
+                        - repackage/base.py
+                        - repackage/linux64_signed.py
+                    macosx64-.*:
+                        - repackage/base.py
+                        - repackage/osx_signed.py
+                    win32\b.*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win32_signed.py
+                    win64(?!-aarch64)\b.*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win64_signed.py
+                    win64-aarch64\b.*:
+                        - repackage/base.py
+                        - repackage/win64-aarch64_sfx_stub.py
+                        - repackage/win64_signed.py
+        package-formats:
+            by-build-platform:
+                macosx64\b.*:
+                    by-build-type:
+                        # Debug builds can't be attributable
+                        debug: [dmg, mar, pkg]
+                        default: [dmg-attrib, mar, pkg]
+                linux.*: [mar]
+                win32\b.*: [mar, installer]
+                win64\b.*: [mar, installer]
+        fetches:
+            toolchain:
+                - linux64-mar-tools
+                - linux64-upx
+        treeherder-group: L10n-Rpk
diff --git a/taskcluster/ci/repackage-msi/kind.yml b/taskcluster/ci/repackage-msi/kind.yml
new file mode 100644
index 0000000000..fa2fb3ada3
--- /dev/null
+++ b/taskcluster/ci/repackage-msi/kind.yml
@@ -0,0 +1,49 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - repackage-signing
+    - repackage-signing-l10n
+    - fetch
+
+only-for-build-platforms:
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - win32-devedition/opt
+    - win64-devedition/opt
+
+jobs:
+    repackage-msi:
+        worker-type: 'b-win2022'
+        from-deps:
+            group-by: single-with-filters
+        mozharness:
+            use-magic-mh-args: false
+            config:
+                by-build-platform:
+                    win32\b.*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win32_signed.py
+                    win64(?!-aarch64)\b.*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win64_signed.py
+                    win64-aarch64\b.*:
+                        - repackage/base.py
+                        - repackage/win64-aarch64_sfx_stub.py
+                        - repackage/win64_signed.py
+        package-formats: [msi]
+        fetches:
+            fetch:
+                - wix-3.14.0
diff --git a/taskcluster/ci/repackage-msix/kind.yml b/taskcluster/ci/repackage-msix/kind.yml
new file mode 100644
index 0000000000..90e3506f54
--- /dev/null
+++ b/taskcluster/ci/repackage-msix/kind.yml
@@ -0,0 +1,107 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    # We're going to generate tasks based on this.  We `depend` on and fetch the package from this.
+    - build-signing
+    - toolchain
+
+only-for-build-platforms:
+    - win32/opt
+    - win64/opt
+    - win64/debug
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - win32-devedition/opt
+    - win64-devedition/opt
+
+jobs:
+    repackage-msix:
+        from-deps:
+            group-by: platform
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 2700
+        # This is for fast try iteration; `repackage-shippable-l10n-msix` is the "real one".
+        run-on-projects: []
+        mozharness:
+            config:
+                by-build-platform:
+                    win32\b.*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win32_signed.py
+                    win64(?!-aarch64)\b.*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win64_signed.py
+                    win64-aarch64\b.*:
+                        - repackage/base.py
+                        - repackage/win64-aarch64_sfx_stub.py
+                        - repackage/win64_signed.py
+        package-formats: [msix, msix-store]
+        fetches:
+            toolchain:
+                - linux64-msix-packaging
+        msix:
+            vendor: Mozilla
+            channel:
+                by-shipping-product:
+                    devedition: aurora
+                    default:
+                        by-release-type:
+                            beta.*: beta
+                            release.*: official
+                            esr.*: official
+                            default: nightly
+            identity-name:
+                by-shipping-product:
+                    devedition:
+                        by-package-format:
+                            msix: MozillaFirefoxDevedition
+                            msix-store: FirefoxDevedition
+                    default:
+                        by-package-format:
+                            msix:
+                                by-release-type:
+                                    beta.*: MozillaFirefoxBeta
+                                    release.*: MozillaFirefox
+                                    esr.*: MozillaFirefox
+                                    default: MozillaFirefoxNightly
+                            msix-store:
+                                by-release-type:
+                                    beta.*: FirefoxBeta
+                                    release.*: Firefox
+                                    esr.*: Firefox
+                                    default: FirefoxNightly
+            publisher:
+                by-package-format:
+                    msix-store: "CN=082E9164-EE6C-4EC8-B62C-441FAE7BEFA1"
+                    msix:
+                        by-level:
+                            "1": "CN=Mozilla Fake SPC"
+                            "2": "CN=Mozilla Fake SPC"
+                            default:
+                                # This value needs to line up with the signing certificate
+                                # we're going to sign with. We only sign potential release
+                                # or nightly builds with proper certificates, so even on
+                                # level 3 repositories, some build types are expected to
+                                # be signed with our fake certificate.
+                                by-build-platform:
+                                    .*-shippable: "CN=Mozilla Corporation, OU=Firefox Engineering Operations, O=Mozilla Corporation, L=Mountain View, S=California, C=US"
+                                    .*-devedition: "CN=Mozilla Corporation, OU=Firefox Engineering Operations, O=Mozilla Corporation, L=Mountain View, S=California, C=US"
+                                    default: "CN=Mozilla Fake SPC"
+            publisher-display-name:
+                by-package-format:
+                    msix: "Mozilla Corporation"
+                    msix-store: "Mozilla"
diff --git a/taskcluster/ci/repackage-shippable-l10n-msix/kind.yml b/taskcluster/ci/repackage-shippable-l10n-msix/kind.yml
new file mode 100644
index 0000000000..6be2a95bf0
--- /dev/null
+++ b/taskcluster/ci/repackage-shippable-l10n-msix/kind.yml
@@ -0,0 +1,109 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    # We're going to generate tasks based on this.  We `depend` on and fetch the package from this.
+    - build-signing
+    # We're not going to generate tasks based on these.  But we are going to `depend` on and fetch
+    # langpacks from these.
+    - shippable-l10n-signing
+    - toolchain
+
+not-for-kind-dependencies:
+    - shippable-l10n-signing
+
+only-for-build-platforms:
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - win32-devedition/opt
+    - win64-devedition/opt
+
+jobs:
+    repackage-shippable-l10n-msix:
+        from-deps:
+            group-by: platform
+            unique-kinds: false
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 2700
+        mozharness:
+            config:
+                by-build-platform:
+                    win32\b.*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win32_signed.py
+                    win64(?!-aarch64)\b.*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win64_signed.py
+                    win64-aarch64\b.*:
+                        - repackage/base.py
+                        - repackage/win64-aarch64_sfx_stub.py
+                        - repackage/win64_signed.py
+        package-formats: [msix, msix-store]
+        fetches:
+            toolchain:
+                - linux64-msix-packaging
+        msix:
+            vendor: Mozilla
+            channel:
+                by-shipping-product:
+                    devedition: aurora
+                    default:
+                        by-release-type:
+                            beta.*: beta
+                            release.*: official
+                            esr.*: official
+                            default: nightly
+            identity-name:
+                by-shipping-product:
+                    devedition:
+                        by-package-format:
+                            msix: MozillaFirefoxDevedition
+                            msix-store: FirefoxDevedition
+                    default:
+                        by-package-format:
+                            msix:
+                                by-release-type:
+                                    beta.*: MozillaFirefoxBeta
+                                    release.*: MozillaFirefox
+                                    esr.*: MozillaFirefox
+                                    default: MozillaFirefoxNightly
+                            msix-store:
+                                by-release-type:
+                                    beta.*: FirefoxBeta
+                                    release.*: Firefox
+                                    esr.*: Firefox
+                                    default: FirefoxNightly
+            publisher:
+                by-package-format:
+                    msix-store: "CN=082E9164-EE6C-4EC8-B62C-441FAE7BEFA1"
+                    msix:
+                        by-level:
+                            "1": "CN=Mozilla Fake SPC"
+                            "2": "CN=Mozilla Fake SPC"
+                            default:
+                                # This value needs to line up with the signing certificate
+                                # we're going to sign with. We only sign potential release
+                                # or nightly builds with proper certificates, so even on
+                                # level 3 repositories, some build types are expected to
+                                # be signed with our fake certificate.
+                                by-build-platform:
+                                    .*-shippable: "CN=Mozilla Corporation, OU=Firefox Engineering Operations, O=Mozilla Corporation, L=Mountain View, S=California, C=US"
+                                    .*-devedition: "CN=Mozilla Corporation, OU=Firefox Engineering Operations, O=Mozilla Corporation, L=Mountain View, S=California, C=US"
+                                    default: "CN=Mozilla Fake SPC"
+            publisher-display-name:
+                by-package-format:
+                    msix: "Mozilla Corporation"
+                    msix-store: "Mozilla"
diff --git a/taskcluster/ci/repackage-signing-l10n/kind.yml b/taskcluster/ci/repackage-signing-l10n/kind.yml
new file mode 100644
index 0000000000..9d274b1ee3
--- /dev/null
+++ b/taskcluster/ci/repackage-signing-l10n/kind.yml
@@ -0,0 +1,31 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage_signing
+    - gecko_taskgraph.transforms.repackage_routes
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - repackage-l10n
+
+only-for-build-platforms:
+    - win32-shippable/opt
+    - win32-devedition/opt
+    - win32/opt
+    - win64-shippable/opt
+    - win64-devedition/opt
+    - win64/opt
+    - win64-aarch64-shippable/opt
+    - win64-aarch64-devedition/opt
+    - win64-asan-reporter-shippable/opt
+
+jobs:
+    repackage-signing-l10n:
+        from-deps:
+            group-by: single-with-filters
diff --git a/taskcluster/ci/repackage-signing-msi/kind.yml b/taskcluster/ci/repackage-signing-msi/kind.yml
new file mode 100644
index 0000000000..8a6691413a
--- /dev/null
+++ b/taskcluster/ci/repackage-signing-msi/kind.yml
@@ -0,0 +1,27 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - repackage-msi
+
+only-for-build-platforms:
+    - win32-shippable/opt
+    - win32-devedition/opt
+    - win32/opt
+    - win64-shippable/opt
+    - win64-devedition/opt
+    - win64/opt
+
+jobs:
+    repackage-signing-msi:
+        from-deps:
+            group-by: single-with-filters
diff --git a/taskcluster/ci/repackage-signing-msix/kind.yml b/taskcluster/ci/repackage-signing-msix/kind.yml
new file mode 100644
index 0000000000..4976f08366
--- /dev/null
+++ b/taskcluster/ci/repackage-signing-msix/kind.yml
@@ -0,0 +1,19 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - repackage-msix
+
+jobs:
+    repackage-signing-msix:
+        from-deps:
+            group-by: single-with-filters
diff --git a/taskcluster/ci/repackage-signing-shippable-l10n-msix/kind.yml b/taskcluster/ci/repackage-signing-shippable-l10n-msix/kind.yml
new file mode 100644
index 0000000000..0f6f7787ee
--- /dev/null
+++ b/taskcluster/ci/repackage-signing-shippable-l10n-msix/kind.yml
@@ -0,0 +1,18 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - repackage-shippable-l10n-msix
+
+jobs:
+    repackage-signing-shippable-l10n-msix:
+        from-deps: {}
diff --git a/taskcluster/ci/repackage-signing/kind.yml b/taskcluster/ci/repackage-signing/kind.yml
new file mode 100644
index 0000000000..49ea244a9e
--- /dev/null
+++ b/taskcluster/ci/repackage-signing/kind.yml
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage_signing
+    - gecko_taskgraph.transforms.repackage_routes
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - repackage
+
+only-for-build-platforms:
+    - win32-devedition/opt
+    - win32-shippable/opt
+    - win64-devedition/opt
+    - win64-shippable/opt
+    - win64-aarch64-shippable/opt
+    - win64-aarch64-devedition/opt
+    - win64-asan-reporter-shippable/opt
+
+jobs:
+    repackage-signing:
+        from-deps:
+            group-by: single-with-filters
diff --git a/taskcluster/ci/repackage/kind.yml b/taskcluster/ci/repackage/kind.yml
new file mode 100644
index 0000000000..e67ce5566b
--- /dev/null
+++ b/taskcluster/ci/repackage/kind.yml
@@ -0,0 +1,99 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.repackage_set_upstream_mac_kind
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.repackage
+    - gecko_taskgraph.transforms.repackage_routes
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - build-signing
+    - build-mac-signing
+    - build-mac-notarization
+    - toolchain
+
+only-for-build-platforms:
+    - linux-shippable/opt
+    - linux-devedition/opt
+    - linux/opt
+    - linux64-shippable/opt
+    - linux64-devedition/opt
+    - linux64-asan-reporter-shippable/opt
+    - linux64/opt
+    - macosx64-shippable/opt
+    - macosx64-devedition/opt
+    - macosx64/opt
+    - macosx64/debug
+    - macosx64-aarch64/debug
+    - win32-shippable/opt
+    - win32-devedition/opt
+    - win32/opt
+    - win64-shippable/opt
+    - win64-devedition/opt
+    - win64-aarch64-shippable/opt
+    - win64-aarch64-devedition/opt
+    - win64/opt
+    - win64-asan-reporter-shippable/opt
+
+jobs:
+    repackage:
+        from-deps:
+            group-by: single-with-filters
+        upstream-mac-kind:
+            by-build-type:
+                debug: build-mac-signing
+                default:
+                    by-project:
+                        mozilla-(central|beta|release|esr.*): build-mac-notarization
+                        default: build-mac-signing
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time:
+                by-build-platform:
+                    .*asan.*: 2700
+                    default: 900
+        mozharness:
+            config:
+                by-build-platform:
+                    linux\b.*:
+                        - repackage/base.py
+                        - repackage/linux32_signed.py
+                    linux64\b.*:
+                        - repackage/base.py
+                        - repackage/linux64_signed.py
+                    macosx64\b.*:
+                        - repackage/base.py
+                        - repackage/osx_signed.py
+                    win32\b.*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win32_signed.py
+                    win64(?!-aarch64)\b.*:
+                        - repackage/base.py
+                        - repackage/win32_sfx_stub.py
+                        - repackage/win64_signed.py
+                    win64-aarch64\b.*:
+                        - repackage/base.py
+                        - repackage/win64-aarch64_sfx_stub.py
+                        - repackage/win64_signed.py
+        package-formats:
+            by-build-platform:
+                macosx64\b.*:
+                    by-build-type:
+                        # Debug builds can't be attributable
+                        debug: [dmg, mar, pkg]
+                        default: [dmg-attrib, mar, pkg]
+                linux.*: [mar]
+                win32\b.*: [mar, installer]
+                win64\b.*: [mar, installer]
+        fetches:
+            toolchain:
+                - linux64-mar-tools
+                - linux64-upx
diff --git a/taskcluster/ci/repo-update/kind.yml b/taskcluster/ci/repo-update/kind.yml
new file mode 100644
index 0000000000..414c3bd4f8
--- /dev/null
+++ b/taskcluster/ci/repo-update/kind.yml
@@ -0,0 +1,77 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.repo_update:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+
+job-defaults:
+    worker:
+        env:
+            DO_HSTS:
+                by-project:
+                    mozilla-(central|beta|esr.*): "1"
+                    default: ""
+            DO_HPKP:
+                by-project:
+                    mozilla-(central|beta|esr.*): "1"
+                    default: ""
+            DO_REMOTE_SETTINGS:
+                by-project:
+                    mozilla-(central|beta|release|esr.*): "1"
+                    default: ""
+            DO_SUFFIX_LIST:
+                by-project:
+                    mozilla-(central|beta|esr.*): "1"
+                    default: ""
+            DO_MOBILE_EXPERIMENTS:
+                by-project:
+                    mozilla-central: ""  # TODO: enable after firefox-android merge
+                    default: ""
+            USE_MOZILLA_CENTRAL:
+                by-project:
+                    mozilla-central: "1"
+                    default: ""
+
+
+jobs:
+    hsts-hpkp-blocklist:
+        name: periodic_file_update
+        description: HSTS, HPKP and remote settings update
+        run-on-projects: []  # Only run via cron
+        treeherder:
+            kind: build
+            platform: linux64/opt
+            symbol: pfu
+            tier: 1
+        worker-type: b-linux-xlarge-gcp
+        worker:
+            implementation: docker-worker
+            os: linux
+            docker-image: {in-tree: periodic-updates}
+            max-run-time: 14400  # Takes up to 4 hours
+            env:
+                PRODUCT: firefox
+                REVIEWERS: "#release-managers"
+            command:
+                - /runme.sh
+            taskcluster-proxy: true
+            artifacts:
+                - name: 'public/build/nsSTSPreloadList.diff'
+                  path: '/home/worker/artifacts/nsSTSPreloadList.diff'
+                  type: file
+                - name: 'public/build/StaticHPKPins.h.diff'
+                  path: '/home/worker/artifacts/StaticHPKPins.h.diff'
+                  type: file
+                - name: 'public/build/remote-settings.diff'
+                  path: '/home/worker/artifacts/remote-settings.diff'
+                  type: file
+                - name: 'public/build/initial_experiments.diff'
+                  path: '/home/worker/artifacts/initial_experiments.diff'
+                  type: file
+        scopes:
+            - secrets:get:project/releng/gecko/build/level-{level}/arc-phabricator-token
diff --git a/taskcluster/ci/scriptworker-canary/kind.yml b/taskcluster/ci/scriptworker-canary/kind.yml
new file mode 100644
index 0000000000..a1ee225b89
--- /dev/null
+++ b/taskcluster/ci/scriptworker-canary/kind.yml
@@ -0,0 +1,33 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.scriptworker_canary:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    treeherder:
+        platform: firefox-release/opt
+        tier: 1
+        kind: build
+    worker-type: b-linux-gcp
+    worker:
+        docker-image: {in-tree: push-to-try}
+        max-run-time: 1800
+        env:
+            MOZBUILD_STATE_PATH: /builds/worker/workspace
+    run:
+        sparse-profile: push-to-try
+
+jobs:
+    push:
+        description: Push scriptworker canary tasks.
+        treeherder:
+            symbol: Rel(push-scriptworker-canary)
+        run-on-projects: [mozilla-central]
+        addresses: ['release+scriptworker-canary@mozilla.com']
+        ssh-key-secret: project/releng/scriptworker/scriptworker-canary-sshkey
diff --git a/taskcluster/ci/searchfox/kind.yml b/taskcluster/ci/searchfox/kind.yml
new file mode 100644
index 0000000000..98c2235fe1
--- /dev/null
+++ b/taskcluster/ci/searchfox/kind.yml
@@ -0,0 +1,183 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+    - fetch
+
+transforms:
+    - gecko_taskgraph.transforms.build:transforms
+    - gecko_taskgraph.transforms.build_attrs:transforms
+    - gecko_taskgraph.transforms.build_lints:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    index:
+        product: firefox
+    treeherder:
+        symbol: Searchfox(idx)
+        kind: build
+        tier: 2
+    run-on-projects: ['mozilla-central']
+    optimization: null
+    use-system-python: false
+    # These builds don't use sccache because otherwise we wouldn't index
+    # the files that sccache optimizes away compilation for.
+    use-sccache: false
+
+jobs:
+    linux64-searchfox/debug:
+        description: "Linux64 Debug Searchfox"
+        index:
+            job-name: linux64-searchfox-debug
+        treeherder:
+            platform: linux64/debug
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 10800
+            env:
+                PERFHERDER_EXTRA_OPTIONS: searchfox
+                MOZSEARCH_PLATFORM: "linux"
+        run:
+            using: mozharness
+            actions: [build]
+            config:
+                - builds/releng_base_firefox.py
+                - builds/releng_sub_linux_configs/64_searchfox_and_debug.py
+            script: "mozharness/scripts/fx_desktop_build.py"
+            tooltool-downloads: public
+            keep-artifacts: false
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-nasm
+                - linux64-node
+                - linux64-rust
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-pkgconf
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+
+    macosx64-searchfox/debug:
+        description: "MacOS X x64 Debug Cross-compile Searchfox"
+        index:
+            job-name: macosx64-searchfox-debug
+        treeherder:
+            platform: osx-cross/debug
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 10800
+            env:
+                PERFHERDER_EXTRA_OPTIONS: searchfox
+                MOZSEARCH_PLATFORM: "macosx"
+        run:
+            using: mozharness
+            actions: [get-secrets, build]
+            config:
+                - builds/releng_base_firefox.py
+                - builds/releng_base_mac_64_cross_builds.py
+            script: "mozharness/scripts/fx_desktop_build.py"
+            custom-build-variant-cfg: cross-debug-searchfox
+            secrets: true
+            keep-artifacts: false
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-hfsplus
+                - linux64-libdmg
+                - linux64-nasm
+                - linux64-node
+                - linux64-rust-cross
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - macosx64-sdk
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+
+    win64-searchfox/debug:
+        description: "Win64 Searchfox Debug (clang-cl)"
+        index:
+            job-name: win64-searchfox-debug
+        treeherder:
+            platform: windows2012-64/debug
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 10800
+            env:
+                PERFHERDER_EXTRA_OPTIONS: searchfox
+                MOZSEARCH_PLATFORM: "windows"
+        run:
+            using: mozharness
+            options: [append-env-variables-from-configs]
+            actions: [get-secrets, build]
+            script: mozharness/scripts/fx_desktop_build.py
+            secrets: true
+            config:
+                - builds/releng_base_firefox.py
+                - builds/releng_base_linux_64_builds.py
+                - builds/taskcluster_sub_win64/searchfox_debug.py
+            extra-config:
+                mozconfig_platform: win64
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-rust-cross
+                - linux64-rust-size
+                - linux64-nasm
+                - linux64-node
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-wine
+                - linux64-winchecksec
+                - nsis
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+                - vs
+                - windows-rs
+            fetch:
+                - upx-3.95-win
+
+    android-armv7-searchfox/debug:
+        description: "Android ARMv7 Debug Searchfox"
+        index:
+            job-name: android-armv7-searchfox-debug
+        treeherder:
+            platform: android-4-1-armv7/debug
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: android-build}
+            max-run-time: 10800
+            env:
+                PERFHERDER_EXTRA_OPTIONS: searchfox
+                MOZSEARCH_PLATFORM: "android-armv7"
+                GRADLE_USER_HOME: "/builds/worker/checkouts/gecko/mobile/android/gradle/dotgradle-offline"
+                TOOLTOOL_MANIFEST: "mobile/android/config/tooltool-manifests/android/releng.manifest"
+        run:
+            using: mozharness
+            actions: [get-secrets, build]
+            config:
+                - builds/releng_base_android_64_builds.py
+            script: "mozharness/scripts/fx_desktop_build.py"
+            secrets: true
+            custom-build-variant-cfg: arm-debug-searchfox
+            tooltool-downloads: internal
+        fetches:
+            toolchain:
+                - android-gradle-dependencies
+                - android-ndk-linux
+                - android-sdk-linux
+                - linux64-jdk
+                - linux64-clang
+                - linux64-rust-cross
+                - linux64-rust-size
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-nasm
+                - linux64-node
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
diff --git a/taskcluster/ci/sentry/kind.yml b/taskcluster/ci/sentry/kind.yml
new file mode 100644
index 0000000000..bfc3cf07a2
--- /dev/null
+++ b/taskcluster/ci/sentry/kind.yml
@@ -0,0 +1,34 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.sentry:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+jobs:
+    mach-release:
+        description: Inform Sentry of new revisions (aka Mach releases)
+        worker-type: b-linux-gcp
+        worker:
+            taskcluster-proxy: true
+            max-run-time: 3600
+            docker-image: {in-tree: sentry}
+            env:
+                HG_PUSHLOG_URL: "{head_repository}/json-pushes?version=2&changeset={head_rev}"
+                SENTRY_SECRET: "project/engwf/gecko/{level}/tokens"
+        scopes:
+            - "secrets:get:project/engwf/gecko/{level}/tokens"
+        run:
+            using: run-task
+            checkout: false
+            command: /bin/bash /usr/bin/submit_sentry_release.sh
+        run-on-projects: ['mozilla-central']
+        treeherder:
+            symbol: Sentry(mach-release)
+            platform: other/opt
+            tier: 2
+            kind: other
diff --git a/taskcluster/ci/shippable-l10n-mac-notarization/kind.yml b/taskcluster/ci/shippable-l10n-mac-notarization/kind.yml
new file mode 100644
index 0000000000..461eac91ac
--- /dev/null
+++ b/taskcluster/ci/shippable-l10n-mac-notarization/kind.yml
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.mac_notarization
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.upstream_artifact_task
+    - gecko_taskgraph.transforms.shippable_l10n_signing
+    - gecko_taskgraph.transforms.signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - shippable-l10n-mac-signing
+
+only-for-attributes:
+    - shippable
+
+jobs:
+    shippable-l10n-mac-notarization:
+        from-deps:
+            group-by: chunk-locales
+            copy-attributes: true
+        max-run-time: 1800
+        treeherder:
+            symbol: BMN
diff --git a/taskcluster/ci/shippable-l10n-mac-signing/kind.yml b/taskcluster/ci/shippable-l10n-mac-signing/kind.yml
new file mode 100644
index 0000000000..21fe44b4f0
--- /dev/null
+++ b/taskcluster/ci/shippable-l10n-mac-signing/kind.yml
@@ -0,0 +1,31 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.shippable_l10n_signing
+    - gecko_taskgraph.transforms.signing
+    - gecko_taskgraph.transforms.hardened_signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - shippable-l10n
+
+only-for-build-platforms:
+    - macosx64-shippable/opt
+    - macosx64-devedition/opt
+    - macosx64/opt
+    - macosx64/debug
+
+jobs:
+    shippable-l10n-mac-signing:
+        from-deps:
+            group-by: chunk-locales
+        treeherder:
+            symbol: BMS
+        attributes:
+            shipping_phase: promote
diff --git a/taskcluster/ci/shippable-l10n-signing/kind.yml b/taskcluster/ci/shippable-l10n-signing/kind.yml
new file mode 100644
index 0000000000..fdb545381f
--- /dev/null
+++ b/taskcluster/ci/shippable-l10n-signing/kind.yml
@@ -0,0 +1,31 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.name_sanity
+    - gecko_taskgraph.transforms.upstream_artifact_task
+    - gecko_taskgraph.transforms.shippable_l10n_signing
+    - gecko_taskgraph.transforms.signing
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - shippable-l10n
+
+only-for-attributes:
+    - shippable
+    - nightly
+
+not-for-build-platforms:
+    - macosx64-shippable/opt
+    - macosx64-devedition/opt
+    - macosx64/opt
+    - macosx64/debug
+
+jobs:
+    shippable-l10n-signing:
+        from-deps:
+            group-by: chunk-locales
diff --git a/taskcluster/ci/shippable-l10n/kind.yml b/taskcluster/ci/shippable-l10n/kind.yml
new file mode 100644
index 0000000000..d38edb2ee5
--- /dev/null
+++ b/taskcluster/ci/shippable-l10n/kind.yml
@@ -0,0 +1,199 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.l10n
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - build
+    - build-signing
+    - fetch
+    - repackage
+    - toolchain
+
+only-for-build-platforms:
+    - linux64-shippable/opt
+    - linux-shippable/opt
+    - macosx64-shippable/opt
+    - win32-shippable/opt
+    - win64-shippable/opt
+    - win64-aarch64-shippable/opt
+    - linux64-devedition/opt
+    - linux-devedition/opt
+    - macosx64-devedition/opt
+    - win32-devedition/opt
+    - win64-devedition/opt
+    - win64-aarch64-devedition/opt
+
+jobs:
+    shippable-l10n:
+        description: Localization
+        from-deps:
+            group-by: platform
+        locales-file: browser/locales/l10n-changesets.json
+        locales-per-chunk: 5
+        run-on-projects: ['release']
+        attributes:
+            shipping_phase: promote
+        ignore-locales:
+            by-build-platform:
+                # OSX has a special locale for japanese
+                macosx64.*: [ja]
+                default: [ja-JP-mac]
+        run-time: 1800
+        fetches:
+            toolchain:
+                by-build-platform:
+                    default: []
+                    macosx64.*:
+                        - linux64-libdmg
+                        - linux64-hfsplus
+                    win.*:
+                        - linux64-wine
+                        - nsis
+            fetch:
+                by-build-platform:
+                    default: []
+                    win.*:
+                        - upx-3.95-win
+        tooltool:
+            by-build-platform:
+                default: internal
+                linux.*: public
+        index:
+            type: shippable-l10n
+            product:
+                by-build-platform:
+                    default: firefox
+                    .*-devedition: devedition
+            job-name:
+                by-build-platform:
+                    linux-shippable: linux-opt
+                    linux64-shippable: linux64-opt
+                    macosx64-shippable: macosx64-opt
+                    win32-shippable: win32-opt
+                    win64-shippable: win64-opt
+                    win64-aarch64-shippable: win64-aarch64-opt
+                    linux-devedition: linux-devedition-opt
+                    linux64-devedition: linux64-devedition-opt
+                    macosx64-devedition: macosx64-devedition-opt
+                    win32-devedition: win32-devedition-opt
+                    win64-devedition: win64-devedition-opt
+                    win64-aarch64-devedition: win64-aarch64-devedition-opt
+        worker-type: b-linux-gcp
+        treeherder:
+            symbol: L10n(B)
+            tier: 1
+            platform:
+                by-build-platform:
+                    linux64-shippable: linux64-shippable/opt
+                    linux-shippable: linux32-shippable/opt
+                    macosx64-shippable: osx-shippable/opt
+                    win32-shippable: windows2012-32-shippable/opt
+                    win64-shippable: windows2012-64-shippable/opt
+                    win64-aarch64-shippable: windows2012-aarch64-shippable/opt
+                    linux64-devedition: linux64-devedition/opt
+                    linux-devedition: linux32-devedition/opt
+                    macosx64-devedition: osx-cross-devedition/opt
+                    win32-devedition: windows2012-32-devedition/opt
+                    win64-devedition: windows2012-64-devedition/opt
+                    win64-aarch64-devedition: windows2012-aarch64-devedition/opt
+        env:
+            by-build-platform:
+                linux.*:    # linux64 and 32 get same treatment here
+                    EN_US_PACKAGE_NAME: target.tar.bz2
+                    EN_US_BINARY_URL:
+                        artifact-reference: <build-signing/{artifact_prefix}>
+                macosx64.*:
+                    EN_US_PACKAGE_NAME: target.dmg
+                    EN_US_BINARY_URL:
+                        artifact-reference: <repackage/{artifact_prefix}>
+                win.*:
+                    EN_US_PACKAGE_NAME: target.zip
+                    EN_US_BINARY_URL:
+                        artifact-reference: <build-signing/{artifact_prefix}>
+        mozharness:
+            config:
+                by-build-platform:
+                    linux-shippable:
+                        - single_locale/firefox.py
+                        - single_locale/linux32.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_linux_common.py
+                        - taskcluster_nightly.py
+                    linux64-shippable:
+                        - single_locale/firefox.py
+                        - single_locale/linux64.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_linux_common.py
+                        - taskcluster_nightly.py
+                    macosx64-shippable:
+                        - single_locale/firefox.py
+                        - single_locale/macosx64.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_macosx64.py
+                        - taskcluster_nightly.py
+                    win32-shippable:
+                        - single_locale/firefox.py
+                        - single_locale/win32.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_win32.py
+                        - taskcluster_nightly.py
+                    win64-shippable:
+                        - single_locale/firefox.py
+                        - single_locale/win64.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_win64.py
+                        - taskcluster_nightly.py
+                    win64-aarch64-shippable:
+                        - single_locale/firefox.py
+                        - single_locale/win64-aarch64.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_win64.py
+                        - taskcluster_nightly.py
+                    linux-devedition:
+                        - single_locale/devedition.py
+                        - single_locale/linux32.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_linux_common.py
+                        - taskcluster_nightly.py
+                    linux64-devedition:
+                        - single_locale/devedition.py
+                        - single_locale/linux64.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_linux_common.py
+                        - taskcluster_nightly.py
+                    macosx64-devedition:
+                        - single_locale/devedition.py
+                        - single_locale/macosx64.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_macosx64.py
+                        - taskcluster_nightly.py
+                    win32-devedition:
+                        - single_locale/devedition.py
+                        - single_locale/win32.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_win32.py
+                        - taskcluster_nightly.py
+                    win64-devedition:
+                        - single_locale/devedition.py
+                        - single_locale/win64.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_win64.py
+                        - taskcluster_nightly.py
+                    win64-aarch64-devedition:
+                        - single_locale/devedition.py
+                        - single_locale/win64-aarch64.py
+                        - single_locale/tc_common.py
+                        - single_locale/tc_win64.py
+                        - taskcluster_nightly.py
+            # no default, so we fail on new entries
+            actions: ['clone-locales', 'list-locales', 'setup', 'repack',
+                      'summary']
+            script: mozharness/scripts/desktop_l10n.py
diff --git a/taskcluster/ci/snap-upstream-build/kind.yml b/taskcluster/ci/snap-upstream-build/kind.yml
new file mode 100644
index 0000000000..7016989ba8
--- /dev/null
+++ b/taskcluster/ci/snap-upstream-build/kind.yml
@@ -0,0 +1,218 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+    - fetch
+
+transforms:
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    attributes:
+        cron: true
+    treeherder:
+        kind: build
+        tier: 2
+        symbol: B
+    worker-type: b-linux-gcp
+    run:
+        checkout: true
+    worker:
+        artifacts:
+            - name: public/build
+              type: directory
+              path: /builds/worker/artifacts/
+        docker-image: {in-tree: snap-build-core22}
+        max-run-time: 900
+        env:
+            UPLOAD_DIR: artifacts
+            MOZ_STACKWALK_SYMBOLS_SERVER: '1'
+    fetches:
+        toolchain:
+            - linux64-minidump-stackwalk
+
+jobs:
+    amd64-nightly/opt:
+        description: Build Firefox Nightly as a Snap using upstream definition
+        attributes:
+            build_platform: linux64-snap-upstream-nightly
+            build_type: opt
+        index:
+            product: firefox
+            job-name: amd64-nightly
+            type: generic
+        worker:
+            max-run-time: 9000
+        run:
+            using: run-task
+            command: >-
+              ./run.sh nightly
+        treeherder:
+            platform: linux64-snap-amd64-nightly/opt
+
+    amd64-nightly/debug:
+        description: Build Firefox Nightly (debug) as a Snap using upstream definition
+        attributes:
+            build_platform: linux64-snap-upstream-nightly
+            build_type: debug
+        index:
+            product: firefox
+            job-name: amd64-nightly-debug
+            type: generic
+        worker:
+            max-run-time: 7200
+        run:
+            using: run-task
+            command: >-
+              ./run.sh nightly 1
+        treeherder:
+            platform: linux64-snap-amd64-nightly/debug
+
+    amd64-beta/opt:
+        description: Build Firefox Beta as a Snap using upstream definition
+        attributes:
+            build_platform: linux64-snap-upstream-beta
+            build_type: opt
+        index:
+            product: firefox
+            job-name: amd64-beta
+            type: generic
+        worker:
+            max-run-time: 9000
+        run:
+            using: run-task
+            command: >-
+              ./run.sh beta
+        treeherder:
+            platform: linux64-snap-amd64-beta/opt
+
+    amd64-beta/debug:
+        description: Build Firefox Beta (debug) as a Snap using upstream definition
+        attributes:
+            build_platform: linux64-snap-upstream-beta
+            build_type: debug
+        index:
+            product: firefox
+            job-name: amd64-beta-debug
+            type: generic
+        worker:
+            max-run-time: 7200
+        run:
+            using: run-task
+            command: >-
+              ./run.sh beta 1
+        treeherder:
+            platform: linux64-snap-amd64-beta/debug
+
+    amd64-stable/opt:
+        description: Build Firefox Stable as a Snap using upstream definition
+        attributes:
+            build_platform: linux64-snap-upstream-stable
+            build_type: opt
+        index:
+            product: firefox
+            job-name: amd64-stable
+            type: generic
+        worker:
+            max-run-time: 9000
+        run:
+            using: run-task
+            command: >-
+              ./run.sh stable
+        treeherder:
+            platform: linux64-snap-amd64-stable/opt
+
+    amd64-stable/debug:
+        description: Build Firefox Stable (debug) as a Snap using upstream definition
+        attributes:
+            build_platform: linux64-snap-upstream-stable
+            build_type: debug
+        index:
+            product: firefox
+            job-name: amd64-stable-debug
+            type: generic
+        worker:
+            max-run-time: 7200
+        run:
+            using: run-task
+            command: >-
+              ./run.sh stable 1
+        treeherder:
+            platform: linux64-snap-amd64-stable/debug
+
+    amd64-esr/opt:
+        description: Build Firefox ESR as a Snap using upstream definition
+        attributes:
+            build_platform: linux64-snap-upstream-esr
+            build_type: opt
+        index:
+            product: firefox
+            job-name: amd64-esr
+            type: generic
+        worker:
+            max-run-time: 9000
+        run:
+            using: run-task
+            command: >-
+              ./run.sh esr
+        treeherder:
+            platform: linux64-snap-amd64-esr/opt
+
+    amd64-esr/debug:
+        description: Build Firefox ESR (debug) as a Snap using upstream definition
+        attributes:
+            build_platform: linux64-snap-upstream-esr
+            build_type: debug
+        index:
+            product: firefox
+            job-name: amd64-esr-debug
+            type: generic
+        worker:
+            max-run-time: 7200
+        run:
+            using: run-task
+            command: >-
+              ./run.sh esr 1
+        treeherder:
+            platform: linux64-snap-amd64-esr/debug
+
+    amd64-try/opt:
+        description: Build Firefox Nightly as a Snap using upstream definition and try repo
+        attributes:
+            build_platform: linux64-snap-upstream-try
+            build_type: opt
+        index:
+            product: firefox
+            job-name: amd64-try
+            type: generic
+        worker:
+            max-run-time: 9000
+        run:
+            using: run-task
+            command: >-
+              ./run.sh try
+        treeherder:
+            platform: linux64-snap-amd64-try/opt
+
+    amd64-try/debug:
+        description: Build Firefox Nightly (debug) as a Snap using upstream definition and try repo
+        attributes:
+            build_platform: linux64-snap-upstream-try
+            build_type: debug
+        index:
+            product: firefox
+            job-name: amd64-try-debug
+            type: generic
+        worker:
+            max-run-time: 7200
+        run:
+            using: run-task
+            command: >-
+              ./run.sh try 1
+        treeherder:
+            platform: linux64-snap-amd64-try/debug
diff --git a/taskcluster/ci/snap-upstream-test/kind.yml b/taskcluster/ci/snap-upstream-test/kind.yml
new file mode 100644
index 0000000000..585a1fca1f
--- /dev/null
+++ b/taskcluster/ci/snap-upstream-test/kind.yml
@@ -0,0 +1,73 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+only-for-attributes:
+    - build_platform
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+    - gecko_taskgraph.transforms.snap_test
+
+kind-dependencies:
+    - snap-upstream-build
+
+job-defaults:
+    attributes:
+        retrigger: true
+        cron: true
+    treeherder:
+        kind: test
+        tier: 2
+    run:
+        using: run-task
+        checkout: false
+    worker:
+        max-run-time: 900
+        env:
+            WAYLAND_DISPLAY: 'wayland-0'
+        artifacts:
+            - name: public/build
+              type: directory
+              path: builds/worker/artifacts/
+
+jobs:
+    basic:
+        from-deps:
+            group-by: single-with-filters
+        description: Runs basic tests on a Firefox Snap package
+        worker-type: t-linux-wayland
+        run:
+            command: >-
+              export TASKCLUSTER_ROOT_DIR=$PWD && cd $MOZ_FETCHES_DIR/ && ./tests.sh --basic
+        fetches:
+            snap-upstream-build:
+                - firefox.snap
+                - snap-tests.zip
+        treeherder:
+            platform: linux64/opt
+            symbol: Sel(basic)
+        attributes:
+            snap_test_type: basic
+
+    qa:
+        from-deps:
+            group-by: single-with-filters
+        description: Runs some QA tests on a Firefox Snap package
+        worker-type: t-linux-wayland
+        run:
+            command: >-
+              export TASKCLUSTER_ROOT_DIR=$PWD && cd $MOZ_FETCHES_DIR/ && ./tests.sh --qa
+        fetches:
+            snap-upstream-build:
+                - firefox.snap
+                - snap-tests.zip
+        treeherder:
+            platform: linux64/opt
+            symbol: Sel(QA)
+        attributes:
+            snap_test_type: qa
diff --git a/taskcluster/ci/source-test/clang.yml b/taskcluster/ci/source-test/clang.yml
new file mode 100644
index 0000000000..d77066afe7
--- /dev/null
+++ b/taskcluster/ci/source-test/clang.yml
@@ -0,0 +1,117 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    run-on-projects: ["trunk"]
+    platform: linux64/debug
+    worker-type: t-linux-xlarge-source
+    attributes:
+        code-review: true
+    worker:
+        docker-image: {in-tree: static-analysis-build}
+        max-run-time: 5400
+    treeherder:
+        kind: other
+        tier: 2
+    run:
+        using: run-task
+        tooltool-downloads: public
+    fetches:
+        toolchain:
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+    when:
+        files-changed:
+            - '**/*.c'
+            - '**/*.cpp'
+            - '**/*.cc'
+            - '**/*.cxx'
+            - '**/*.m'
+            - '**/*.mm'
+
+tidy:
+    description: Run static-analysis (clang-tidy) on C/C++ patches
+    treeherder:
+        symbol: cpp(clang-tidy)
+    run:
+        cwd: '{checkout}'
+        command: >-
+            source taskcluster/scripts/misc/source-test-clang-setup.sh &&
+            ./mach --log-no-times static-analysis check --outgoing --output $HOME/clang-tidy.json --format json
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-clang-tidy
+            - linux64-rust
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    worker:
+        artifacts:
+            - type: file
+              name: public/code-review/clang-tidy.json
+              path: /builds/worker/clang-tidy.json
+
+format:
+    description: Run clang-format on C/C++ patches
+    treeherder:
+        symbol: cpp(clang-format)
+    # Run only on try and code-review tasks
+    # to avoid running clang format on the whole codebase
+    run-on-projects: []
+    run:
+        cwd: '{checkout}'
+        command: >-
+            source taskcluster/scripts/misc/source-test-clang-setup.sh &&
+            ./mach --log-no-times clang-format --outgoing --output $HOME/clang-format.json --format json &&
+            ./mach --log-no-times clang-format --outgoing --output $HOME/clang-format.diff --format diff
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-clang-tidy
+            - linux64-rust
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    when:
+        files-changed:
+            - '**/*.c'
+            - '**/*.cpp'
+            - '**/*.cc'
+            - '**/*.cxx'
+            - '**/*.m'
+            - '**/*.mm'
+            - '**/*.h'
+            - '**/*.hh'
+            - '**/*.hpp'
+            - '**/*.hxx'
+    worker:
+        artifacts:
+            - type: file
+              name: public/code-review/clang-format.json
+              path: /builds/worker/clang-format.json
+            - type: file
+              name: public/code-review/clang-format.diff
+              path: /builds/worker/clang-format.diff
+
+external:
+    description: Run static-analysis (clang-tidy) on C/C++ patches with external checks
+    treeherder:
+        symbol: cpp(clang-tidy-external)
+    run:
+        cwd: '{checkout}'
+        command: >-
+            source taskcluster/scripts/misc/source-test-clang-setup.sh &&
+            ./mach --log-no-times static-analysis check --checks="-*,mozilla-civet-*" --outgoing --output $HOME/clang-tidy.json --format json
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-clang-tidy-external
+            - linux64-rust
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    worker:
+        artifacts:
+            - type: file
+              name: public/code-review/clang-tidy.json
+              path: /builds/worker/clang-tidy.json
diff --git a/taskcluster/ci/source-test/cram.yml b/taskcluster/ci/source-test/cram.yml
new file mode 100644
index 0000000000..6e29e7c6a6
--- /dev/null
+++ b/taskcluster/ci/source-test/cram.yml
@@ -0,0 +1,21 @@
+---
+tryselect:
+    description: tools/tryselect integration tests
+    platform: linux1804-64/opt
+    treeherder:
+        symbol: cram(try)
+        kind: test
+        tier: 2
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+    run:
+        using: mach
+        mach: cramtest tools/tryselect
+    always-target: true
+    when:
+        files-changed:
+            - testing/mach_commands.py
+            - third_party/python/cram/**
+            - tools/tryselect/**
diff --git a/taskcluster/ci/source-test/doc.yml b/taskcluster/ci/source-test/doc.yml
new file mode 100644
index 0000000000..3e0459f8f0
--- /dev/null
+++ b/taskcluster/ci/source-test/doc.yml
@@ -0,0 +1,75 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+generate:
+    description: Generate the Sphinx documentation
+    platform: doc/opt
+    treeherder:
+        symbol: doc(generate)
+        kind: test
+        tier: 1
+    run-on-projects: ['trunk']
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+        env:
+            LC_ALL: C
+        artifacts:
+            - type: file
+              name: public/docs.tar.gz
+              path: /builds/worker/checkouts/gecko/docs-out/main.tar.gz
+            - type: file
+              name: public/trees.json
+              path: /builds/worker/artifacts/trees.json
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            cp -r /build/node_modules_eslint node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
+            ./mach doc --outdir docs-out --no-open --no-serve --archive --fatal-warnings --check-num-warnings --dump-trees=/builds/worker/artifacts/trees.json
+        sparse-profile: sphinx-docs
+    optimization:
+        skip-unless-schedules: [docs]
+
+upload:
+    description: Generate and upload the Sphinx documentation
+    platform: doc/opt
+    attributes:
+        code-review: true
+    treeherder:
+        symbol: doc(upload)
+        kind: test
+        tier: 2
+    run-on-projects: [mozilla-central-only]
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+        env:
+            LC_ALL: C
+            MOZ_SOURCE_DOCS_USE_GOOGLE: "1"
+        taskcluster-proxy: true
+        artifacts:
+            - type: file
+              name: public/firefox-source-docs-url.txt
+              path: /builds/worker/firefox-source-docs-url.txt
+            - type: file
+              name: public/trees.json
+              path: /builds/worker/artifacts/trees.json
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            cp -r /build/node_modules_eslint node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
+            ./mach doc --upload --no-open --no-serve --fatal-warnings --write-url /builds/worker/firefox-source-docs-url.txt --dump-trees=/builds/worker/artifacts/trees.json
+        sparse-profile: sphinx-docs
+    scopes:
+        - secrets:get:project/releng/gecko/build/level-{level}/gecko-docs-upload
+    optimization:
+        skip-unless-schedules: [docs]
diff --git a/taskcluster/ci/source-test/file-metadata.yml b/taskcluster/ci/source-test/file-metadata.yml
new file mode 100644
index 0000000000..b1fffaf64f
--- /dev/null
+++ b/taskcluster/ci/source-test/file-metadata.yml
@@ -0,0 +1,126 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: lint/opt
+    treeherder:
+        kind: other
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        artifacts:
+            - type: directory
+              path: /builds/worker/artifacts
+              name: public
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+    run:
+        using: mach
+
+bugzilla-components:
+    description: Generate metadata about source files and Bugzilla
+    treeherder:
+        symbol: Bugzilla
+        tier: 1
+    index:
+        product: source
+        job-name: source-bugzilla-info
+    run:
+        mach: file-info bugzilla-automation /builds/worker/artifacts
+    worker:
+        max-run-time: 1800
+    run-on-projects: ['autoland', 'mozilla-central']
+
+test-info-xorigin:
+    description: Generate test manifest metadata for tests disabled on cross-origin
+    treeherder:
+        symbol: test-info(xorigin)
+        tier: 2
+    index:
+        product: source
+        job-name: test-info-xorigin
+    worker:
+        docker-image: {in-tree: debian12-amd64-build}
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-clang-tidy
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >-
+            source taskcluster/scripts/misc/source-test-common.sh &&
+            ./mach test-info report --show-tests --show-summary --filter-keys=fail-if,fails-if,random-if,skip-if --filter-values='(?<!!)xorigin' --output-file /builds/worker/artifacts/test-info-xorigin.json
+
+test-info-disabled-by-os:
+    description: Generate test manifest metadata for tests disabled on each operating system
+    treeherder:
+        symbol: test-info(disabled-by-os)
+        tier: 2
+    index:
+        product: source
+        job-name: test-info-disabled-by-os
+    worker:
+        docker-image: {in-tree: debian12-amd64-build}
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-clang-tidy
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >-
+            source taskcluster/scripts/misc/source-test-common.sh &&
+            ./mach test-info report --show-tests --show-summary --filter-keys=fail-if,fails-if,random-if,skip-if --filter-values='(?<!!)(android|android_version|Android|AndroidVersion|geckoview|emulator|device)' --output-file /builds/worker/artifacts/test-info-disabled-on-android.json &&
+            ./mach test-info report --show-tests --show-summary --filter-keys=fail-if,fails-if,random-if,skip-if --filter-values='(?<!!)(linux|Linux)' --output-file /builds/worker/artifacts/test-info-disabled-on-linux.json &&
+            ./mach test-info report --show-tests --show-summary --filter-keys=fail-if,fails-if,random-if,skip-if --filter-values='(?<!!)(osx|OSX|mac)' --output-file /builds/worker/artifacts/test-info-disabled-on-mac.json &&
+            ./mach test-info report --show-tests --show-summary --filter-keys=fail-if,fails-if,random-if,skip-if --filter-values='(?<!!)(win|Windows|WINNT)' --output-file /builds/worker/artifacts/test-info-disabled-on-windows.json
+
+test-info-all:
+    description: Generate global test manifest metadata
+    treeherder:
+        symbol: test-info(all)
+        tier: 2
+    index:
+        product: source
+        job-name: test-info-all
+    worker:
+        docker-image: {in-tree: debian12-amd64-build}
+        max-run-time: 5400
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-clang-tidy
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >-
+            source taskcluster/scripts/misc/source-test-common.sh &&
+            ./mach test-info testrun-report --output-file /builds/worker/artifacts/test-run-info.json &&
+            ./mach test-info report --show-tests --show-summary --show-testruns --verbose --output-file /builds/worker/artifacts/test-info-all-tests.json --runcounts-input-file /builds/worker/artifacts/test-run-info.json &&
+            ./mach test-info report --show-annotations --output-file /builds/worker/artifacts/test-info-manifest-conditions.json
diff --git a/taskcluster/ci/source-test/jsshell.yml b/taskcluster/ci/source-test/jsshell.yml
new file mode 100644
index 0000000000..2ce0a846d4
--- /dev/null
+++ b/taskcluster/ci/source-test/jsshell.yml
@@ -0,0 +1,87 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: linux64-shippable/opt
+    require-build:
+        linux64.*: build-linux64-shippable/opt
+    worker-type:
+        by-platform:
+            linux64.*: t-linux-talos-1804
+    worker:
+        by-platform:
+            linux64.*:
+                env:
+                    by-shell:
+                        sm:
+                            SHELL: /bin/bash
+                            JSSHELL: js
+                        v8:
+                            SHELL: /bin/bash
+                            JSSHELL: d8/release/d8
+                max-run-time: 3600
+    treeherder:
+        kind: test
+        tier: 2
+    run:
+        using: mach
+        mach: jsshell-bench --perfherder={shell} --binary=$MOZ_FETCHES_DIR/$JSSHELL {test}
+    run-on-projects:
+        by-shell:
+            sm:
+                by-test-platform:
+                    (linux|windows|macos)(?!.*shippable).*: []
+                    default: ['mozilla-central', 'integration']
+            default:
+                by-test-platform:
+                    (linux|windows|macos)(?!.*shippable).*: []
+                    default: ['mozilla-central']
+    fetches:
+        build:
+            - target.jsshell.zip
+        toolchain:
+            - linux64-custom-v8
+    optimization:
+        skip-unless-expanded: null
+
+bench-ares6:
+    description: Ares6 JavaScript shell benchmark suite
+    shell: ['sm', 'v8']
+    test: ares6
+    treeherder:
+        symbol: ares6
+
+bench-sixspeed:
+    description: Six-Speed JavaScript shell benchmark suite
+    shell: ['sm', 'v8']
+    test: six-speed
+    treeherder:
+        symbol: 6speed
+
+bench-sunspider:
+    description: SunSpider JavaScript shell benchmark suite
+    shell: ['sm']
+    test: sunspider
+    treeherder:
+        symbol: sunspider
+
+bench-web-tooling:
+    description: Web Tooling shell benchmark suite
+    shell: ['sm', 'v8']
+    test: web-tooling-benchmark
+    treeherder:
+        symbol: webtool
+    fetches:
+        fetch:
+            - web-tooling-benchmark
+
+bench-octane:
+    description: Octane shell benchmark suite
+    shell: ['sm', 'v8']
+    test: octane
+    treeherder:
+        symbol: octane
+    fetches:
+        fetch:
+            - octane
diff --git a/taskcluster/ci/source-test/kind.yml b/taskcluster/ci/source-test/kind.yml
new file mode 100644
index 0000000000..bb605e939a
--- /dev/null
+++ b/taskcluster/ci/source-test/kind.yml
@@ -0,0 +1,45 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.try_job:transforms
+    - gecko_taskgraph.transforms.source_test:transforms
+    - taskgraph.transforms.task_context
+    - gecko_taskgraph.transforms.release_notifications:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - fetch
+    - toolchain
+    - build
+
+jobs-from:
+    - clang.yml
+    - cram.yml
+    - doc.yml
+    - file-metadata.yml
+    - jsshell.yml
+    - mozlint.yml
+    - mozlint-android.yml
+    - node.yml
+    - puppeteer.yml
+    - python.yml
+    - shadow-scheduler.yml
+    - taskgraph.yml
+    - vendor.yml
+    - webidl.yml
+    - webcompat.yml
+    - wpt-manifest.yml
+    - wpt-metadata.yml
+
+job-defaults:
+    use-system-python: false
+    attributes:
+        retrigger: true
+    task-context:
+        from-object: {}
+        substitution-fields: []
diff --git a/taskcluster/ci/source-test/mozlint-android.yml b/taskcluster/ci/source-test/mozlint-android.yml
new file mode 100644
index 0000000000..6602d8c818
--- /dev/null
+++ b/taskcluster/ci/source-test/mozlint-android.yml
@@ -0,0 +1,106 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+
+# Just one TC job that runs all the lints.  There's no real advantage
+# to running them separately, and this way we perform the expensive
+# clone and somewhat expensive compilation of the Android
+# intermediates just once.
+lints:
+    always-target: true
+    attributes:
+        build_platform: android
+        build_type: opt
+        code-review: true
+    description: Android lints
+    platform: lint/opt
+    treeherder:
+        symbol: A(lints)
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: android-build}
+        env:
+            GRADLE_USER_HOME: /builds/worker/checkouts/gecko/mobile/android/gradle/dotgradle-offline
+            MOZCONFIG: mobile/android/config/mozconfigs/android-arm/nightly-android-lints
+            MOZ_OBJDIR: obj-firefox
+            PERFHERDER_EXTRA_OPTIONS: android-lints
+            TINDERBOX_OUTPUT: '1'
+        max-run-time: 3600
+        artifacts:
+            - type: file
+              name: public/code-review/mozlint.json
+              path: /builds/worker/mozlint.json
+            - name: public/android/geckoview/api.txt
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/intermediates/javac/withGeckoBinariesDebug/classes/api.txt
+              type: file
+            - name: public/android/geckoview/api.txt.map
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/intermediates/javac/withGeckoBinariesDebug/classes/api.txt.map
+              type: file
+            - name: public/android/geckoview/apilint-result.json
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/intermediates/javac/withGeckoBinariesDebug/classes/apilint-result.json
+              type: file
+            - name: public/android/geckoview/javadoc-results.json
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/reports/javadoc-results-withGeckoBinariesDebug.json
+              type: file
+            - name: public/geckoview/unittest
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/reports/tests
+              type: directory
+            - name: public/android/lint/lint-results-officialWithoutGeckoBinariesDebug.html
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/reports/lint-results-withGeckoBinariesDebug.html
+              type: file
+            - name: public/android/lint/lint-results-withGeckoBinariesDebug.xml
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/reports/lint-results-withGeckoBinariesDebug.xml
+              type: file
+            - name: public/android/checkstyle/checkstyle.html
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/reports/checkstyle/withGeckoBinariesDebug.html
+              type: file
+            - name: public/android/checkstyle/checkstyle.xml
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/reports/checkstyle/withGeckoBinariesDebug.xml
+              type: file
+    run:
+        using: run-task
+        command: >
+            ln -s $MOZ_FETCHES_DIR/android-gradle-dependencies $GECKO_PATH &&
+            ln -s $MOZ_FETCHES_DIR/android-sdk-linux $GECKO_PATH &&
+            ln -s $MOZ_FETCHES_DIR/node $GECKO_PATH &&
+            cd $GECKO_PATH &&
+            ./mach --log-no-times build pre-export export &&
+            ./mach --log-no-times lint -f treeherder -f json:/builds/worker/mozlint.json
+            --linter android-api-lint
+            --linter android-format
+            --linter android-javadoc
+            --linter android-checkstyle
+            --linter android-lint
+            --linter android-test
+            *
+        tooltool-downloads: internal  # For internal toolchains.
+    fetches:
+        toolchain:
+            # Aliases aren't allowed for toolchains installed by fetch.
+            - linux64-android-gradle-dependencies
+            - linux64-android-sdk-linux-repack
+            - linux64-jdk-repack
+            - linux64-node
+    when:
+        files-changed:
+            # Source files.
+            - 'mobile/android/**/*.java'
+            - 'mobile/android/**/*.kt'
+            # Resources.
+            - 'mobile/android/**/*.jpeg'
+            - 'mobile/android/**/*.jpg'
+            - 'mobile/android/**/*.png'
+            - 'mobile/android/**/*.svg'
+            - 'mobile/android/**/*.xml'
+            # Build stuff.
+            - 'mobile/android/**/Makefile.in'
+            - 'mobile/android/config/**'
+            - 'mobile/android/gradle.configure'
+            - 'mobile/android/**/moz.build'
+            - '**/*.gradle'
+            # Other misc lint related files.
+            - 'python/mozlint/**'
+            - 'tools/lint/**'
diff --git a/taskcluster/ci/source-test/mozlint.yml b/taskcluster/ci/source-test/mozlint.yml
new file mode 100644
index 0000000000..28f2381827
--- /dev/null
+++ b/taskcluster/ci/source-test/mozlint.yml
@@ -0,0 +1,609 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    always-target: true
+    attributes:
+        code-review: true
+    treeherder:
+        kind: test
+        tier: 1
+    platform: lint/opt
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+        artifacts:
+            - type: file
+              name: public/code-review/mozlint.json
+              path: /builds/worker/mozlint.json
+    run:
+        using: mach
+    when:
+        files-changed:
+            # Other misc lint related files.
+            - 'python/mozlint/**'
+            - 'tools/lint/**'
+
+codespell:
+    description: Checks for misspellings in text files
+    treeherder:
+        symbol: text(spell)
+        # We don't want patches to be backed out because of a typo, a follow up bug will be
+        # good enough
+        tier: 2
+    run:
+        mach: lint -v -l codespell -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.js'
+            - '**/*.jsm'
+            - '**/*.jxs'
+            - '**/*.mjs'
+            - '**/*.xml'
+            - '**/*.html'
+            - '**/*.xhtml'
+            - '**/*.cpp'
+            - '**/*.c'
+            - '**/*.h'
+            - '**/*.configure'
+            - '**/*.py'
+            - '**/*.properties'
+            - '**/*.rst'
+            - '**/*.ftl'
+            - 'tools/lint/codespell.yml'
+
+
+rejected-words:
+    description: Reject some words we don't want to use in the code base
+    treeherder:
+        symbol: text(rejected-words)
+        # We don't want patches to be backed out because of this, a follow up bug will be
+        # good enough
+        tier: 2
+    run:
+        mach: lint -v -l rejected-words -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.js'
+            - '**/*.jsm'
+            - '**/*.jxs'
+            - '**/*.mjs'
+            - '**/*.xml'
+            - '**/*.html'
+            - '**/*.xhtml'
+            - '**/*.cpp'
+            - '**/*.c'
+            - '**/*.h'
+            - '**/*.idl'
+            - '**/*.webidl'
+            - '**/*.configure'
+            - '**/*.py'
+            - '**/*.properties'
+            - '**/*.rst'
+            - '**/*.ftl'
+            - '**/*.java'
+            - '**/*.kt'
+            - 'tools/lint/rejected-words.yml'
+
+eslint:
+    description: JS lint check
+    treeherder:
+        symbol: js(ES)
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            cp -r /build/node_modules_eslint node_modules &&
+            cp -r /build/node_modules_eslint-plugin-mozilla/ tools/lint/eslint/eslint-plugin-mozilla/node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
+            ./mach lint -v -l eslint -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            # Files that are likely audited.
+            - '**/*.js'
+            - '**/*.jsm'
+            - '**/*.json'
+            - '**/*.jsx'
+            - '**/*.mjs'
+            - '**/*.sjs'
+            - '**/*.html'
+            - '**/*.xhtml'
+            - '**/*.xml'
+            - 'tools/lint/eslint.yml'
+            # Run when eslint policies change.
+            - '**/.eslintignore'
+            - '**/*eslintrc*'
+            # The plugin implementing custom checks.
+            - 'tools/lint/eslint/eslint-plugin-mozilla/**'
+            - 'tools/lint/eslint/eslint-plugin-spidermonkey-js/**'
+
+eslint-build:
+    description: ESLint checks with build data
+    always-target: false
+    # Triggered by cron task, don't run on any projects and disable optimization.
+    run-on-projects: []
+    when: null
+    attributes:
+        code-review: false
+    treeherder:
+        symbol: js(ES-B)
+        tier: 2
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            export MOZ_XPT_ARTIFACTS_DIR="$MOZ_FETCHES_DIR/$MOZ_XPT_ARTIFACTS_DIRNAME" &&
+            find "$MOZ_XPT_ARTIFACTS_DIR" &&
+            cp -r /build/node_modules_eslint node_modules &&
+            cp -r /build/node_modules_eslint-plugin-mozilla/ tools/lint/eslint/eslint-plugin-mozilla/node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
+            ./mach lint -v -l eslint -f treeherder --quiet -f json:/builds/worker/mozlint.json . --rule "mozilla/valid-services-property: error" --rule "mozilla/valid-ci-uses: error"
+    worker:
+        env:
+            MOZ_XPT_ARTIFACTS_DIRNAME: xpt_artifacts
+    require-build:
+        .*: build-linux64/opt
+    fetches:
+        build:
+            - artifact: target.xpt_artifacts.zip
+              dest: xpt_artifacts
+
+stylelint:
+    description: CSS lint check
+    treeherder:
+        symbol: stylelint
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            cp -r /build/node_modules_eslint node_modules &&
+            ./mach lint -v -l stylelint -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            # Files that are likely audited.
+            - '**/*.css'
+            - 'tools/lint/styleint.yml'
+            # Run when stylelint policies change.
+            - '**/.stylelintignore'
+            - '**/*stylelintrc*'
+
+license:
+    description: Check for license blocks in source files.
+    treeherder:
+        symbol: pedantic(license)
+    run:
+        mach: lint -v -l license -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.c'
+            - '**/*.cc'
+            - '**/*.cpp'
+            - '**/*.css'
+            - '**/*.dtd'
+            - '**/*.ftl'
+            - '**/*.h'
+            - '**/*.html'
+            - '**/*.idl'
+            - '**/*.js'
+            - '**/*.jsm'
+            - '**/*.jsx'
+            - '**/*.m'
+            - '**/*.mjs'
+            - '**/*.mm'
+            - '**/*.properties'
+            - '**/*.py'
+            - '**/*.rs'
+            - '**/*.svg'
+            - '**/*.webidl'
+            - '**/*.xhtml'
+            - '**/*.xml'
+            - 'tools/lint/license.yml'
+
+lintpref:
+    description: Check for duplicates between all.js and StaticPrefList.yaml.
+    treeherder:
+        symbol: misc(pref)
+    run:
+        mach: lint -v -l lintpref -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - 'modules/libpref/init/all.js'
+            - 'modules/libpref/init/StaticPrefList.yaml'
+            - 'browser/app/profile/firefox.js'
+            - 'devtools/client/preferences/debugger.js'
+            - 'mobile/android/app/geckoview-prefs.js'
+            - 'browser/branding/official/pref/firefox-branding.js'
+            - 'browser/branding/nightly/pref/firefox-branding.js'
+            - 'browser/branding/unofficial/pref/firefox-branding.js'
+            - 'browser/branding/aurora/pref/firefox-branding.js'
+            - 'browser/app/profile/channel-prefs.js'
+            - 'mobile/android/installer/mobile-l10n.js'
+            - 'mobile/android/locales/en-US/mobile-l10n.js'
+            - 'tools/lint/lintpref.yml'
+
+mingw-cap:
+    description: lint for MinGW Capitalization issues
+    treeherder:
+        symbol: misc(mingw)
+    run:
+        mach: lint -v -l mingw-capitalization -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.cpp'
+            - '**/*.cc'
+            - '**/*.c'
+            - '**/*.h'
+            - 'tools/lint/mingw-capitalization.yml'
+
+updatebot:
+    description: Ensure moz.yaml files are valid per schema
+    treeherder:
+        symbol: misc(mozyaml)
+    run:
+        mach: lint -v -l updatebot -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/moz.yaml'
+
+mscom-init:
+    description: Lint for Microsoft COM initialization
+    treeherder:
+        symbol: misc(mscom)
+    run:
+        mach: lint -v -l mscom-init -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.cpp'
+            - '**/*.cc'
+            - '**/*.c'
+            - '**/*.h'
+            - 'tools/lint/mscom-init.yml'
+
+py-black:
+    description: black run over the gecko codebase
+    treeherder:
+        symbol: py(black)
+    run:
+        mach: lint -v -l black -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            # The list of extensions should match tools/lint/black.yml
+            - '**/*.py'
+            - '**/moz.build'
+            - '**/*.configure'
+            - '**/*.mozbuild'
+            - 'pyproject.toml'
+            - 'tools/lint/black.yml'
+
+py-ruff:
+    description: Run ruff over the gecko codebase
+    treeherder:
+        symbol: py(ruff)
+    run:
+        mach: lint -v -l ruff -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.py'
+            - '**/*.configure'
+            - '**/.ruff.toml'
+            - 'pyproject.toml'
+            - 'tools/lint/ruff.yml'
+            - 'tools/lint/python/ruff.py'
+            - 'tools/lint/python/ruff_requirements.txt'
+
+test-manifest:
+    description: lint test manifests
+    treeherder:
+        symbol: misc(tm)
+    run:
+        mach: lint -v -l test-manifest-alpha -l test-manifest-disable -l test-manifest-skip-if -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.toml'
+            - 'python/mozlint/**'
+            - 'tools/lint/**'
+            - 'tools/lint/test-disable.yml'
+
+wptlint-gecko:
+    description: web-platform-tests linter
+    treeherder:
+        symbol: misc(W)
+    run:
+        mach: lint -v -l wpt -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - 'testing/web-platform/tests/**'
+            - 'testing/web-platform/mozilla/tests/**'
+            - 'tools/lint/wpt.yml'
+
+yaml:
+    description: yamllint run over the gecko codebase
+    treeherder:
+        symbol: pedantic(yaml)
+    run:
+        mach: lint -v -l yaml -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.yml'
+            - '**/*.yaml'
+            - '**/.ymllint'
+
+rst:
+    description: rst lint run over the gecko codebase
+    treeherder:
+        symbol: text(rst)
+    run:
+        mach: lint -v -l rst -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.rst'
+            - 'tools/lint/rst.yml'
+
+shellcheck:
+    description: shellcheck run over the gecko codebase
+    treeherder:
+        symbol: misc(shell)
+    run:
+        mach: lint -v -l shellcheck -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.sh'
+            - 'tools/lint/shellcheck.yml'
+
+
+localization:
+    description: l10n tests for strings with errors
+    treeherder:
+        symbol: l10n(l1nt)
+    run:
+        mach: lint -v -l l10n -f treeherder *
+    attributes:
+        code-review: false
+    when:
+        files-changed:
+            - '**/locales/en-US/**'
+            - '**/l10n.toml'
+            - 'third_party/python/compare-locales/**'
+            - 'third_party/python/fluent/**'
+            - 'tools/lint/l10n.yml'
+
+
+l10n-conflicts:
+    description: l10n tests for strings with errors and conflicts with cross-channel
+    treeherder:
+        symbol: l10n(l1nt-conflicts)
+    always-target: false
+    run-on-projects: []
+    run:
+        mach: lint -W -l l10n -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/locales/en-US/**'
+            - '**/l10n.toml'
+            - 'third_party/python/compare-locales/**'
+            - 'third_party/python/fluent/**'
+            - 'tools/lint/l10n.yml'
+
+
+clang-format:
+    description: clang-format on the C/C++ code
+    treeherder:
+        symbol: cpp(clang-format)
+    run:
+        mach: lint -v -l clang-format -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.cpp'
+            - '**/*.c'
+            - '**/*.cc'
+            - '**/*.h'
+            - '**/*.m'
+            - '**/*.mm'
+            - 'tools/lint/clang-format.yml'
+    dependencies:
+        linux64-clang-tidy: toolchain-linux64-clang-tidy
+    fetches:
+        linux64-clang-tidy:
+            - artifact: clang-tidy.tar.zst
+              dest: clang-tools
+
+
+rustfmt:
+    description: rustfmt on the Rust code
+    treeherder:
+        symbol: rust(rustfmt)
+    run:
+        mach: lint -v -l rustfmt -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.rs'
+            - 'tools/lint/rustfmt.yml'
+    fetches:
+        toolchain:
+            - linux64-rust
+
+
+clippy:
+    description: clippy on the Rust code
+    treeherder:
+        symbol: rust(clippy)
+    run:
+        mach: lint -v -l clippy -f treeherder -f json:/builds/worker/mozlint.json -j 1 .
+    when:
+        files-changed:
+            - '**/*.rs'
+            - '**/Cargo.toml'
+            - 'tools/lint/clippy.yml'
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-rust-size
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-sccache
+            - linux64-nasm
+            - linux64-node
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+
+file-whitespace:
+    description: Check for trailing whitespaces and Windows CR
+    platform: lint/opt
+    treeherder:
+        symbol: pedantic(file-whitespace)
+        # We don't want patches to be backed out because of this, a follow up bug will be
+        # good enough
+        tier: 2
+    run:
+        mach: lint -v -l file-whitespace -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.c'
+            - '**/*.cc'
+            - '**/*.cpp'
+            - '**/*.css'
+            - '**/*.dtd'
+            - '**/*.idl'
+            - '**/*.ftl'
+            - '**/*.h'
+            - '**/*.html'
+            - '**/*.json'
+            - '**/*.md'
+            - '**/*.mn'
+            - '**/*.properties'
+            - '**/*.py'
+            - '**/*.rs'
+            - '**/*.rst'
+            - '**/*.toml'
+            - '**/*.webidl'
+            - '**/*.yaml'
+            - '**/*.yml'
+            - '**/*.xhtml'
+
+
+file-perm:
+    description: Check for incorrect permissions on source files
+    platform: lint/opt
+    treeherder:
+        symbol: pedantic(file-perm)
+        # We don't want patches to be backed out because of this, a follow up bug will be
+        # good enough
+        tier: 2
+    run:
+        mach: lint -v -l file-perm -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.build'
+            - '**/*.c'
+            - '**/*.cc'
+            - '**/*.cpp'
+            - '**/*.flac'
+            - '**/*.h'
+            - '**/*.html'
+            - '**/*.idl'
+            - '**/*.js'
+            - '**/*.jsm'
+            - '**/*.json'
+            - '**/*.jsx'
+            - '**/*.m'
+            - '**/*.m4s'
+            - '**/*.md'
+            - '**/*.mjs'
+            - '**/*.mm'
+            - '**/*.mn'
+            - '**/*.mozbuild'
+            - '**/*.mp4'
+            - '**/*.png'
+            - '**/*.rs'
+            - '**/*.rst'
+            - '**/*.svg'
+            - '**/*.toml'
+            - '**/*.ttf'
+            - '**/*.wasm'
+            - '**/*.webidl'
+            - '**/*.xhtml'
+            - '**/*.xml'
+            - '**/*.yaml'
+            - '**/*.yml'
+
+
+perfdocs-verify:
+    description: Verifies Performance Testing documentation
+    treeherder:
+        symbol: text(perfdocs)
+    run:
+        mach: lint -v -l perfdocs -f treeherder -f json:/builds/worker/mozlint.json .
+    worker:
+        env:
+            WORKSPACE: /builds/worker/checkouts/gecko/
+            DECISION_TASK_ID: {task-reference: <decision>}
+        artifacts:
+            - type: file
+              name: public/perfdocs.diff
+              path: /builds/worker/diff.txt
+    when:
+        files-changed:
+            - 'devtools/perfdocs/**'
+            - 'taskcluster/**'
+            - '**/perftest.toml'
+            - 'python/mozperftest/**'
+            - 'testing/awsy/**'
+            - 'testing/raptor/**'
+            - 'testing/talos/**'
+            - 'testing/performance/**'
+            - 'testing/perfdocs/**'
+            - 'tools/lint/perfdocs.yml'
+
+condprof-addons-verify:
+    description: |
+      Verifies all xpi files needed by condprof customization sideloading addons are
+      included in the firefox-addons fetch task.
+    treeherder:
+        symbol: misc(condprof-addons)
+    run:
+        mach: |
+            lint -v -l condprof-addons -f treeherder -f json:/builds/worker/mozlint.json .
+    fetches:
+        fetch:
+            - firefox-addons
+    when:
+        files-changed:
+            - 'testing/condprofile/condprof/customization/*.json'
+            - 'taskcluster/ci/fetch/browsertime.yml'
+
+fluent-lint:
+    description: Check for problems with Fluent files.
+    platform: lint/opt
+    treeherder:
+        symbol: l10n(fluent)
+    run:
+        mach: lint --linter fluent-lint -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.ftl'
+            - 'tools/lint/fluent-lint.yml'
+            - 'tools/lint/fluent-lint/exclusions.yml'
+
+trojan-source:
+    description: Trojan Source attack - CVE-2021-42572
+    platform: lint/opt
+    treeherder:
+        symbol: misc(trojan-source)
+    run:
+        mach: lint -v -l trojan-source --include-third-party -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.c'
+            - '**/*.cc'
+            - '**/*.cpp'
+            - '**/*.h'
+            - '**/*.py'
+            - '**/*.rs'
+            - 'tools/lint/trojan-source.yml'
diff --git a/taskcluster/ci/source-test/node.yml b/taskcluster/ci/source-test/node.yml
new file mode 100644
index 0000000000..f1df46b73d
--- /dev/null
+++ b/taskcluster/ci/source-test/node.yml
@@ -0,0 +1,186 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+newtab-unit-tests:
+    description: newtab unit tests
+    platform: linux1804-64/opt
+    treeherder:
+        symbol: node(newtab)
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "ubuntu1804-test"}
+        max-run-time: 1800
+    require-build:
+        by-project:
+            autoland:
+                linux1804-64/opt: build-linux64/opt
+            try:
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64/opt: build-linux64-shippable/opt
+    run:
+        using: run-task
+        cache-dotcache: true
+        cwd: '{checkout}'
+        command: >
+            cd /builds/worker/checkouts/gecko &&
+            rm -rf node_modules &&
+            npm ci &&
+            cd /builds/worker/checkouts/gecko/browser/components/aboutwelcome &&
+            rm -rf node_modules &&
+            npm ci &&
+            cd /builds/worker/checkouts/gecko/browser/components/asrouter &&
+            rm -rf node_modules &&
+            npm ci &&
+            cd /builds/worker/checkouts/gecko/browser/components/newtab &&
+            rm -rf node_modules &&
+            npm ci &&
+            node bin/try-runner.js
+    when:
+        files-changed:
+            - "browser/components/newtab/**"
+            - "browser/components/aboutwelcome/**"
+            - "browser/components/asrouter/**"
+
+newtab-unit-tests-ccov:
+    description: newtab unit tests code coverage
+    platform: linux1804-64/opt
+    treeherder:
+        symbol: node(newtab-ccov)
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "ubuntu1804-test"}
+        max-run-time: 1800
+        artifacts:
+            - name: public/code-coverage-grcov.zip
+              path: /builds/worker/checkouts/gecko/browser/components/newtab/logs/coverage/code-coverage-grcov.zip
+              type: file
+    require-build:
+        by-project:
+            try:
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64/opt: build-linux64-shippable/opt
+    run:
+        using: run-task
+        cache-dotcache: true
+        cwd: '{checkout}'
+        command: >
+            cd /builds/worker/checkouts/gecko &&
+            rm -rf node_modules &&
+            npm ci &&
+            cd /builds/worker/checkouts/gecko/browser/components/aboutwelcome &&
+            rm -rf node_modules &&
+            npm ci &&
+            cd /builds/worker/checkouts/gecko/browser/components/asrouter &&
+            rm -rf node_modules &&
+            npm ci &&
+            cd /builds/worker/checkouts/gecko/browser/components/newtab &&
+            rm -rf node_modules &&
+            npm ci &&
+            node bin/try-runner.js
+    # This should only run on mozilla-central, as the bot will only parse mozilla-central
+    # coverage anyways.
+    run-on-projects: ["mozilla-central"]
+    # Note the lack of a "when" rule here. This is to avoid seeing fluctuating
+    # coverage on coverage.moz.tools / searchfox depending on whether the latest
+    # push contained patches touching these files or not.
+
+devtools-tests:
+    description: devtools node-based tests (for instance jest)
+    platform: linux1804-64/opt
+    attributes:
+        code-review: true
+    treeherder:
+        symbol: node(devtools)
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+        artifacts:
+            - type: file
+              name: public/code-review/issues.json
+              path: /builds/worker/issues.json
+    run:
+        using: run-task
+        cache-dotcache: true
+        cwd: '{checkout}'
+        # Re-use rather than re-installing to avoid hitting/requiring
+        # nodejs servers for downloads
+        command: >
+            cp -r /build/node_modules_eslint node_modules &&
+            cp -r /build/node_modules_eslint-plugin-mozilla/ tools/lint/eslint/eslint-plugin-mozilla/node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
+            cd devtools/client/bin/ &&
+            node devtools-node-test-runner.js --suite=all --artifact=/builds/worker/issues.json
+    when:
+        files-changed:
+            - 'devtools/client/**'
+            - 'devtools/shared/**'
+
+devtools-verify-bundle:
+    description: devtools bundle checker
+    platform: linux1804-64/opt
+    attributes:
+        code-review: true
+    treeherder:
+        symbol: node(devtools-bundle)
+        kind: test
+        tier: 2
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1200
+        artifacts:
+            - type: file
+              name: public/code-review/issues.json
+              path: /builds/worker/issues.json
+    run:
+        using: run-task
+        cache-dotcache: true
+        cwd: '{checkout}'
+        # Re-use rather than re-installing to avoid hitting/requiring
+        # nodejs servers for downloads
+        command: >
+            cp -r /build/node_modules_eslint node_modules &&
+            cp -r /build/node_modules_eslint-plugin-mozilla/ tools/lint/eslint/eslint-plugin-mozilla/node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
+            cd devtools/client/debugger &&
+            yarn &&
+            node bin/bundle.js &&
+            cd ../../.. &&
+            ./mach python taskcluster/scripts/misc/verify-devtools-bundle.py --output /builds/worker/issues.json
+    when:
+        files-changed:
+            - 'devtools/**'
+
+eslint-plugin-mozilla:
+    description: eslint-plugin-mozilla integration tests
+    platform: linux1804-64/opt
+    treeherder:
+        symbol: node(epm)
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+    run:
+        using: run-task
+        cache-dotcache: true
+        cwd: '{checkout}/tools/lint/eslint/eslint-plugin-mozilla'
+        command: >
+            cp -r /build/node_modules_eslint-plugin-mozilla node_modules &&
+            npm run test
+    when:
+        files-changed:
+            - 'tools/lint/eslint/eslint-plugin-mozilla/**'
diff --git a/taskcluster/ci/source-test/puppeteer.yml b/taskcluster/ci/source-test/puppeteer.yml
new file mode 100644
index 0000000000..3bfd1a9645
--- /dev/null
+++ b/taskcluster/ci/source-test/puppeteer.yml
@@ -0,0 +1,52 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: linux1804-64/opt
+    require-build:
+        by-project:
+            try:
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64/opt: build-linux64-shippable/opt
+    fetches:
+        build:
+            - target.tar.bz2
+        toolchain:
+            - linux64-node
+    treeherder:
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: ubuntu1804-test}
+        max-run-time: 3600
+        artifacts:
+            - type: file
+              name: public/remote/pup_errorsummary.json
+              path: /builds/worker/pup_errorsummary.json
+    optimization:
+        skip-unless-expanded: null
+
+puppeteer:
+    description: Puppeteer tests against Firefox CDP-based remote protocol
+    treeherder:
+        symbol: Pup(cdp)
+    run:  # Bug 1651542: Use screenshot feature to warm-up the font cache before the actual test
+        using: run-task
+        command: >
+            cd $GECKO_PATH/ &&
+            $MOZ_FETCHES_DIR/firefox/firefox --screenshot http://example.org &&
+            ./mach puppeteer-test --ci -vv --binary $MOZ_FETCHES_DIR/firefox/firefox --cdp --headless --log-tbpl - --log-errorsummary /builds/worker/pup_errorsummary.json
+
+puppeteer-with-bidi:
+    description: Puppeteer tests against Firefox Webdriver BiDi remote protocol
+    treeherder:
+        symbol: Pup(wd)
+    run:  # Bug 1651542: Use screenshot feature to warm-up the font cache before the actual test
+        using: run-task
+        command: >
+            cd $GECKO_PATH/ &&
+            $MOZ_FETCHES_DIR/firefox/firefox --screenshot http://example.org &&
+            ./mach puppeteer-test --ci -vv --binary $MOZ_FETCHES_DIR/firefox/firefox --headless --log-tbpl - --log-errorsummary /builds/worker/pup_errorsummary.json
diff --git a/taskcluster/ci/source-test/python.yml b/taskcluster/ci/source-test/python.yml
new file mode 100644
index 0000000000..3fd8b25b32
--- /dev/null
+++ b/taskcluster/ci/source-test/python.yml
@@ -0,0 +1,636 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: linux1804-64/opt
+    always-target:
+        by-platform:
+            macosx.*: false
+            default: true
+    worker-type:
+        by-platform:
+            linux1804-64.*: t-linux-xlarge-source
+            macosx1015-64.*: t-osx-1015-r8
+            windows11-64.*: win11-64-2009-source
+    worker:
+        by-platform:
+            linux1804-64.*:
+                docker-image: {in-tree: "lint"}
+                max-run-time: 3600
+            macosx.*:
+                max-run-time: 3600
+                env:
+                    PATH: "/usr/local/bin:/bin:/sbin:/usr/bin:/usr/sbin"
+            default:
+                max-run-time: 3600
+    treeherder:
+        kind: test
+        tier: 1
+    run:
+        using: mach
+    when:
+        files-changed:
+            - 'config/mozunit/**'
+            - 'python/mach_commands.py'
+
+firefox-ci:
+    description: taskcluster/gecko_taskgraph unit tests
+    always-target: false
+    python-version: [3]
+    treeherder:
+        symbol: ci
+    run:
+        using: python-test
+        subsuite: ci
+    when:
+        files-changed:
+            - '.taskcluster.yml'
+            - 'taskcluster/ci/**'
+            - 'taskcluster/**/*.py'
+            - 'tools/tryselect/selectors/auto.py'
+
+fog:
+    description: Python unit tests for Firefox on Glean
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: fp
+    run:
+        using: python-test
+        subsuite: fog
+    when:
+        files-changed:
+            - 'toolkit/components/glean/**'
+
+mach:
+    description: python/mach unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: mach
+    run:
+        using: python-test
+        subsuite: mach
+    when:
+        files-changed:
+            - 'python/mach/**'
+            - 'python/sites/**'
+
+marionette-harness:
+    description: testing/marionette/harness unit tests
+    platform:
+        - linux1804-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: mnh
+    run:
+        using: python-test
+        subsuite: marionette-harness
+    when:
+        files-changed:
+            - 'testing/marionette/harness/**'
+            - 'testing/mozbase/mozlog/mozlog/**'
+            - 'testing/mozbase/mozlog/setup.py'
+
+mochitest-harness:
+    description: testing/mochitest unittests
+    platform:
+        - linux1804-64/opt
+        - linux1804-64/debug
+        - linux1804-64-asan/opt
+    always-target: false
+    require-build:
+        by-project:
+            try:
+                linux1804-64-asan/opt: build-linux64-asan/opt
+                linux1804-64/debug: build-linux64/debug
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64-asan/opt: build-linux64-asan/opt
+                linux1804-64/debug: build-linux64/debug
+                linux1804-64/opt: build-linux64-shippable/opt
+    treeherder:
+        symbol: py3(mch)
+    worker:
+        by-platform:
+            linux1804-64.*:
+                docker-image: {in-tree: "ubuntu1804-test"}
+                max-run-time: 3600
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            source /builds/worker/scripts/xvfb.sh &&
+            start_xvfb '1600x1200x24' 0 &&
+            export GECKO_BINARY_PATH=$MOZ_FETCHES_DIR/firefox/firefox &&
+            export TEST_HARNESS_ROOT=$MOZ_FETCHES_DIR/tests &&
+            ./mach python-test --subsuite mochitest
+    fetches:
+        build:
+            - target.tar.bz2
+            - artifact: target.common.tests.tar.gz
+              dest: tests
+            - artifact: target.mochitest.tests.tar.gz
+              dest: tests
+        toolchain:
+            - linux64-fix-stacks
+    when:
+        files-changed:
+            - 'testing/mochitest/**'
+            - 'testing/mozbase/mozrunner/mozrunner/**'
+            - 'testing/mozbase/moztest/moztest/selftest/**'
+            - 'testing/mozharness/mozharness/base/log.py'
+            - 'testing/mozharness/mozharness/mozilla/structuredlog.py'
+            - 'testing/mozharness/mozharness/mozilla/testing/errors.py'
+            - 'testing/profiles/**'
+
+
+mozbase:
+    description: testing/mozbase unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: mb
+    run:
+        using: python-test
+        subsuite: mozbase
+    when:
+        files-changed:
+            - 'testing/mozbase/**'
+
+mozharness:
+    description: mozharness integration tests
+    treeherder:
+        symbol: py3(mh)
+    run:
+        using: run-task
+        cache-dotcache: true
+        cwd: '{checkout}/testing/mozharness'
+        command: >
+            /usr/local/bin/tox -e py311-hg6.4
+    when:
+        files-changed:
+            - 'testing/mozharness/**'
+
+mozlint:
+    description: python/mozlint unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: mozlint
+        tier: 2
+    run:
+        using: python-test
+        subsuite: mozlint
+    dependencies:
+        clang-tidy:
+            by-platform:
+                linux1804-64/opt: toolchain-linux64-clang-tidy
+                macosx1015-64/opt: toolchain-macosx64-clang-tidy
+                windows11-64/opt: toolchain-win64-clang-tidy
+    fetches:
+        toolchain:
+            by-platform:
+                linux1804-64/opt:
+                    - linux64-node
+                    - linux64-rust
+                macosx1015-64/opt:
+                    - macosx64-node
+                    - macosx64-rust
+                windows11-64/opt:
+                    - win64-node
+                    - win64-rust
+        clang-tidy:
+            - artifact: clang-tidy.tar.zst
+              dest: clang-tools
+    when:
+        files-changed:
+            - 'python/mozlint/**'
+            - 'tools/lint/**'
+
+mozrelease:
+    description: python/mozrelease unit tests
+    python-version: [3]
+    treeherder:
+        symbol: release
+    run:
+        using: python-test
+        subsuite: mozrelease
+    when:
+        files-changed:
+            - 'python/mozrelease/**'
+
+mozterm:
+    description: python/mozterm unit tests
+    platform:
+        - linux1804-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: term
+    run:
+        using: python-test
+        subsuite: mozterm
+    when:
+        files-changed:
+            - 'python/mozterm/**'
+
+mozversioncontrol:
+    description: python/mozversioncontrol unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: vcs
+    run:
+        using: python-test
+        subsuite: mozversioncontrol
+    when:
+        files-changed:
+            - 'python/mozversioncontrol/**'
+
+raptor:
+    description: testing/raptor unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: rap
+    run:
+        using: python-test
+        subsuite: raptor
+    when:
+        files-changed:
+            - 'testing/raptor/**'
+
+reftest-harness:
+    description: layout/tools/reftest unittests
+    platform:
+        - linux1804-64/opt
+        - linux1804-64/debug
+        - linux1804-64-asan/opt
+    require-build:
+        by-project:
+            try:
+                linux1804-64-asan/opt: build-linux64-asan/opt
+                linux1804-64/debug: build-linux64/debug
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64-asan/opt: build-linux64-asan/opt
+                linux1804-64/debug: build-linux64/debug
+                linux1804-64/opt: build-linux64-shippable/opt
+    always-target: false
+    treeherder:
+        symbol: py3(ref)
+    worker:
+        by-platform:
+            linux1804-64.*:
+                docker-image: {in-tree: "ubuntu1804-test"}
+                max-run-time: 3600
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            source /builds/worker/scripts/xvfb.sh &&
+            start_xvfb '1600x1200x24' 0 &&
+            export GECKO_BINARY_PATH=$MOZ_FETCHES_DIR/firefox/firefox &&
+            export TEST_HARNESS_ROOT=$MOZ_FETCHES_DIR/tests &&
+            ./mach python-test --subsuite reftest
+    fetches:
+        build:
+            - target.tar.bz2
+            - artifact: target.common.tests.tar.gz
+              dest: tests
+            - artifact: target.reftest.tests.tar.gz
+              dest: tests
+        toolchain:
+            - linux64-fix-stacks
+    when:
+        files-changed:
+            - 'layout/tools/reftest/**'
+            - 'testing/mozbase/mozrunner/mozrunner/**'
+            - 'testing/mozbase/moztest/moztest/selftest/**'
+            - 'testing/mozharness/mozharness/base/log.py'
+            - 'testing/mozharness/mozharness/mozilla/structuredlog.py'
+            - 'testing/mozharness/mozharness/mozilla/testing/errors.py'
+
+taskgraph-tests:
+    description: taskcluster/gecko_taskgraph unit tests
+    python-version: [3]
+    treeherder:
+        symbol: tg
+    run:
+        using: python-test
+        subsuite: taskgraph
+    when:
+        files-changed:
+            - 'taskcluster/**/*.py'
+            - 'python/mach/**/*.py'
+
+tryselect:
+    description: tools/tryselect unit tests
+    platform:
+        - linux1804-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: try
+    run:
+        using: python-test
+        subsuite: try
+    when:
+        files-changed:
+            - 'taskcluster/ci/config.yml'
+            - 'taskcluster/ci/test/**'
+            - 'taskcluster/gecko_taskgraph/transforms/**'
+            - 'tools/tryselect/**'
+
+mozbuild:
+    description: mozbuild unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: mbu
+    run:
+        using: python-test
+        subsuite: mozbuild
+    fetches:
+        toolchain:
+            by-platform:
+                linux1804-64/opt:
+                    - linux64-node
+                macosx1015-64/opt:
+                    - macosx64-node
+                windows11-64/opt:
+                    - win64-node
+                    - win64-mozmake
+    when:
+        files-changed:
+            - '**/moz.configure'
+            - 'build/moz.configure/**'
+            - 'config/tests/**'
+            - 'dom/bindings/mozwebidlcodegen/**'
+            - 'modules/libpref/init/**'
+            - 'modules/libpref/test/**'
+            - 'python/mach/**'
+            - 'python/mozboot/**'
+            - 'python/mozbuild/**'
+            - 'python/mozterm/**'
+            - 'python/mozversioncontrol/**'
+            - 'testing/mozbase/**'
+            - 'testing/xpcshell/xpcshellcommandline.py'
+
+mozperftest:
+    description: mozperftest unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    treeherder:
+        symbol: mpu
+    run:
+        mach: perftest-test
+    fetches:
+        toolchain:
+            by-platform:
+                linux1804-64/opt:
+                    - linux64-node
+                macosx1015-64/opt:
+                    - macosx64-node
+                windows11-64/opt:
+                    - win64-node
+    when:
+        files-changed:
+            - 'testing/performance/**'
+            - 'python/mozperftest/**'
+
+fxms-schemas:
+    description: >
+        Ensure messaging-system schemas are up-to-date and run Experimenter
+        integration tests.
+    platform:
+        - linux1804-64/opt
+    treeherder:
+        symbol: py3(fxms)
+    require-build:
+        by-project:
+            try:
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64/opt: build-linux64/opt
+    fetches:
+        build:
+            - artifact: target.tar.bz2
+            - artifact: target.common.tests.tar.gz
+    worker:
+        by-platform:
+            linux1804-64.*:
+                docker-image: {in-tree: "ubuntu1804-test"}
+                max-run-time: 3600
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            cd browser/components/asrouter/content-src/schemas &&
+            env LD_LIBRARY_PATH=${MOZ_FETCHES_DIR}/firefox \
+                ${MOZ_FETCHES_DIR}/bin/xpcshell \
+                    -g ${MOZ_FETCHES_DIR}/firefox \
+                    -a ${MOZ_FETCHES_DIR}/firefox/browser \
+                    extract-test-corpus.js
+            ../../../../../mach python -- make-schemas.py --check
+    when:
+        files-changed:
+            - 'browser/components/asrouter/content-src/schemas/extract-test-corpus.js'
+            - 'browser/components/asrouter/content-src/schemas/make-schemas.py'
+            - 'browser/components/asrouter/content-src/**/*.schema.json'
+            - 'browser/components/asrouter/modules/CFRMessageProvider.sys.mjs'
+            - 'browser/components/asrouter/modules/OnboardingMessageProvider.sys.mjs'
+            - 'browser/components/asrouter/modules/PanelTestProvider.sys.mjs'
+
+condprof:
+    description: testing/condprofile unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: condprof
+    run:
+        using: python-test
+        subsuite: condprof
+    when:
+        files-changed:
+            - 'testing/condprofile/condprof**'
+            - 'testing/condprofile/setup.py'
+
+featuregates:
+    description: featuregates Python unit tests
+    platform:
+        - linux1804-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: fg
+    run:
+        using: python-test
+        subsuite: featuregates
+    fetches:
+        toolchain:
+            by-platform:
+                linux1804-64/opt:
+                    - linux64-node
+                windows11-64/opt:
+                    - win64-node
+    when:
+        files-changed:
+            - 'toolkit/components/featuregates/**'
+
+skip-fails:
+    description: testing/skip-fails unit tests
+    always-target: false
+    python-version: [3]
+    treeherder:
+        symbol: sf
+    run:
+        using: python-test
+        subsuite: skip-fails
+    when:
+        files-changed:
+            - 'testing/skipfails.py'
+            - 'testing/test/**'
+
+talos:
+    description: testing/talos unit tests
+    platform: windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: tal
+    run:
+        using: python-test
+        subsuite: talos
+    when:
+        files-changed:
+            - 'testing/talos/**'
+
+telemetry-integration-tests:
+    description: pytest-based integration tests for Telemetry
+    always-target: false
+    platform:
+        - linux1804-64/opt
+    worker:
+        by-platform:
+            linux1804-64.*:
+                docker-image: {in-tree: "ubuntu1804-test"}
+                max-run-time: 3600
+    require-build:
+        by-project:
+            try:
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64/opt: build-linux64-shippable/opt
+    treeherder:
+        symbol: tt(i)
+        tier: 3
+    run-on-projects: []
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            source /builds/worker/scripts/xvfb.sh &&
+            start_xvfb '1600x1200x24' 0 &&
+            export GECKO_BINARY_PATH=$MOZ_FETCHES_DIR/firefox/firefox &&
+            ./mach python-test --subsuite telemetry-integration-tests
+    fetches:
+        build:
+            - target.tar.bz2
+            - artifact: target.common.tests.tar.gz
+              dest: tests
+            - artifact: target.reftest.tests.tar.gz
+              dest: tests
+    when:
+        files-changed:
+            - 'toolkit/components/telemetry/**'
+
+telemetry-python:
+    description: Python unit tests for Telemetry
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: tp
+    run:
+        using: python-test
+        subsuite: telemetry-python
+    fetches:
+        toolchain:
+            by-platform:
+                linux1804-64/opt:
+                    - linux64-node
+                macosx1015-64/opt:
+                    - macosx64-node
+                windows11-64/opt:
+                    - win64-node
+    when:
+        files-changed:
+            - 'toolkit/components/telemetry/**'
+
+webext:
+    description: WebExtensions python utilities unit tests
+    platform:
+        - linux1804-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: webext-py
+        tier: 2
+    run:
+        using: python-test
+        subsuite: webext-python
+    when:
+        files-changed:
+            - 'toolkit/components/extensions/webidl-api/**'
+            - 'toolkit/components/extensions/schemas/*.json'
+            - 'browser/components/extensions/schemas/*.json'
+            - 'mobile/android/components/extensions/schemas/*.json'
+
+xpcom:
+    description: xpcom unit tests
+    platform:
+        - linux1804-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: xpcom
+    run:
+        using: python-test
+        subsuite: xpcom
+    when:
+        files-changed:
+            - 'third_party/python/ply/**'
+            - 'xpcom/components/*.py'
+            - 'xpcom/components/test/**'
+            - 'xpcom/ds/tools/**'
+            - 'xpcom/ds/test/**'
+            - 'xpcom/idl-parser/**'
diff --git a/taskcluster/ci/source-test/shadow-scheduler.yml b/taskcluster/ci/source-test/shadow-scheduler.yml
new file mode 100644
index 0000000000..97d1b1f30b
--- /dev/null
+++ b/taskcluster/ci/source-test/shadow-scheduler.yml
@@ -0,0 +1,178 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: gecko-decision/opt
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 3600
+        artifacts:
+            - type: file
+              name: public/shadow-scheduler/optimized-tasks.json
+              path: /builds/worker/optimized-tasks.json
+        env:
+            DECISION_TASK_ID: {task-reference: <decision>}
+    treeherder:
+        kind: other
+        tier: 3
+    run-on-projects: ['autoland-only']
+    run:
+        using: mach
+        mach: taskgraph optimized -v --json -p task-id=$DECISION_TASK_ID --output-file /builds/worker/optimized-tasks.json
+        sparse-profile: taskgraph
+
+relevant_tests:
+    description: Runs the relevant_tests optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(relevant_tests)
+    index:
+        product: source
+        job-name: shadow-scheduler-relevant_tests
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.relevant_tests
+
+bugbug_tasks_medium:
+    description: Runs the bugbug_tasks_medium optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_tasks_medium)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_tasks_medium
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_tasks_medium
+
+bugbug_tasks_high:
+    description: Runs the bugbug_tasks_high optimization strategy (with a high confidence threshold) instead of the default.
+    treeherder:
+        symbol: SS(bugbug_tasks_high)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_tasks_high
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_tasks_high
+
+bugbug_debug_disperse:
+    description: Runs the bugbug_debug_disperse optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_debug_disperse)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_debug_disperse
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_debug_disperse
+
+bugbug_disperse_low:
+    description: Runs the bugbug_disperse_low optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_disperse_low)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_disperse_low
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_disperse_low
+
+bugbug_disperse_medium:
+    description: Runs the bugbug_disperse_medium optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_disperse_med)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_disperse_medium
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_disperse_medium
+
+bugbug_disperse_reduced_medium:
+    description: Runs the bugbug_disperse_reduced_medium optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_di_r_med_noun)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_disperse_reduced_medium
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_disperse_reduced_medium
+
+bugbug_reduced_manifests_config_selection_low:
+    description: Runs the bugbug_reduced_manifests_config_selection_low optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_r_c_s_low)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_reduced_manifests_config_selection_low
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_reduced_manifests_config_selection_low
+
+bugbug_reduced_manifests_config_selection_medium:
+    description: Runs the bugbug_reduced_manifests_config_selection_medium optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_r_c_s_med)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_reduced_manifests_config_selection_medium
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_reduced_manifests_config_selection_medium
+
+bugbug_disperse_medium_no_unseen:
+    description: Runs the bugbug_disperse_medium_no_unseen optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_disp_med_noun)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_disperse_medium_no_unseen
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_disperse_medium_no_unseen
+
+bugbug_disperse_medium_only_one:
+    description: Runs the bugbug_disperse_medium_only_one optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_disp_med_one)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_disperse_medium_only_one
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_disperse_medium_only_one
+
+bugbug_disperse_high:
+    description: Runs the bugbug_disperse_high optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_disperse_high)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_disperse_high
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_disperse_high
+
+bugbug_reduced:
+    description: Runs the bugbug_reduced optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_reduced)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_reduced
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_reduced
+
+bugbug_reduced_high:
+    description: Runs the bugbug_reduced optimization strategy (with a low confidence threshold) instead of the default.
+    treeherder:
+        symbol: SS(bugbug_reduced_high)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_reduced_high
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_reduced_high
diff --git a/taskcluster/ci/source-test/taskgraph.yml b/taskcluster/ci/source-test/taskgraph.yml
new file mode 100644
index 0000000000..132d5e488c
--- /dev/null
+++ b/taskcluster/ci/source-test/taskgraph.yml
@@ -0,0 +1,37 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+diff:
+    description: Generates diffs of CI changes
+    platform: linux1804-64/opt
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+        # Uncomment to upload logs of the generations as artifacts.
+        # env:
+        #     XDG_CACHE_HOME: "/builds/worker/artifacts/cache"
+        artifacts:
+            - type: directory
+              name: public/taskgraph
+              path: /builds/worker/artifacts
+    attributes:
+        code-review: true
+    always-target: true
+    treeherder:
+        kind: test
+        platform: gecko-decision/opt
+        symbol: tgdiff
+        tier: 2
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >-
+            mkdir -p /builds/worker/artifacts/diffs &&
+            ./mach taskgraph target --fast -p "taskcluster/test/params" -o "/builds/worker/artifacts/diffs/diff.txt" --diff {base_rev} &&
+            python taskcluster/scripts/misc/summarize-tgdiff.py /builds/worker/artifacts/diffs/ 20
+    when:
+        files-changed:
+            - 'taskcluster/ci/**'
+            - 'taskcluster/**/*.py'
diff --git a/taskcluster/ci/source-test/vendor.yml b/taskcluster/ci/source-test/vendor.yml
new file mode 100644
index 0000000000..c6594c6f68
--- /dev/null
+++ b/taskcluster/ci/source-test/vendor.yml
@@ -0,0 +1,44 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: t-linux-xlarge-source
+    attributes:
+        code-review: true
+    worker:
+        docker-image: {in-tree: static-analysis-build}
+        max-run-time: 1200
+        artifacts:
+            - type: file
+              name: public/code-review/issues.json
+              path: /builds/worker/issues.json
+    treeherder:
+        kind: test
+        tier: 1
+    platform: lint/opt
+    run:
+        using: run-task
+
+rust:
+    description: Rust vendoring validation
+    treeherder:
+        symbol: rust(vendor)
+    worker:
+        env:
+            MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE: system
+    run:
+        cwd: '{checkout}'
+        command: >-
+            ./mach vendor rust --issues-json /builds/worker/issues.json
+    fetches:
+        toolchain:
+            - linux64-cargo-vet
+            - linux64-rust
+    when:
+        files-changed:
+            - 'Cargo.lock'
+            - '**/Cargo.toml'
+            - 'python/mozbuild/mozbuild/vendor/vendor_rust.py'
+            - 'supply-chain/**'
+            - 'third_party/rust/**'
diff --git a/taskcluster/ci/source-test/webcompat.yml b/taskcluster/ci/source-test/webcompat.yml
new file mode 100644
index 0000000000..66ff7910a6
--- /dev/null
+++ b/taskcluster/ci/source-test/webcompat.yml
@@ -0,0 +1,37 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: linux1804-64/opt
+    require-build:
+        by-project:
+            try:
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64/opt: build-linux64-shippable/opt
+    fetches:
+        build:
+            - target.tar.bz2
+        toolchain:
+            - linux64-geckodriver
+    run-on-projects: []
+    treeherder:
+        kind: test
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: ubuntu1804-test}
+        max-run-time: 1800
+    optimization:
+        skip-unless-expanded: null
+
+interventions:
+    description: webcompat intervention tests
+    treeherder:
+        symbol: wc(I)
+        tier: 3
+    python-version: [3]
+    run:
+        using: mach
+        # Need to start Xvfb if we remove --headless
+        mach: test-interventions --headless --binary $MOZ_FETCHES_DIR/firefox/firefox --webdriver-binary $MOZ_FETCHES_DIR/geckodriver --log-tbpl -
diff --git a/taskcluster/ci/source-test/webidl.yml b/taskcluster/ci/source-test/webidl.yml
new file mode 100644
index 0000000000..eec7a75e38
--- /dev/null
+++ b/taskcluster/ci/source-test/webidl.yml
@@ -0,0 +1,24 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+test:
+    description: WebIDL parser tests
+    platform: lint/opt
+    treeherder:
+        symbol: Wp
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+    run:
+        using: mach
+        mach: webidl-parser-test --verbose
+    when:
+        files-changed:
+            - 'dom/bindings/parser/runtests.py'
+            - 'dom/bindings/parser/WebIDL.py'
+            - 'dom/bindings/parser/tests/**'
+            - 'other-licenses/ply/**'
diff --git a/taskcluster/ci/source-test/wpt-manifest.yml b/taskcluster/ci/source-test/wpt-manifest.yml
new file mode 100644
index 0000000000..06b29b60f5
--- /dev/null
+++ b/taskcluster/ci/source-test/wpt-manifest.yml
@@ -0,0 +1,39 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: linux64/opt
+    treeherder:
+        kind: test
+        tier: 2
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+
+upload:
+    description: Generate and store the web-platform-tests manifest
+    treeherder:
+        symbol: Wm
+    index:
+        product: source
+        job-name: manifest-upload
+        rank: build_date
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            ./mach wpt-manifest-update --config testing/web-platform/wptrunner.ini --no-download
+            && tar -cvzf manifests.tar.gz -C testing/web-platform/ meta/MANIFEST.json mozilla/meta/MANIFEST.json
+    worker:
+        artifacts:
+            - type: file
+              path: /builds/worker/checkouts/gecko/manifests.tar.gz
+              name: public/manifests.tar.gz
+
+        max-run-time: 3600
+    when:
+        files-changed:
+            - 'testing/web-platform/tests/**'
+            - 'testing/web-platform/mozilla/tests/**'
diff --git a/taskcluster/ci/source-test/wpt-metadata.yml b/taskcluster/ci/source-test/wpt-metadata.yml
new file mode 100644
index 0000000000..b2c54d62b9
--- /dev/null
+++ b/taskcluster/ci/source-test/wpt-metadata.yml
@@ -0,0 +1,58 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: lint/opt
+    treeherder:
+        kind: test
+        tier: 2
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+
+summary:
+    description: Summarize wpt metadata
+    treeherder:
+        symbol: wpt-meta
+    index:
+        product: source
+        job-name: source-wpt-metadata-summary
+    run:
+        using: mach
+        mach: wpt-metadata-summary --out-dir=/builds/worker/artifacts
+    worker:
+        artifacts:
+            - type: directory
+              path: /builds/worker/artifacts
+              name: public
+        max-run-time: 2700
+    when:
+        files-changed:
+            - 'testing/web-platform/meta/**'
+            - 'testing/web-platform/mozilla/meta/**'
+            - 'testing/web-platform/metasummary.py'
+
+
+fission-regression:
+    description: Summarize fission regressions in wpt
+    treeherder:
+        symbol: wpt-fis
+    index:
+        product: source
+        job-name: source-wpt-fission-regressions
+    run:
+        using: mach
+        mach: wpt-fission-regressions --all-json /builds/worker/artifacts/regressions.json --untriaged /builds/worker/artifacts/untriaged.txt
+    worker:
+        artifacts:
+            - type: directory
+              path: /builds/worker/artifacts
+              name: public
+        max-run-time: 2700
+    when:
+        files-changed:
+            - 'testing/web-platform/meta/**'
+            - 'testing/web-platform/mozilla/meta/**'
+            - 'testing/web-platform/fissionregressions.py'
diff --git a/taskcluster/ci/spidermonkey/kind.yml b/taskcluster/ci/spidermonkey/kind.yml
new file mode 100644
index 0000000000..358ffeeb3f
--- /dev/null
+++ b/taskcluster/ci/spidermonkey/kind.yml
@@ -0,0 +1,74 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.spidermonkey:transforms
+    - gecko_taskgraph.transforms.build_attrs:transforms
+    - gecko_taskgraph.transforms.build_lints:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    attributes:
+        retrigger: true
+    treeherder:
+        kind: build
+        tier: 1
+    index:
+        product: firefox
+    worker-type: b-linux-gcp
+    run:
+        using: spidermonkey
+    when:
+        files-changed:
+            # any when.files-changed specified below in a job will be
+            # appended to this list
+            - build/**
+            - config/**
+            - configure.py
+            - dom/bindings/**
+            - intl/icu/**
+            - js/moz.configure
+            - js/public/**
+            - js/src/**
+            - layout/tools/reftest/reftest/**
+            - Makefile.in
+            - media/webrtc/trunk/tools/gyp/**
+            - memory/**
+            - mfbt/**
+            - modules/fdlibm/**
+            - modules/zlib/src/**
+            - mozglue/**
+            - moz.build
+            - moz.configure
+            - nsprpub/**
+            - python/**
+            - taskcluster/moz.build
+            - taskcluster/ci/spidermonkey/kind.yml
+            - testing/mozbase/**
+            - testing/web-platform/**
+            - test.mozbuild
+            - toolkit/mozapps/installer/package-name.mk
+            - toolkit/mozapps/installer/upload-files.mk
+    fetches:
+        toolchain:
+            by-worker-type:
+                .*-b-win2022:
+                    - win64-clang
+                    - win64-rust
+                default:
+                    - linux64-clang
+                    - linux64-gcc
+                    - linux64-rust
+                    - linux64-dump_syms
+                    - sysroot-x86_64-linux-gnu
+
+jobs-from:
+    - linux.yml
+    - windows.yml
diff --git a/taskcluster/ci/spidermonkey/linux.yml b/taskcluster/ci/spidermonkey/linux.yml
new file mode 100644
index 0000000000..cf7604bf5a
--- /dev/null
+++ b/taskcluster/ci/spidermonkey/linux.yml
@@ -0,0 +1,606 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker:
+        max-run-time: 10800
+        docker-image: {in-tree: debian12-amd64-build}
+        env:
+            MOZ_JS_UPLOAD_BINARIES_DEFAULT: "0"
+    run:
+        tooltool-downloads: public
+
+sm-package-linux64/opt:
+    description: "Spidermonkey source package and test"
+    index:
+        job-name: sm-package-linux64-opt
+    treeherder:
+        symbol: SM(pkg)
+        platform: linux64/opt
+    run:
+        using: spidermonkey-package
+        spidermonkey-variant: plain
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-rust
+            - linux64-gcc
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-plain-linux64/debug:
+    description: "Spidermonkey Plain"
+    index:
+        job-name: sm-plain-linux64-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: SM(p)
+    run:
+        spidermonkey-variant: plaindebug
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-rust
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-plain-linux64/opt:
+    description: "Spidermonkey Plain"
+    index:
+        job-name: sm-plain-linux64-opt
+    treeherder:
+        symbol: SM(p)
+        platform: linux64/opt
+    run:
+        spidermonkey-variant: plain
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-rust
+            - linux64-gcc
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-smoosh-linux64/debug:
+    description: "Spidermonkey SmooshMonkey"
+    index:
+        job-name: sm-smoosh-linux64-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: SM(smoosh)
+        tier: 3
+    run:
+        spidermonkey-variant: smooshdebug
+    run-on-projects: []
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+    when:
+        files-changed:
+            - 'third_party/rust/jsparagus/**'
+            - 'js/src/frontend/Frontend2.cpp'
+            - 'js/src/frontend/Frontend2.h'
+            - 'js/src/frontend/SourceNotes.h'
+            - 'js/src/frontend/smoosh/**'
+            - 'js/public/Symbol.h'
+            - 'js/src/vm/AsyncFunctionResolveKind.h'
+            - 'js/src/vm/BytecodeFormatFlags.h'
+            - 'js/src/vm/CheckIsObjectKind.h'
+            - 'js/src/vm/FunctionFlags.h'
+            - 'js/src/vm/FunctionPrefixKind.h'
+            - 'js/src/vm/GeneratorAndAsyncKind.h'
+            - 'js/src/vm/GeneratorResumeKind.h'
+            - 'js/src/vm/Opcodes.h'
+            - 'js/src/vm/ThrowMsgKind.h'
+            - 'js/src/vm/StencilEnums.h'
+
+sm-smoosh-linux64/opt:
+    description: "Spidermonkey SmooshMonkey"
+    index:
+        job-name: sm-smoosh-linux64-opt
+    treeherder:
+        symbol: SM(smoosh)
+        platform: linux64/opt
+        tier: 3
+    run:
+        spidermonkey-variant: smoosh
+    run-on-projects: []
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+    when:
+        files-changed:
+            - 'third_party/rust/jsparagus/**'
+            - 'js/src/frontend/Frontend2.cpp'
+            - 'js/src/frontend/Frontend2.h'
+            - 'js/src/frontend/SourceNotes.h'
+            - 'js/src/frontend/smoosh/**'
+            - 'js/public/Symbol.h'
+            - 'js/src/vm/AsyncFunctionResolveKind.h'
+            - 'js/src/vm/BytecodeFormatFlags.h'
+            - 'js/src/vm/CheckIsObjectKind.h'
+            - 'js/src/vm/FunctionFlags.h'
+            - 'js/src/vm/FunctionPrefixKind.h'
+            - 'js/src/vm/GeneratorAndAsyncKind.h'
+            - 'js/src/vm/GeneratorResumeKind.h'
+            - 'js/src/vm/Opcodes.h'
+            - 'js/src/vm/ThrowMsgKind.h'
+            - 'js/src/vm/StencilEnums.h'
+
+sm-nojit-linux64/opt:
+    description: "Spidermonkey no JIT"
+    index:
+        job-name: sm-nojit-linux64-opt
+    treeherder:
+        symbol: SM(nojit)
+        platform: linux64/opt
+    run:
+        spidermonkey-variant: nojit
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-pbl-linux64/opt:
+    description: "Spidermonkey PBL"
+    index:
+        job-name: sm-pbl-linux64-opt
+    treeherder:
+        symbol: SM(pbl)
+        platform: linux64/opt
+        tier: 2
+    run:
+        spidermonkey-variant: pbl
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-plain-linux32/debug:
+    description: "Spidermonkey Plain"
+    index:
+        job-name: sm-plain-linux32-debug
+    treeherder:
+        platform: linux32/debug
+        symbol: SM(p)
+    run:
+        spidermonkey-variant: plaindebug
+        spidermonkey-platform: linux
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-i686-linux-gnu
+            - sysroot-x86_64-linux-gnu
+
+sm-arm-sim-linux32/debug:
+    description: "Spidermonkey ARM sim"
+    index:
+        job-name: sm-arm-sim-linux32-debug
+    treeherder:
+        platform: linux32/debug
+        symbol: SM(arm)
+    run:
+        spidermonkey-variant: arm-sim
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-i686-linux-gnu
+            - sysroot-x86_64-linux-gnu
+
+sm-arm64-sim-linux64/debug:
+    description: "Spidermonkey ARM64 sim"
+    index:
+        job-name: sm-arm64-sim-linux64-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: SM(arm64)
+    run:
+        spidermonkey-variant: arm64-sim
+    worker:
+        env:
+            MOZ_JS_UPLOAD_BINARIES_DEFAULT: "1"
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-asan-linux64/opt:
+    description: "Spidermonkey Address Sanitizer"
+    index:
+        job-name: sm-linux64-asan-opt
+    treeherder:
+        symbol: SM(asan)
+        platform: linux64/opt
+    worker:
+        env:
+            MOZ_JS_UPLOAD_BINARIES_DEFAULT: "1"
+    run:
+        spidermonkey-variant: asan
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-compacting-linux64/debug:
+    description: "Spidermonkey Compacting"
+    index:
+        job-name: sm-compacting-linux64-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: SM(cgc)
+    run:
+        spidermonkey-variant: compacting
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-linux64-wasi/opt:
+    description: "Spidermonkey WASI opt build"
+    index:
+        job-name: sm-linux64-wasi-opt
+    treeherder:
+        platform: linux64/opt
+        symbol: SM(wasi)
+        tier: 2
+    run:
+        spidermonkey-variant: wasi
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+# Like sm-linux64-wasi/opt but with Intl/ICU enabled.
+sm-linux64-wasi-intl/opt:
+    description: "Spidermonkey WASI Intl opt build"
+    index:
+        job-name: sm-linux64-wasi-intl-opt
+    treeherder:
+        platform: linux64/opt
+        symbol: SM(wasi-intl)
+        tier: 2
+    run:
+        spidermonkey-variant: wasi-intl
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+sm-wasm-no-experimental-linux64/debug:
+    description: "Spidermonkey WebAssembly No experimental features"
+    index:
+        job-name: sm-wasm-no-experimental-linux64-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: SM(wasm-no-experimental)
+        tier: 2
+    run:
+        spidermonkey-variant: wasm-noexperimental
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-rust
+            - linux64-gcc
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-linux64-wasi-pbl/opt:
+    description: "Spidermonkey WASI opt build with PBL"
+    index:
+        job-name: sm-pbl-linux64-wasi-opt
+    treeherder:
+        platform: linux64/opt
+        symbol: SM(wasi-pbl)
+        tier: 2
+    run:
+        spidermonkey-variant: wasi-pbl
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+
+sm-msan-linux64/opt:
+    description: "Spidermonkey Memory Sanitizer"
+    index:
+        job-name: sm-linux64-msan-opt
+    treeherder:
+        symbol: SM(msan)
+        platform: linux64/opt
+        tier: 3
+    worker:
+        env:
+            MOZ_JS_UPLOAD_BINARIES_DEFAULT: "1"
+    run:
+        spidermonkey-variant: msan
+    # Disable by default by allow try pushes to explicitly request.
+    run-on-projects: []
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-tsan-linux64/opt:
+    description: "Spidermonkey Thread Sanitizer"
+    index:
+        job-name: sm-linux64-tsan-opt
+    treeherder:
+        symbol: SM(tsan)
+        platform: linux64/opt
+    worker:
+        env:
+            MOZ_JS_UPLOAD_BINARIES_DEFAULT: "1"
+    run:
+        spidermonkey-variant: tsan
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-gcc
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-rust-dev
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-rootanalysis-linux64/debug:
+    description: "Spidermonkey Root Analysis"
+    index:
+        job-name: sm-rootanalysis-linux64-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: SM(r)
+    run:
+        spidermonkey-variant: rootanalysis
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-nonunified-linux64/debug:
+    description: "Spidermonkey Non-Unified Debug"
+    index:
+        job-name: sm-nonunified-linux64-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: SM(nu)
+    run:
+        spidermonkey-variant: nonunified
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-fuzzing-linux64/opt:
+    description: "Spidermonkey Fuzzing"
+    index:
+        job-name: sm-linux64-fuzzing
+    treeherder:
+        platform: linux64/opt
+        symbol: SM(f)
+    worker:
+        env:
+            MOZ_JS_UPLOAD_BINARIES_DEFAULT: "1"
+    run:
+        spidermonkey-variant: fuzzing
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-fuzzilli-linux64/debug:
+    description: "Spidermonkey Fuzzilli debug"
+    index:
+        job-name: sm-linux64-fuzzilli-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: SM(fuzzilli)
+    worker:
+        env:
+            MOZ_JS_UPLOAD_BINARIES_DEFAULT: "1"
+    run:
+        spidermonkey-variant: fuzzilli
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-gdb-linux64/debug:
+    description: "Spidermonkey GDB Pretty-printers"
+    index:
+        job-name: sm-gdb-linux64
+    worker:
+        docker-image: {in-tree: gdb-test}
+    treeherder:
+        platform: linux64/debug
+        tier: 2
+        symbol: SM(gdb)
+    run:
+        spidermonkey-variant: gdb
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-gcc
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-rt-linux64/debug:
+    description: "SpiderMonkey Records&Tuples"
+    index:
+        job-name: sm-rt-linux64-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: SM(rt)
+    run:
+        spidermonkey-variant: rtdebug
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-rust
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
+
+sm-temporal-linux64/debug:
+    description: "SpiderMonkey Temporal"
+    index:
+        job-name: sm-temporal-linux64-debug
+    treeherder:
+        platform: linux64/debug
+        symbol: SM(temporal)
+    run:
+        spidermonkey-variant: temporaldebug
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-cbindgen
+            - linux64-dump_syms
+            - linux64-breakpad-injector
+            - linux64-minidump-stackwalk
+            - linux64-llvm-symbolizer
+            - linux64-rust
+            - linux64-pkgconf
+            - sysroot-x86_64-linux-gnu
diff --git a/taskcluster/ci/spidermonkey/windows.yml b/taskcluster/ci/spidermonkey/windows.yml
new file mode 100644
index 0000000000..2fa90deb8e
--- /dev/null
+++ b/taskcluster/ci/spidermonkey/windows.yml
@@ -0,0 +1,124 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-win2022
+    worker:
+        max-run-time: 10800
+    run:
+        tooltool-downloads: public
+
+sm-plain-win64/debug:
+    description: "Spidermonkey Plain win64 debug"
+    index:
+        job-name: sm-plain-win64-debug
+    treeherder:
+        platform: windows2012-64/debug
+        symbol: SM(p)
+    run:
+        spidermonkey-variant: plaindebug
+        spidermonkey-platform: win64
+    fetches:
+        toolchain:
+            - win64-cbindgen
+            - win64-clang
+            - win64-rust
+            - win64-mozmake
+            - vs
+
+sm-plain-win32/debug:
+    description: "Spidermonkey Plain win32 debug"
+    index:
+        job-name: sm-plain-win32-debug
+    treeherder:
+        platform: windows2012-32/debug
+        symbol: SM(p)
+        tier: 2
+    run:
+        spidermonkey-variant: plaindebug
+        spidermonkey-platform: win32
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - win64-cbindgen
+            - win64-clang
+            - win64-rust
+            - win64-mozmake
+            - vs
+
+sm-plain-win64/opt:
+    description: "Spidermonkey Plain win64 opt"
+    index:
+        job-name: sm-plain-win64-opt
+    treeherder:
+        platform: windows2012-64/opt
+        symbol: SM(p)
+    run:
+        spidermonkey-variant: plain
+        spidermonkey-platform: win64
+    fetches:
+        toolchain:
+            - win64-cbindgen
+            - win64-clang
+            - win64-rust
+            - win64-mozmake
+            - vs
+
+sm-plain-win32/opt:
+    description: "Spidermonkey Plain win32 opt"
+    index:
+        job-name: sm-plain-win32-opt
+    treeherder:
+        platform: windows2012-32/opt
+        symbol: SM(p)
+        tier: 2
+    run:
+        spidermonkey-variant: plain
+        spidermonkey-platform: win32
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - win64-cbindgen
+            - win64-clang
+            - win64-rust
+            - win64-mozmake
+            - vs
+
+sm-compacting-win64/debug:
+    description: "Spidermonkey Compacting win64 debug"
+    index:
+        job-name: sm-compacting-win64-debug
+    treeherder:
+        platform: windows2012-64/debug
+        symbol: SM(cgc)
+    run:
+        spidermonkey-variant: compacting
+        spidermonkey-platform: win64
+    fetches:
+        toolchain:
+            - win64-cbindgen
+            - win64-clang
+            - win64-rust
+            - win64-mozmake
+            - vs
+
+sm-compacting-win32/debug:
+    description: "Spidermonkey Compacting win32 debug"
+    index:
+        job-name: sm-compacting-win32-debug
+    treeherder:
+        platform: windows2012-32/debug
+        symbol: SM(cgc)
+        tier: 2
+    run:
+        spidermonkey-variant: compacting
+        spidermonkey-platform: win32
+    run-on-projects: []
+    fetches:
+        toolchain:
+            - win64-cbindgen
+            - win64-clang
+            - win64-rust
+            - win64-mozmake
+            - vs
diff --git a/taskcluster/ci/startup-test/kind.yml b/taskcluster/ci/startup-test/kind.yml
new file mode 100644
index 0000000000..bc62e7e764
--- /dev/null
+++ b/taskcluster/ci/startup-test/kind.yml
@@ -0,0 +1,129 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    # We want to test the signed version of a build, to make sure
+    # any startup problems or crashes caused by signing are caught
+    # This means we depend on a different kind depending on the platform
+    # non-system python
+    - toolchain
+    # linux
+    - build-signing
+    # mac
+    - repackage
+    # windows
+    - repackage-signing
+
+transforms:
+    - gecko_taskgraph.transforms.startup_test:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    name: startup-test
+    description: Check whether or not a product crashes on startup
+    run-on-projects: ['mozilla-central']
+    worker:
+        max-run-time: 3600
+    run:
+        sparse-profile: startup-test
+    attributes:
+        build_type: opt
+    treeherder:
+        symbol: SUT
+        kind: test
+        tier: 1
+    use-system-python: false
+
+jobs:
+    linux32:
+        dependencies:
+            build-signing: build-signing-linux-shippable/opt
+        run:
+            using: run-task
+            cwd: "{checkout}"
+        extra-config:
+            upstream_kind: build-signing
+            upstream_artifact: target.tar.bz2
+            binary: firefox
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: ubuntu1804-test}
+        shipping-product: firefox
+        attributes:
+            build_platform: linux-shippable
+        treeherder:
+            platform: linux-shippable/opt
+
+    linux64:
+        dependencies:
+            build-signing: build-signing-linux64-shippable/opt
+        run:
+            using: run-task
+            cwd: "{checkout}"
+        extra-config:
+            upstream_kind: build-signing
+            upstream_artifact: target.tar.bz2
+            binary: firefox
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: ubuntu1804-test}
+        shipping-product: firefox
+        attributes:
+            build_platform: linux64-shippable
+        treeherder:
+            platform: linux64-shippable/opt
+
+    macosx64:
+        dependencies:
+            repackage: repackage-macosx64-shippable/opt
+        run:
+            using: mach
+            python-version: 3
+        extra-config:
+            upstream_kind: repackage
+            upstream_artifact: target.dmg
+            binary: Contents/MacOS/firefox
+        worker-type: t-osx-1015-r8
+        shipping-product: firefox
+        attributes:
+            build_platform: macosx64-shippable
+        treeherder:
+            platform: macosx64-shippable/opt
+
+    win32:
+        dependencies:
+            repackage-signing: repackage-signing-win32-shippable/opt
+        run:
+            using: mach
+            python-version: 3
+        extra-config:
+            upstream_kind: repackage-signing
+            upstream_artifact: target.installer.exe
+            binary: core/firefox.exe
+        worker-type: win11-64-2009-source
+        shipping-product: firefox
+        attributes:
+            build_platform: win32-shippable
+        treeherder:
+            platform: windows2012-32-shippable/opt
+
+    win64:
+        dependencies:
+            repackage-signing: repackage-signing-win64-shippable/opt
+        run:
+            using: mach
+            python-version: 3
+        extra-config:
+            upstream_kind: repackage-signing
+            upstream_artifact: target.installer.exe
+            binary: core/firefox.exe
+        worker-type: win11-64-2009-source
+        shipping-product: firefox
+        attributes:
+            build_platform: win64-shippable
+        treeherder:
+            platform: windows2012-64-shippable/opt
diff --git a/taskcluster/ci/static-analysis-autotest/kind.yml b/taskcluster/ci/static-analysis-autotest/kind.yml
new file mode 100644
index 0000000000..6a01325598
--- /dev/null
+++ b/taskcluster/ci/static-analysis-autotest/kind.yml
@@ -0,0 +1,101 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.build_attrs:transforms
+    - gecko_taskgraph.transforms.build_lints:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    attributes:
+        retrigger: true
+    index:
+        product: firefox
+    worker:
+        skip-artifacts: true
+        max-run-time: 3600
+        env:
+            PERFHERDER_EXTRA_OPTIONS: static-analysis-autotest
+    use-system-python: false
+    run-on-projects: ['mozilla-central']
+    run:
+        using: mozharness
+        actions: [static-analysis-autotest]
+        script: mozharness/scripts/fx_desktop_build.py
+    treeherder:
+        symbol: Sa
+        kind: build
+        tier: 1
+
+jobs:
+    linux64-st-autotest/debug:
+        description: "Linux64 Debug Static Analysis Autotest"
+        index:
+            job-name: linux64-st-autotest-debug
+        treeherder:
+            platform: linux64/debug
+        worker-type: t-linux-large
+        worker:
+            docker-image: {in-tree: static-analysis-build}
+            env:
+                # clang-tidy needs a recent libstdc++, which can be found in the clang
+                # toolchain.
+                LD_LIBRARY_PATH: /builds/worker/checkouts/gecko/clang/lib
+                PERFHERDER_EXTRA_OPTIONS: static-analysis-autotest
+        run:
+            config:
+                - builds/releng_base_firefox.py
+                - builds/releng_sub_linux_configs/64_stat_and_debug.py
+            tooltool-downloads: public
+            keep-artifacts: false
+        use-sccache: true
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-clang-tidy
+                - linux64-rust
+                - linux64-sccache
+                - linux64-cbindgen
+                - linux64-nasm
+                - linux64-node
+                - linux64-pkgconf
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+
+    win64-st-autotest/debug:
+        description: "Win64 Debug Static Analysis Autotest"
+        index:
+            job-name: win64-st-autotest-debug
+        treeherder:
+            platform: windows2012-64/debug
+            tier: 2
+        worker-type: b-win2022
+        run:
+            config:
+                - builds/releng_base_firefox.py
+                - builds/taskcluster_base_windows.py
+                - builds/taskcluster_base_win64.py
+                - builds/taskcluster_sub_win64/debug.py
+            extra-config:
+                mozconfig_variant: debug
+        use-sccache: false
+        fetches:
+            toolchain:
+                - win64-clang
+                - win64-rust
+                - win64-cbindgen
+                - win64-clang-tidy
+                - win64-nasm
+                - win64-node
+                - win64-dump_syms
+                - win64-winchecksec
+                - vs
+                - windows-rs
+                - sysroot-wasm32-wasi
diff --git a/taskcluster/ci/system-symbols-reprocess/kind.yml b/taskcluster/ci/system-symbols-reprocess/kind.yml
new file mode 100644
index 0000000000..5b81817188
--- /dev/null
+++ b/taskcluster/ci/system-symbols-reprocess/kind.yml
@@ -0,0 +1,46 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+# we need that to apply grouping only on jobs that have "build_platform", so we
+# dont fail for the "fetch" kind that does is a dependency but does not have it
+only-for-attributes:
+    - build_platform
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.reprocess_symbols
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - system-symbols
+    - system-symbols-upload
+    - fetch
+
+jobs:
+    system-symbols-reprocess:
+        from-deps:
+            kinds: ["system-symbols", "system-symbols-upload"]
+            group-by: platform
+        description: Reprocess Symbols on Crash-Stats
+        attributes:
+            cron: true
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: system-symbols-linux-scraper}
+            max-run-time: 7200
+            env:
+                # {level} gets replaced in the reprocess_symbols transform
+                CRASHSTATS_SECRET: "project/releng/gecko/build/level-{level}/gecko-symbol-reprocess"
+                DUMP_SYMS: "/bin/false"
+        run:
+            using: run-task
+            command: {artifact-reference: "${MOZ_FETCHES_DIR}/symbol-scrapers/reprocess.sh <system-symbols/public/build/target.crashreporter-symbols.zip>"}
+        fetches:
+            fetch:
+                - symbol-scrapers
+        scopes:
+            - secrets:get:project/releng/gecko/build/level-{level}/gecko-symbol-reprocess
diff --git a/taskcluster/ci/system-symbols-upload/kind.yml b/taskcluster/ci/system-symbols-upload/kind.yml
new file mode 100644
index 0000000000..dd9462a84b
--- /dev/null
+++ b/taskcluster/ci/system-symbols-upload/kind.yml
@@ -0,0 +1,34 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.upload_symbols
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - system-symbols
+
+jobs:
+    system-symbols-upload:
+        description: Upload Symbols
+        from-deps: {}
+        attributes:
+            cron: true
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: "lint"}
+            max-run-time: 1200
+            env:
+                # {level} gets replaced in the upload_symbols transform
+                SYMBOL_SECRET: "project/releng/gecko/build/level-{level}/gecko-symbol-upload"
+        run:
+            using: mach
+            mach: {artifact-reference: "python toolkit/crashreporter/tools/upload_symbols.py <system-symbols/public/build/target.crashreporter-symbols.zip> --ignore-missing"}
+            sparse-profile: upload-symbols
+        scopes:
+            - secrets:get:project/releng/gecko/build/level-{level}/gecko-symbol-upload
diff --git a/taskcluster/ci/system-symbols/kind.yml b/taskcluster/ci/system-symbols/kind.yml
new file mode 100644
index 0000000000..0090454a68
--- /dev/null
+++ b/taskcluster/ci/system-symbols/kind.yml
@@ -0,0 +1,320 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+    - fetch
+
+transforms:
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    attributes:
+        cron: true
+        # This enables uploading symbols.
+        enable-full-crashsymbols: true
+    fetches:
+        toolchain:
+            - linux64-dump_syms
+    treeherder:
+        platform: symbols/opt
+        kind: other
+        tier: 2
+    worker-type: b-linux-gcp
+    worker:
+        env:
+            MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE: system
+
+jobs:
+    mac:
+        description: Extract macOS system symbols found in crashreports
+        attributes:
+            build_platform: macos
+        index:
+            product: system-symbols
+            job-name: mac
+            type: generic
+        worker:
+            env:
+                PROCESSED_PACKAGES_INDEX: gecko.v2.mozilla-central.latest.system-symbols.mac
+                PROCESSED_PACKAGES_PATH: public/build/processed-packages.gz
+            artifacts:
+                - name: public/build
+                  type: directory
+                  path: /builds/worker/artifacts/
+            docker-image: {in-tree: system-symbols-mac}
+            max-run-time: 28800
+        run:
+            using: run-task
+            command: >-
+                ./run.sh
+        treeherder:
+            symbol: system-symbols-mac
+        fetches:
+            toolchain:
+                - linux64-libdmg
+    win:
+        description: Extract windows system symbols found in crashreports
+        attributes:
+            build_platform: windows
+        index:
+            product: system-symbols
+            job-name: win
+            type: generic
+        worker:
+            artifacts:
+                - name: public/build
+                  type: directory
+                  path: /builds/worker/artifacts/
+            docker-image: {in-tree: system-symbols-win}
+            max-run-time: 3600
+        run:
+            using: run-task
+            command: >-
+                ./run.sh
+        treeherder:
+            symbol: system-symbols-win
+    archlinux:
+        description: Extract ArchLinux system symbols found in crashreports
+        attributes:
+            build_platform: archlinux
+        index:
+            product: system-symbols
+            job-name: archlinux
+            type: generic
+        worker:
+            artifacts:
+                - name: public/build
+                  type: directory
+                  path: /builds/worker/artifacts/
+            docker-image: {in-tree: system-symbols-linux-scraper}
+            max-run-time: 14400
+        run:
+            using: run-task
+            command: >-
+                ./run.sh arch
+        treeherder:
+            symbol: sys-symbols-archlinux
+        fetches:
+            fetch:
+                - symbol-scrapers
+    debian:
+        description: Extract Debian system symbols found in crashreports
+        attributes:
+            build_platform: debian
+        index:
+            product: system-symbols
+            job-name: debian
+            type: generic
+        worker:
+            artifacts:
+                - name: public/build
+                  type: directory
+                  path: /builds/worker/artifacts/
+            docker-image: {in-tree: system-symbols-linux-scraper}
+            max-run-time: 14400
+        run:
+            using: run-task
+            command: >-
+                ./run.sh debian
+        treeherder:
+            symbol: sys-symbols-debian
+        fetches:
+            fetch:
+                - symbol-scrapers
+    firefox-snap:
+        description: Extract Firefox Snap symbols found in crashreports
+        attributes:
+            build_platform: firefox-snap
+        index:
+            product: system-symbols
+            job-name: firefox-snap
+            type: generic
+        worker:
+            artifacts:
+                - name: public/build
+                  type: directory
+                  path: /builds/worker/artifacts/
+            docker-image: {in-tree: system-symbols-linux-scraper}
+            max-run-time: 14400
+        run:
+            using: run-task
+            command: >-
+                ./run.sh firefox-snap
+        treeherder:
+            symbol: firefox-symbols-snap
+        fetches:
+            fetch:
+                - symbol-scrapers
+    flatpak:
+        description: Extract Firefox Flatpak symbols found in crashreports
+        attributes:
+            build_platform: firefox-flatpak
+        index:
+            product: system-symbols
+            job-name: firefox-flatpak
+            type: generic
+        worker:
+            artifacts:
+                - name: public/build
+                  type: directory
+                  path: /builds/worker/artifacts/
+            docker-image: {in-tree: system-symbols-linux-scraper}
+            max-run-time: 14400
+        run:
+            using: run-task
+            command: >-
+                ./run.sh firefox-flatpak
+        treeherder:
+            symbol: firefox-symbols-fltpk
+        fetches:
+            fetch:
+                - symbol-scrapers
+    gnome-sdk-snap:
+        description: Extract GNOME SDK Snap symbols found in crashreports
+        attributes:
+            build_platform: gnome-sdk-snap
+        index:
+            product: system-symbols
+            job-name: gnome-sdk-snap
+            type: generic
+        worker:
+            artifacts:
+                - name: public/build
+                  type: directory
+                  path: /builds/worker/artifacts/
+            docker-image: {in-tree: system-symbols-linux-scraper}
+            max-run-time: 14400
+        run:
+            using: run-task
+            command: >-
+                ./run.sh gnome-sdk-snap
+        treeherder:
+            symbol: gnome-sdk-symbols-snap
+        fetches:
+            fetch:
+                - symbol-scrapers
+    fedora:
+        description: Extract Fedora system symbols found in crashreports
+        attributes:
+            build_platform: fedora
+        index:
+            product: system-symbols
+            job-name: fedora
+            type: generic
+        worker:
+            artifacts:
+                - name: public/build
+                  type: directory
+                  path: /builds/worker/artifacts/
+            docker-image: {in-tree: system-symbols-linux-scraper}
+            max-run-time: 14400
+        run:
+            using: run-task
+            command: >-
+                ./run.sh fedora
+        treeherder:
+            symbol: sys-symbols-fedora
+        fetches:
+            fetch:
+                - symbol-scrapers
+    opensuse:
+        description: Extract OpenSUSE system symbols found in crashreports
+        attributes:
+            build_platform: opensuse
+        index:
+            product: system-symbols
+            job-name: opensuse
+            type: generic
+        worker:
+            artifacts:
+                - name: public/build
+                  type: directory
+                  path: /builds/worker/artifacts/
+            docker-image: {in-tree: system-symbols-linux-scraper}
+            max-run-time: 14400
+        run:
+            using: run-task
+            command: >-
+                ./run.sh opensuse
+        treeherder:
+            symbol: sys-symbols-opensuse
+        fetches:
+            fetch:
+                - symbol-scrapers
+    ubuntu:
+        description: Extract Ubuntu system symbols found in crashreports
+        attributes:
+            build_platform: ubuntu
+        index:
+            product: system-symbols
+            job-name: ubuntu
+            type: generic
+        worker:
+            artifacts:
+                - name: public/build
+                  type: directory
+                  path: /builds/worker/artifacts/
+            docker-image: {in-tree: system-symbols-linux-scraper}
+            max-run-time: 14400
+        run:
+            using: run-task
+            command: >-
+                ./run.sh ubuntu
+        treeherder:
+            symbol: sys-symbols-ubuntu
+        fetches:
+            fetch:
+                - symbol-scrapers
+    win-gfx:
+        description: Extract symbols from closed-source Windows graphics drivers
+        attributes:
+            build_platform: windows-graphics
+        index:
+            product: system-symbols
+            job-name: win-gfx
+            type: generic
+        worker:
+            artifacts:
+                - name: public/build
+                  type: directory
+                  path: /builds/worker/artifacts/
+            docker-image: {in-tree: system-symbols-win-gfx}
+            max-run-time: 14400
+        run:
+            using: run-task
+            command: >-
+                ./run.sh
+        treeherder:
+            symbol: sys-symbols-win-gfx
+        fetches:
+            fetch:
+                - symbol-scrapers
+    alpine:
+        description: Extract Alpine Linux system symbols found in crashreports
+        attributes:
+            build_platform: alpine
+        index:
+            product: system-symbols
+            job-name: alpine
+            type: generic
+        worker:
+            artifacts:
+                - name: public/build
+                  type: directory
+                  path: /builds/worker/artifacts/
+            docker-image: {in-tree: system-symbols-linux-scraper}
+            max-run-time: 14400
+        run:
+            using: run-task
+            command: >-
+                ./run.sh alpine
+        treeherder:
+            symbol: sys-symbols-alpine
+        fetches:
+            fetch:
+                - symbol-scrapers
diff --git a/taskcluster/ci/test/awsy.yml b/taskcluster/ci/test/awsy.yml
new file mode 100644
index 0000000000..c3cafe7e9a
--- /dev/null
+++ b/taskcluster/ci/test/awsy.yml
@@ -0,0 +1,75 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    suite: awsy
+    max-run-time: 7200
+    instance-size: xlarge
+    virtualization:
+        by-test-platform:
+            windows.*(?:-shippable)?-qr/.*: virtual-with-gpu
+            default: virtual
+    allow-software-gl-layers: false
+    mozharness:
+        script: awsy_script.py
+        config:
+            by-test-platform:
+                windows.*:
+                    - awsy/taskcluster_windows_config.py
+                macosx.*/opt:
+                    - awsy/macosx_config.py
+                default:
+                    - awsy/linux_config.py
+    tier: default
+    test-manifest-loader: null  # don't load tests in the taskgraph
+
+
+awsy:
+    description: Are we slim yet - tp5 pageset
+    treeherder-symbol: SY(sy)
+    run-on-projects: []
+
+awsy-tp6:
+    description: Are we slim yet - tp6 pageset
+    treeherder-symbol: SY(sy-tp6)
+    run-on-projects:
+        by-test-platform:
+            .*-devedition/.*: []  # don't run on devedition
+            windows.*-32.*/opt: []
+            (linux|windows|mac)(?!.*shippable).*/opt: []
+            default: [trunk]
+    mozharness:
+        extra-options:
+            - --tp6
+
+awsy-dmd:
+    description: Are we slim yet - dmd enabled
+    treeherder-symbol: SY(sy-d)
+    run-on-projects: []
+    mozharness:
+        extra-options:
+            - --dmd
+
+awsy-base:
+    description: Are we slim yet - about:blank base case
+    treeherder-symbol: SY(ab)
+    run-on-projects:
+        by-test-platform:
+            .*-devedition/.*: []  # don't run on devedition.
+            windows.*-32.*/opt: []
+            (linux|windows|mac)(?!.*shippable).*/opt: []
+            default: [trunk]
+    tier: default
+    mozharness:
+        extra-options:
+            - --base
+
+awsy-base-dmd:
+    description: Are we slim yet - about:blank base case - dmd enabled
+    treeherder-symbol: SY(ab-d)
+    run-on-projects: []
+    mozharness:
+        extra-options:
+            - --base
+            - --dmd
diff --git a/taskcluster/ci/test/browsertime-desktop.yml b/taskcluster/ci/test/browsertime-desktop.yml
new file mode 100644
index 0000000000..b1422e1b2f
--- /dev/null
+++ b/taskcluster/ci/test/browsertime-desktop.yml
@@ -0,0 +1,918 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    max-run-time:
+        by-test-platform:
+            .*-qr/.*: 2400
+            default: 1800
+    suite: raptor
+    run-on-projects:
+        by-test-platform:
+            linux.*shippable[^-qr].*: [mozilla-central]
+            default: []
+    limit-platforms:
+        by-app:
+            chrome:
+                - .*shippable.*
+            chromium:
+                - .*shippable.*
+            safari:
+                - .*macos.*shippable.*
+            custom-car:
+                - .*64.*shippable.*
+            default: []
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    tier: 3
+    virtualization: hardware
+    mozharness:
+        script: raptor_script.py
+        config:
+            by-test-platform:
+                macosx.*:
+                    - raptor/mac_config.py
+                windows.*:
+                    - raptor/windows_config.py
+                default:
+                    - raptor/linux_config.py
+        extra-options:
+            - --conditioned-profile=settled
+    fetches:
+        toolchain:
+            by-app:
+                custom-car:
+                    by-test-platform:
+                        # this satisfied taskgraph for now, but once mac/win is implemented
+                        # then linux will be the default
+                        linux.*:
+                            - linux64-custom-car
+                            - linux64-minidump-stackwalk
+                            - linux64-fix-stacks
+                        windows10-64.*:
+                            - win64-custom-car
+                            - win64-minidump-stackwalk
+                            - win64-fix-stacks
+                        macosx1015.*:
+                            - macosx64-custom-car
+                            - macosx64-minidump-stackwalk
+                            - macosx64-fix-stacks
+                        macosx1400.*:
+                            - macosx-arm64-custom-car
+                            - macosx64-aarch64-minidump-stackwalk
+                            - macosx64-aarch64-fix-stacks
+                        default: []
+                default:
+                    by-test-platform:
+                        windows.*-32.*.:
+                            - win32-minidump-stackwalk
+                            - win32-fix-stacks
+                        windows10-64.*:
+                            - win64-minidump-stackwalk
+                            - win64-fix-stacks
+                        macos.*:
+                            - macosx64-minidump-stackwalk
+                            - macosx64-fix-stacks
+                        default:
+                            - linux64-minidump-stackwalk
+                            - linux64-fix-stacks
+
+browsertime-tp6:
+    <<: &tp6-defaults
+        description: Raptor (browsertime) tp6 page-load tests
+        limit-platforms:
+            by-app:
+                chrome:
+                    - .*shippable.*
+                chromium:
+                    - .*shippable.*
+                safari:
+                    - .*macos.*shippable.*
+                custom-car:
+                    - .*64.*shippable.*
+                default: []
+        max-run-time:
+            by-subtest:
+                imgur: 4800
+                default: 4000
+        mozharness:
+            extra-options:
+                by-test-platform:
+                    windows10-64.*shippable.*-qr.*:
+                        - --chimera
+                        - --browsertime-no-ffwindowrecorder
+                        - --conditioned-profile=settled
+                        - --extra-profiler-run
+                    default:
+                        - --chimera
+                        - --conditioned-profile=settled
+                        - --extra-profiler-run
+        run-on-projects:
+            by-subtest:
+                netflix:
+                    by-app:
+                        firefox:
+                            by-test-platform:
+                                windows.*-32.*: []
+                                (macosx1015|linux|windows10-64).*shippable-qr.*: [trunk]
+                                default: []
+                        default: []
+                default:
+                    by-app:
+                        firefox:
+                            by-test-platform:
+                                windows.*-32.*: []
+                                .*64(?!.*nightlyasrelease).*shippable-qr/.*: [trunk]
+                                default: []
+                        default: []
+        treeherder-symbol: Btime(tp6)
+    raptor:
+        apps: [firefox, chrome]
+        test: tp6
+        run-visual-metrics: true
+        subtests:
+            - buzzfeed
+            - ebay
+            - espn
+            - expedia
+            - [facebook, fb]
+            - [google-docs, gdocs]
+            - [google-mail, gmail]
+            - [google-search, gsearch]
+            - imdb
+            - imgur
+            - linkedin
+            - microsoft
+            - netflix
+            - nytimes
+            - office
+            - outlook
+            - paypal
+            - pinterest
+            - reddit
+            - tumblr
+            - twitch
+            - wikia
+            - youtube
+    tier:
+        by-app:
+            firefox: 2
+            default: 3
+
+browsertime-responsiveness:
+    <<: *tp6-defaults
+    raptor:
+        apps: [firefox, chrome]
+        test: tp6
+        run-visual-metrics: true
+        subtests:
+            - cnn-nav
+            - [facebook-nav, fbnav]
+            - [reddit-billgates-ama, rdt-ama]
+            - [reddit-billgates-post-1, rdt-post-1]
+            - [reddit-billgates-post-2, rdt-post-2]
+    mozharness:
+        extra-options:
+            by-test-platform:
+                windows10-.*:
+                    - --cold
+                    - --browsertime-no-ffwindowrecorder
+                    - --conditioned-profile=settled
+                    - --extra-profiler-run
+                default:
+                    - --cold
+                    - --conditioned-profile=settled
+                    - --extra-profiler-run
+    run-on-projects:
+        by-app:
+            firefox:
+                by-test-platform:
+                    windows.*-32.*: []
+                    .*64(?!.*nightlyasrelease).*shippable-qr/.*: [trunk]
+                    default: []
+            default: []
+    tier:
+        by-app:
+            firefox: 2
+            default: 3
+
+browsertime-tp6-essential:
+    <<: *tp6-defaults
+    <<: &tp6-essential-defaults
+        mozharness:
+            extra-options:
+                by-test-platform:
+                    windows10-64.*shippable.*-qr.*:
+                        - --chimera
+                        - --browsertime-no-ffwindowrecorder
+                        - --conditioned-profile=settled
+                        - --collect-perfstats
+                        - --extra-profiler-run
+                    default:
+                        - --chimera
+                        - --conditioned-profile=settled
+                        - --extra-profiler-run
+        raptor:
+            apps: [firefox, chrome, custom-car]
+            test: tp6
+            run-visual-metrics:
+                by-test-platform:
+                    macosx1400.*shippable.*: false
+                    # Bug 1845014 Resolve osx 1300 vismet permafails
+                    default: true
+            subtests:
+                - amazon
+                - [bing-search, bing]
+                - cnn
+                - fandom
+                - [google-slides, gslides]
+                - instagram
+                - twitter
+                - wikipedia
+                - yahoo-mail
+        run-on-projects:
+            by-app:
+                firefox:
+                    by-test-platform:
+                        windows.*-32.*: []
+                        macosx1100.*shippable.*: [mozilla-central]
+                        .*64(?!.*nightlyasrelease).*shippable-qr/.*: [trunk]
+                        default: []
+                default: []
+        tier:
+            by-test-platform:
+                linux1804-64-clang-trunk-qr/opt: 2
+                default:
+                    by-app:
+                        firefox: 1
+                        default: 3
+
+browsertime-tp6-bytecode:
+    <<: *tp6-defaults
+    <<: *tp6-essential-defaults
+    raptor:
+        apps: [firefox]
+        test: tp6
+        run-visual-metrics: true
+        subtests:
+            - amazon
+            - [bing-search, bing]
+            - cnn
+            - fandom
+            - [google-slides, gslides]
+            - instagram
+            - twitter
+            - wikipedia
+            - yahoo-mail
+    run-on-projects:
+        by-app:
+            firefox:
+                by-test-platform:
+                    windows.*-32.*: []
+                    macosx1100.*shippable.*: [mozilla-central]
+                    .*64(?!.*nightlyasrelease).*shippable-qr/.*: [trunk]
+                    default: []
+            default: []
+    mozharness:
+        extra-options:
+            by-test-platform:
+                windows10-64.*shippable.*-qr.*:
+                    - --chimera
+                    - --browsertime
+                    - --browsertime-no-ffwindowrecorder
+                    - --conditioned-profile=settled
+                    - --test-bytecode-cache
+                    - --extra-profiler-run
+                default:
+                    - --chimera
+                    - --browsertime
+                    - --conditioned-profile=settled
+                    - --test-bytecode-cache
+                    - --extra-profiler-run
+    tier:
+        by-app:
+            firefox: 2
+            default: 3
+    treeherder-symbol: Btime-cache(tp6)
+
+browsertime-benchmark:
+    description: Raptor (browsertime) Benchmark tests
+    raptor:
+        apps: [firefox, chrome, safari, custom-car]
+        subtests:
+            by-test-platform:
+                macosx1400.*shippable.*:
+                    - [speedometer, sp]
+                    - [speedometer3, sp3]
+                default:
+                    by-app:
+                        firefox:
+                            - ares6
+                            - [assorted-dom, dom]
+                            - [jetstream2, js2]
+                            - [matrix-react-bench, mrb]
+                            - [motionmark-animometer, mm-a]
+                            - [motionmark-animometer-ramp, mm-ar]
+                            - [motionmark-htmlsuite-ramp, mm-hr]
+                            - [motionmark-htmlsuite, mm-h]
+                            - [speedometer, sp]
+                            - [speedometer3, sp3]
+                            - [stylebench, sb]
+                            - [sunspider, ss]
+                            - [twitch-animation, tw-a]
+                            - [unity-webgl, ugl]
+                            - [webaudio, wa]
+                        safari:
+                            - ares6
+                            - [assorted-dom, dom]
+                            - [jetstream2, js2]
+                            # - [matrix-react-bench, mrb] Perma fails on osx 10.15.x machines (Bug 1807754)
+                            - [motionmark-animometer, mm-a]
+                            - [motionmark-htmlsuite, mm-h]
+                            - [motionmark-animometer-ramp, mm-ar]
+                            - [motionmark-htmlsuite-ramp, mm-hr]
+                            - [speedometer, sp]
+                            # - [speedometer3, sp3] Perma fails on osx 10.15.x machines (Bug 1809535)
+                            - [stylebench, sb]
+                            - [sunspider, ss]
+                            - [unity-webgl, ugl]
+                            - [webaudio, wa]
+                        custom-car:
+                            - [speedometer, sp]
+                            - [speedometer3, sp3]
+                            - [motionmark-animometer-ramp, mm-ar]
+                            - [motionmark-htmlsuite-ramp, mm-hr]
+                        chrome:
+                            by-test-platform:
+                                macosx1015.*shippable.*:
+                                    - ares6
+                                    - [assorted-dom, dom]
+                                    - [jetstream2, js2]
+                                    - [matrix-react-bench, mrb]
+                                    - [motionmark-animometer, mm-a]
+                                    - [motionmark-htmlsuite, mm-h]
+                                    - [speedometer, sp]
+                                    - [speedometer3, sp3]
+                                    - [stylebench, sb]
+                                    - [sunspider, ss]
+                                    - [unity-webgl, ugl]
+                                    - [webaudio, wa]
+                                default:
+                                    - ares6
+                                    - [assorted-dom, dom]
+                                    - [jetstream2, js2]
+                                    - [matrix-react-bench, mrb]
+                                    - [motionmark-animometer, mm-a]
+                                    - [motionmark-animometer-ramp, mm-ar]
+                                    - [motionmark-htmlsuite, mm-h]
+                                    - [motionmark-htmlsuite-ramp, mm-hr]
+                                    - [speedometer, sp]
+                                    - [speedometer3, sp3]
+                                    - [stylebench, sb]
+                                    - [sunspider, ss]
+                                    - [unity-webgl, ugl]
+                                    - [webaudio, wa]
+                        default:
+                            - ares6
+                            - [assorted-dom, dom]
+                            - [jetstream2, js2]
+                            - [matrix-react-bench, mrb]
+                            - [motionmark-animometer, mm-a]
+                            - [motionmark-animometer-ramp, mm-ar]
+                            - [motionmark-htmlsuite, mm-h]
+                            - [motionmark-htmlsuite-ramp, mm-hr]
+                            - [speedometer, sp]
+                            - [speedometer3, sp3]
+                            - [stylebench, sb]
+                            - [sunspider, ss]
+                            - [unity-webgl, ugl]
+                            - [webaudio, wa]
+    treeherder-symbol: Btime()
+    tier:
+        by-app:
+            firefox:
+                by-subtest:
+                    motionmark-animometer:
+                        by-test-platform:
+                            linux1804-64-clang-trunk-qr/opt: 2
+                            default: 1
+                    default:
+                        by-test-platform:
+                            windows10-64-ccov.*/.*: 3
+                            linux64-ccov.*/.*: 3
+                            default: 2
+            default:
+                by-subtest:
+                    unity-webgl: 3
+                    default: 2
+    run-on-projects:
+        by-subtest:
+            speedometer3:
+                by-app:
+                    firefox:
+                        by-test-platform:
+                            windows.*-32.*: []
+                            .*64.*shippable-qr/.*: [trunk]
+                            .*nightlyasrelease.*: [autoland, mozilla-central]
+                            default: []
+                    custom-car:
+                        by-test-platform:
+                            (linux|windows10-64).*shippable-qr.*: [mozilla-central]
+                            default: []
+                    default: []
+            unity-webgl:
+                by-app:
+                    firefox:
+                        by-test-platform:
+                            windows.*-32.*: []
+                            # Disabled on autoland due to bug 1720063, and bug 1795826
+                            .*64.*shippable-qr/.*: [mozilla-central]
+                            default: []
+                    default: []
+            speedometer:
+                by-app:
+                    firefox:
+                        by-test-platform:
+                            windows.*-32.*: []
+                            .*64.*shippable-qr/.*: [trunk]
+                            .*nightlyasrelease.*: [autoland]
+                            default: []
+                    custom-car:
+                        by-test-platform:
+                            (linux|windows10-64).*shippable-qr.*: [mozilla-central]
+                            default: []
+                    default: []
+            default:
+                by-app:
+                    firefox:
+                        by-test-platform:
+                            windows.*-32.*: []
+                            .*64.*shippable-qr/.*: [trunk]
+                            default: []
+                    default: []
+    max-run-time:
+        by-subtest:
+            ares6: 1500
+            assorted-dom:
+                by-test-platform:
+                    .*-qr/.*: 2100
+                    default: 1500
+            jetstream2: 8000
+            matrix-react-bench: 1500
+            motionmark-htmlsuite: 1500
+            motionmark-htmlsuite-ramp: 3000
+            motionmark-animometer-ramp: 2100
+            unity-webgl: 2400
+            speedometer3:
+                by-test-platform:
+                    macosx1400.*shippable.*: 4200
+                    default: 2100
+            speedometer: 2100
+            default: 900
+    mozharness:
+        extra-options:
+            by-test-platform:
+                macosx1400.*shippable.*:
+                    - --extra-profiler-run
+                    - --page-timeout=900000
+                default:
+                    - --extra-profiler-run
+
+browsertime-benchmark-wasm:
+    description: Raptor (browsertime) WASM benchmarks
+    raptor:
+        apps: [firefox, chrome, safari]
+        subtests:
+            by-app:
+                firefox:
+                    - [wasm-godot, godot]
+                    - [wasm-godot-baseline, godot-b]
+                    - [wasm-godot-optimizing, godot-i]
+                    - [wasm-misc, wm]
+                    - [wasm-misc-baseline, wm-b]
+                    - [wasm-misc-optimizing, wm-i]
+                safari:
+                    # - [wasm-misc, wm] Perma fails (Bug 1809533)
+                    - [wasm-godot, godot]
+                default:
+                    - [wasm-misc, wm]
+                    - [wasm-godot, godot]
+    treeherder-symbol: Btime()
+    tier: 2
+    run-on-projects:
+        by-app:
+            firefox:
+                by-test-platform:
+                    windows.*-32.*: []
+                    .*64(?!.*nightlyasrelease).*shippable-qr/.*: [mozilla-central]
+                    default: []
+            default: []
+    max-run-time:
+        by-subtest:
+            wasm-godot: 1500
+            wasm-godot-baseline: 1500
+            wasm-misc-baseline: 1500
+            default: 900
+    mozharness:
+        extra-options:
+            - --extra-profiler-run
+
+browsertime-youtube-playback:
+    description: Browsertime YouTube Playback on Firefox
+    raptor:
+        apps: [firefox]
+        subtests:
+            by-app:
+                firefox:
+                    - [youtube-playback-av1-sfr, ytp-av1-sfr]
+                    - [youtube-playback-h264-sfr, ytp-h264-sfr]
+                    - [youtube-playback-hfr, ytp-hfr]
+                    - [youtube-playback-vp9-sfr, ytp-vp9-sfr]
+                    - [youtube-playback-widevine-hfr, ytp-widevine-hfr]
+                    - [youtube-playback-widevine-h264-sfr, ytp-widevine-h264-sfr]
+                    - [youtube-playback-widevine-vp9-sfr, ytp-widevine-vp9-sfr]
+    treeherder-symbol: Btime()
+    run-on-projects:
+        by-test-platform:
+            windows.*-32.*: []
+            .*64(?!.*nightlyasrelease).*shippable-qr/.*: [mozilla-central]
+            default: []
+    tier: 2
+    limit-platforms:
+        by-subtest:
+            youtube-playback-av1-sfr:
+                - macosx1015-64-shippable-qr/opt
+            default: []
+    max-run-time:
+        by-subtest:
+            youtube-playback-hfr: 3600
+            youtube-playback-widevine.*: 3600
+            default: 2700
+
+browsertime-youtube-playback-power:
+    description: Browsertime YouTube Playback on Firefox with power usage tracking
+    raptor:
+        apps: [firefox]
+        subtests:
+            by-app:
+                firefox:
+
+                    - [youtube-playback-h264-1080p30, ytp-h264-1080p30]
+                    - [youtube-playback-h264-1080p60, ytp-h264-1080p60]
+                    - [youtube-playback-h264-full-1080p30, ytp-h264-full-1080p30]
+                    - [youtube-playback-h264-full-1080p60, ytp-h264-full-1080p60]
+                    - [youtube-playback-v9-1080p30, ytp-v9-1080p30]
+                    - [youtube-playback-v9-1080p60, ytp-v9-1080p60]
+                    - [youtube-playback-v9-full-1080p30, ytp-v9-full-1080p30]
+                    - [youtube-playback-v9-full-1080p60, ytp-v9-full-1080p60]
+    treeherder-symbol: Btime()
+    run-on-projects:
+        by-test-platform:
+            macosx.*shippable-qr.*: [mozilla-central]
+            default: []
+    tier: 2
+    max-run-time: 2700
+
+browsertime-tp6-live:
+    <<: *tp6-defaults
+    description: Raptor (browsertime) tp6 on live-sites
+    mozharness:
+        extra-options:
+            - --browser-cycles=15
+            - --chimera
+            - --live-sites
+            - --extra-profiler-run
+    raptor:
+        apps: [firefox, chrome, safari]
+        test: tp6
+        run-visual-metrics: true
+        subtests:
+            by-app:
+                safari:
+                    - amazon
+                    - [bing-search, bing]
+                    - ebay
+                    # - [facebook, fb] Perma fails on osx 10.15.7
+                    - fandom
+                    - [google-docs, gdocs]
+                    - [google-mail, gmail]
+                    - [google-search, gsearch]
+                    - [google-slides, gslides]
+                    - imdb
+                    - imgur
+                    # - instagram # (see bug 1736999)
+                    - linkedin
+                    - microsoft
+                    # - netflix # Perma fails on osx 10.15.7 (Bug 1802922)
+                    # - office (site loads blank page if not signed in)
+                    # - outlook Perma fails on osx 10.15.7
+                    - paypal
+                    - pinterest
+                    - reddit
+                    - tumblr
+                    - twitch
+                    # - twitter Perma fails on osx 10.15.7
+                    - wikipedia
+                    - yahoo-mail
+                    - youtube
+                chrome:
+                    - amazon
+                    - [bing-search, bing]
+                    - ebay
+                    - [facebook, fb]
+                    - fandom
+                    - [google-docs, gdocs]
+                    - [google-mail, gmail]
+                    - [google-search, gsearch]
+                    - [google-slides, gslides]
+                    - imdb
+                    # - imgur (see bugs 1825337 & 1817420)
+                    - instagram
+                    - linkedin
+                    - microsoft
+                    - netflix
+                    # - office (site loads blank page if not signed in)
+                    - outlook
+                    - paypal
+                    - pinterest
+                    - reddit
+                    - tumblr
+                    - twitch
+                    - twitter
+                    - wikipedia
+                    - yahoo-mail
+                    - youtube
+                default:
+                    - amazon
+                    - [bing-search, bing]
+                    - ebay
+                    - [facebook, fb]
+                    - fandom
+                    - [google-docs, gdocs]
+                    - [google-mail, gmail]
+                    - [google-search, gsearch]
+                    - [google-slides, gslides]
+                    - imdb
+                    - imgur
+                    - instagram
+                    - linkedin
+                    - microsoft
+                    - netflix
+                    # - office (site loads blank page if not signed in)
+                    - outlook
+                    - paypal
+                    - pinterest
+                    - reddit
+                    - tumblr
+                    - twitch
+                    - twitter
+                    - wikipedia
+                    - yahoo-mail
+                    - youtube
+    run-on-projects: []
+    tier: 3
+    treeherder-symbol: Btime-live(tp6)
+
+browsertime-tp6-live-sheriffed:
+    <<: *tp6-defaults
+    raptor:
+        apps: [firefox]
+        test: tp6
+        run-visual-metrics: true
+        subtests:
+            - cnn
+    description: Raptor (browsertime) tp6 on live-sites
+    mozharness:
+        extra-options:
+            - --browser-cycles=5
+            - --chimera
+            - --live-sites
+            - --extra-profiler-run
+            - --browsertime-arg=maxLoadTime=240000
+    run-on-projects:
+        by-test-platform:
+            (linux|windows10-64|macos)(?!.*shippable).*: []
+            (linux|windows|macosx1015)(?!.*-qr).*: []
+            windows.*-32.*: []
+            default: []
+    tier: 2
+    treeherder-symbol: Btime-live(tp6)
+
+browsertime-tp6-profiling:
+    <<: *tp6-defaults
+    raptor:
+        apps: [firefox]
+        test: tp6
+        run-visual-metrics: true
+        subtests: [amazon]
+    description: Raptor (browsertime) tp6 page-load tests with Gecko Profiling
+    mozharness:
+        extra-options:
+            - --chimera
+            - --gecko-profile
+    run-on-projects:
+        by-test-platform:
+            (linux|windows|macosx1015).*shippable-qr.*: [mozilla-central]
+            default: []
+    tier: 2
+    treeherder-symbol: Btime-Prof(tp6)
+
+browsertime-custom:
+    raptor:
+        apps: [firefox]
+        run-visual-metrics: true
+        subtests: [[process-switch, ps]]
+    description: Raptor (browsertime) custom pageload tests
+    max-run-time: 2700
+    mozharness:
+        extra-options:
+            - --chimera
+            - --extra-profiler-run
+    run-on-projects:
+        by-test-platform:
+            windows.*-32.*: []
+            .*64(?!.*nightlyasrelease).*shippable-qr/.*: [mozilla-central]
+            default: []
+    tier: 1
+    treeherder-symbol: Btime(ps)
+
+browsertime-first-install:
+    raptor:
+        apps: [firefox]
+        run-visual-metrics: true
+        subtests: [welcome]
+    description: Raptor (browsertime) custom pageload tests
+    max-run-time: 2700
+    mozharness:
+        extra-options:
+            - --chimera
+            - --extra-profiler-run
+    run-on-projects:
+        by-test-platform:
+            windows.*-32.*: []
+            .*64(?!.*nightlyasrelease).*shippable-qr/.*: [trunk]
+            default: []
+    tier: 1
+    treeherder-symbol: Btime(welcome)
+
+browsertime-regression-tests:
+    raptor:
+        apps: [firefox]
+        subtests: [[constant-regression, regress-c]]
+    description: Raptor (browsertime) tests for our regression detection system
+    max-run-time: 700
+    run-on-projects: [autoland]
+    limit-platforms:
+        - .*linux(?!.*shippable)(?!.*clang).*
+    mozharness:
+        extra-options:
+            by-test-platform:
+                windows10-64.*shippable.*-qr.*: []
+                default: []
+    tier: 2
+    treeherder-symbol: Btime(regressor)
+
+browsertime-upload:
+    raptor:
+        apps: [firefox, chrome, safari]
+        subtests:
+            - [upload, upload-h2]
+            - upload-h3
+    description: Raptor (browsertime) http2, http3 file upload performance test
+    max-run-time: 2700
+    run-on-projects:
+        by-app:
+            firefox:
+                by-test-platform:
+                    windows.*-32.*: []
+                    .*64.*shippable-qr/.*: [autoland, mozilla-central]
+                    default: []
+            default: []
+    tier: 3
+    treeherder-symbol: Btime(upload)
+    fetches:
+        fetch:
+            - upload-speed-test-file
+
+browsertime-pageload-benchmark:
+    raptor:
+        apps: [firefox]
+        subtests: [tp6-bench]
+    description: Raptor (browsertime) TP6 pageload benchmark test
+    max-run-time: 4500
+    mozharness:
+        extra-options:
+            - --browser-cycles=5
+    run-on-projects: []
+    tier: 2
+    treeherder-symbol: Btime(tp6-bench)
+
+browsertime-speculative:
+    raptor:
+        apps: [firefox]
+        run-visual-metrics: true
+        subtests: [connect]
+    description: Raptor (browsertime) speculative connect pageload tests
+    max-run-time: 420
+    run-on-projects:
+        by-test-platform:
+            windows.*-32.*: []
+            .*64.*shippable-qr/.*: [autoland]
+            default: []
+    tier: 2
+    treeherder-symbol: Btime(speculative)
+
+browsertime-throttled:
+    raptor:
+        apps: [firefox]
+        run-visual-metrics: true
+        subtests: [throttled]
+    description: Raptor (browsertime) throttled network pageload tests
+    max-run-time: 420
+    run-on-projects: []
+    tier: 3
+    treeherder-symbol: Btime(throttled)
+
+browsertime-tp6-webextensions:
+    <<: *tp6-defaults
+    <<: *tp6-essential-defaults
+    description: Raptor (browsertime) tp6 page-load tests with webextensions installed on Firefox Desktop
+    raptor:
+        apps: [firefox]
+        test: tp6
+        run-visual-metrics: true
+        subtests:
+            - amazon
+    fetches:
+        fetch:
+            - firefox-addons
+    run-on-projects:
+        by-app:
+            firefox:
+                by-test-platform:
+                    windows.*-32.*: []
+                    macosx1100.*shippable.*: [mozilla-central]
+                    .*64(?!.*nightlyasrelease).*shippable-qr/.*: [trunk-only]
+                    default: []
+            default: []
+    mozharness:
+        extra-options:
+            by-test-platform:
+                windows10-64.*shippable.*-qr.*:
+                    - --chimera
+                    - --browsertime
+                    - --browsertime-no-ffwindowrecorder
+                    - --conditioned-profile=settled-webext
+                default:
+                    - --chimera
+                    - --browsertime
+                    - --conditioned-profile=settled-webext
+    # TODO(Bug 1867781): promote to tier 2 after confirming no issue have been caught while runing as tier 3.
+    tier: 3
+    treeherder-symbol: Btime-webext(tp6)
+
+browsertime-indexeddb:
+    description: Raptor (browsertime) tests for IndexedDB
+    max-run-time: 2700
+    treeherder-symbol: Btime(idb)
+    limit-platforms:
+        by-app:
+            chrome:
+                - .*shippable.*
+            chromium:
+                - .*shippable.*
+            custom-car:
+                - .*64.*shippable.*
+            default: []
+    raptor:
+        apps: [firefox, chrome, chromium]
+        run-visual-metrics: false
+        subtests:
+            - addMab1
+            - addMabN
+            - addMar1
+            - addMarN
+            - addMbl1
+            - addMblN
+            - addkAB1
+            - addkABN
+            - addkAR1
+            - addkARN
+            - addkBL1
+            - addkBLN
+            - getkeyrng
+    run-on-projects:
+        by-app:
+            firefox:
+                by-test-platform:
+                    windows.*-32.*: []
+                    .*64.*shippable-qr/.*: [autoland, mozilla-central]
+                    default: []
+            default: []
+    tier:
+        by-app:
+            firefox: 2
+            default: 3
+    mozharness:
+        extra-options:
+            - --extra-profiler-run
diff --git a/taskcluster/ci/test/browsertime-mobile.yml b/taskcluster/ci/test/browsertime-mobile.yml
new file mode 100644
index 0000000000..89bbc5fb6b
--- /dev/null
+++ b/taskcluster/ci/test/browsertime-mobile.yml
@@ -0,0 +1,456 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    max-run-time: 3600
+    suite: raptor
+    variants:
+        - geckoview-no-fission
+    run-on-projects: []
+    tier: 3
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    target:
+        by-app:
+            fenix:
+                by-test-platform:
+                    android-hw.*-aarch64.*/.*:
+                        index: mobile.v3.firefox-android.apks.fenix-nightly.latest.arm64-v8a
+                        name: build/target.arm64-v8a.apk
+                    default:
+                        index: mobile.v3.firefox-android.apks.fenix-nightly.latest.armeabi-v7a
+                        name: build/target.armeabi-v7a.apk
+            refbrow:
+                by-test-platform:
+                    android-hw.*-aarch64.*/.*:
+                        index: mobile.v2.reference-browser.raptor.latest.arm64-v8a
+                        name: target.arm64-v8a.apk
+                    default:
+                        index: mobile.v2.reference-browser.raptor.latest.armeabi-v7a
+                        name: target.armeabi-v7a.apk
+            default: geckoview_example.apk
+    virtualization: hardware
+    raptor:
+        activity:
+            by-app:
+                fenix: org.mozilla.fenix.IntentReceiverActivity
+                geckoview: org.mozilla.geckoview_example.GeckoViewActivity
+                refbrow: org.mozilla.reference.browser.BrowserTestActivity
+                default: None
+        binary-path:
+            by-app:
+                fenix: org.mozilla.fenix
+                geckoview: org.mozilla.geckoview_example
+                refbrow: org.mozilla.reference.browser.raptor
+                default: None
+    mozharness:
+        script: raptor_script.py
+        config:
+            - raptor/android_hw_config.py
+        extra-options:
+            # Bug 1635749, disable window recorder temporarily
+            - --browsertime-no-ffwindowrecorder
+    optimization:
+        skip-unless-backstop: null
+    limit-platforms:
+        by-app:
+            chrome-m:
+                - .*shippable-qr.*
+            cstm-car-m:
+                - .*shippable-qr.*
+            default: []
+    fetches:
+        toolchain:
+            by-app:
+                cstm-car-m:
+                    - android-custom-car
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+                default:
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+
+browsertime-tp6m:
+    <<: &tp6m-defaults
+        description: Raptor (browsertime) tp6 page-load tests on android
+        max-run-time:
+            by-subtest:
+                reddit:
+                    by-app:
+                        geckoview: 7200
+                        default: 3600
+                imdb:
+                    by-app:
+                        geckoview: 7200
+                        default: 3600
+                default: 3600
+        mozharness:
+            extra-options:
+                - --chimera
+        tier:
+            by-app:
+                geckoview: 1
+                refbrow: 2
+                default: 3
+        treeherder-symbol: Btime(tp6m)
+    raptor:
+        apps: [geckoview, fenix, chrome-m, refbrow]
+        run-visual-metrics: true
+        test: tp6m
+        subtests:
+            - amazon
+            - bing
+            - [bing-search-restaurants, bing-s-r]
+            - booking
+            - cnn
+            - [cnn-ampstories, cnn-amp]
+            - dailymail
+            - [ebay-kleinanzeigen, ebay-k]
+            - [ebay-kleinanzeigen-search, ebay-k-s]
+            - [facebook-cristiano, fb-cris]
+            - [google-maps, gmaps]
+            - [google-search-restaurants, gsearch-r]
+            - instagram
+            - imdb
+            - reddit
+            - sina
+            - [stackoverflow, stacko]
+            - web-de
+            - wikipedia
+            - youtube
+    run-on-projects:
+        by-app:
+            geckoview:
+                by-variant:
+                    geckoview-no-fission:
+                        by-test-platform:
+                            android-hw-a51.*shippable-qr.*: [trunk-only]
+                            default: []
+                    default:
+                        by-subtest:
+                            wikipedia:
+                                by-test-platform:
+                                    android-hw-a51.*shippable-qr.*: []
+                                    default: []
+                            google-search-restaurants:
+                                by-test-platform:
+                                    android-hw-a51.*shippable-qr.*: []
+                                    default: []
+                            default:
+                                by-test-platform:
+                                    android-hw-a51.*shippable-qr.*: []
+                                    default: []
+            default: []
+
+browsertime-tp6m-essential:
+    <<: *tp6m-defaults
+    run-without-variant: false
+    raptor:
+        apps: [geckoview, fenix, chrome-m, refbrow]
+        run-visual-metrics: true
+        test: tp6m
+        subtests:
+            - allrecipes
+            - [amazon-search, amazon-s]
+            - espn
+            # Bug 1682027 - Disabled due to high failure rate
+            # - facebook
+            - google
+            - [microsoft-support, micros-sup]
+            - [youtube-watch, youtube-w]
+    run-on-projects:
+        by-app:
+            geckoview:
+                by-subtest:
+                    allrecipes:
+                        by-test-platform:
+                            android-hw-a51.*shippable.*: [trunk]
+                            default: []
+                    default:
+                        by-test-platform:
+                            android-hw-a51.*shippable.*: [trunk-only]
+                            default: []
+            default: []
+    tier:
+        by-app:
+            geckoview: 1
+            refbrow: 2
+            default: 3
+
+browsertime-tp6m-webextensions:
+    <<: *tp6m-defaults
+    description: Raptor (browsertime) tp6 page-load tests with webextensions installed on android
+    treeherder-symbol: Btime-webext(tp6m)
+    run-without-variant: false
+    mozharness:
+        extra-options:
+            - --chimera
+            - --browsertime-no-ffwindowrecorder
+            - --conditioned-profile=settled-webext
+            - --browser-cycles=5
+    raptor:
+        apps: [fenix]
+        run-visual-metrics: true
+        test: tp6m
+        subtests:
+            - [amazon-search, amazon-s]
+    fetches:
+        fetch:
+            - firefox-addons
+    run-on-projects:
+        by-app:
+            fenix:
+                by-test-platform:
+                    android-hw-a51.*shippable.*: [mozilla-central]
+                    default: []
+            default: []
+    # TODO(Bug 1867781): promote to tier 2 after confirming no issue have been caught while runing as tier 3.
+    tier: 3
+
+browsertime-youtube-playback-mobile:
+    description: Browsertime YouTube Playback on Android
+    treeherder-symbol: Btime(ytp)
+    run-without-variant: false
+    raptor:
+        apps: [fenix, geckoview, refbrow]
+        subtests:
+            by-test-platform:
+                android-hw-a51.*:
+                    - [youtube-playback-h264-sfr, ytp-h264-sfr]
+                    - [youtube-playback-hfr, ytp-hfr]
+                    # Bug 1699469 - Disabled until a crash is fixed.
+                    # - [youtube-playback-widevine-h264-sfr, ytp-widevine-h264-sfr]
+                    # - [youtube-playback-widevine-hfr, ytp-widevine-hfr]
+        test-url-param:
+            by-subtest:
+                youtube-playback-h264-sfr:  # remove high resolution tests
+                    exclude=1,2,
+                    23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38
+                youtube-playback-hfr:
+                    by-test-platform:
+                        android-hw-a51.*:  # remove VP9(1-34) and AV1(51-74) tests
+                            exclude=1,2,
+                            3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
+                            51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74
+                        default: ""
+                youtube-playback-widevine-hfr:
+                    by-test-platform:
+                        android-hw-a51.*:  # remove VP9(1-34) tests
+                            exclude=1,2,
+                            3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34
+                        default: ""
+                default: ""
+    run-on-projects:
+        by-app:
+            geckoview:
+                by-test-platform:
+                    android-hw-a51.*shippable.*: [mozilla-central]
+                    default: []
+            default: []
+    max-run-time: 3600
+
+browsertime-tp6m-live:
+    <<: *tp6m-defaults
+    run-without-variant: false
+    raptor:
+        apps: [chrome-m, fenix, geckoview]
+        run-visual-metrics: true
+        test: tp6m
+        subtests:
+            - allrecipes
+            - amazon
+            - [amazon-search, amazon-s]
+            - bing
+            - [bing-search-restaurants, bing-s-r]
+            - booking
+            - booking-sf
+            - cnn
+            - [cnn-ampstories, cnn-amp]
+            - dailymail
+            - discord
+            - [ebay-kleinanzeigen, ebay-k]
+            - [ebay-kleinanzeigen-search, ebay-k-s]
+            - espn
+            - expedia
+            - facebook
+            - [facebook-cristiano, fb-cris]
+            - [fashionbeans, fashbea]
+            - google
+            - [google-accounts, gacc]
+            - [google-maps, gmaps]
+            - [google-search-restaurants, gsearch-r]
+            - instagram
+            - imdb
+            - [imdb-firefox, imdb-f]
+            - [medium-article, medium]
+            - [microsoft-support, micros-sup]
+            - nytimes
+            - [people-article, people]
+            - reddit
+            - [reddit-thread, reddit-thr]
+            - rumble-fox
+            - [stackoverflow, stacko]
+            - [stackoverflow-question, stack-q]
+            - [urbandictionary-define, urbict-def]
+            - web-de
+            - [wikia-marvel, wikia-m]
+            - wikipedia
+            - youtube
+            - [youtube-watch, youtube-w]
+    mozharness:
+        extra-options:
+            - --live-sites
+            - --chimera
+    run-on-projects:
+        by-subtest:
+            cnn-ampstories:
+                by-app:
+                    geckoview:
+                        by-test-platform:
+                            android-hw-a51.*shippable-qr.*: [autoland]
+                            default: []
+                    default: []
+            default: []
+    tier: 3
+    treeherder-symbol: Btime-live(tp6m)
+
+browsertime-tp6m-profiling:
+    description: Raptor (browsertime) tp6 page-load tests on android with Gecko profiling
+    run-without-variant: false
+    raptor:
+        apps: [geckoview]
+        test: tp6m
+        subtests: [amazon, youtube]
+    treeherder-symbol: Btime-Prof(tp6m)
+    mozharness:
+        script: raptor_script.py
+        config:
+            - raptor/android_hw_config.py
+        extra-options:
+            - --chimera
+            - --gecko-profile
+    run-on-projects:
+        by-test-platform:
+            android-hw-(a51).*aarch64-shippable-qr/opt: [mozilla-central]
+            default: []
+
+browsertime-benchmark-speedometer-mobile:
+    description: Browsertime Speedometer on Android
+    run-without-variant: false
+    raptor:
+        apps: [geckoview, fenix, chrome-m, cstm-car-m]
+    tier:
+        by-app:
+            fenix: 1
+            default: 3
+    run-on-projects:
+        by-app:
+            refbrow: []
+            geckoview:
+                by-test-platform:
+                    android-hw-a51.*shippable-qr.*: [trunk]
+                    default: []
+            cstm-car-m:
+                by-test-platform:
+                    android-hw-p6.*shippable-qr.*: []
+                    android-hw-s21.*shippable-qr.*: []
+                    default: [mozilla-central]
+            default: []
+    treeherder-symbol: Btime(sp)
+    mozharness:
+        extra-options:
+            - --test=speedometer
+
+browsertime-benchmark-speedometer3-mobile:
+    description: Browsertime Speedometer 3 on Android
+    run-without-variant: false
+    raptor:
+        apps: [geckoview, fenix, chrome-m, cstm-car-m]
+    tier:
+        by-app:
+            fenix: 2
+            geckoview: 2
+            default: 3
+    run-on-projects:
+        by-app:
+            refbrow: []
+            geckoview:
+                by-test-platform:
+                    android-hw-a51.*shippable-qr.*: [trunk-only]
+                    default: []
+            cstm-car-m:
+                by-test-platform:
+                    android-hw-p6.*shippable-qr.*: []
+                    android-hw-s21.*shippable-qr.*: []
+                    default: [mozilla-central]
+            default: []
+    treeherder-symbol: Btime(sp3)
+    mozharness:
+        extra-options:
+            - --test=speedometer3
+
+browsertime-benchmark-motionmark:
+    description: Raptor (browsertime) Motionmark benchmark tests
+    run-without-variant: false
+    raptor:
+        apps: [fenix, chrome-m, geckoview]
+        subtests:
+            - [motionmark-animometer, mm-a]
+            - [motionmark-animometer-ramp, mm-ar]
+            - [motionmark-htmlsuite, mm-h]
+            - [motionmark-htmlsuite-ramp, mm-hr]
+    run-on-projects:
+        by-app:
+            chrome-m: []
+            default:
+                by-test-platform:
+                    android-hw-a51-.*aarch64-shippable-qr.*: [mozilla-central]
+                    default: []
+    treeherder-symbol: Btime()
+    tier: 2
+
+browsertime-benchmark-unity-webgl-mobile:
+    description: Browsertime Unity WebGL on Android
+    run-without-variant: false
+    raptor:
+        apps: [geckoview, refbrow, fenix, chrome-m]
+    tier:
+        by-app:
+            geckoview: 2
+            default: 3
+    treeherder-symbol: Btime(ugl)
+    run-on-projects:
+        by-app:
+            refbrow: []
+            geckoview:
+                by-test-platform:
+                    # Disabled on autoland due to bug 1720063, and bug 1795826
+                    android-hw-a51-.*aarch64-shippable-qr.*: [mozilla-central]
+                    default: []
+            default:
+                by-test-platform:
+                    android-hw-a51-.*aarch64-shippable-qr.*: [mozilla-central]
+                    default: []
+    max-run-time:
+        by-test-platform:
+            anrdroid-hw-a51.*: 1500
+            default: 900
+    mozharness:
+        extra-options:
+            - --test=unity-webgl
+
+browsertime-power:
+    description: Browsertime Power Usage Tests on Android
+    run-without-variant: false
+    raptor:
+        apps: [geckoview, fenix, refbrow]
+        subtests:
+            - idle
+            - idle-bg
+            - [speedometer, sp]
+    tier: 2
+    run-on-projects: []
+    treeherder-symbol: Btime-P(power)
+    mozharness:
+        extra-options:
+            - --power-test
diff --git a/taskcluster/ci/test/compiled.yml b/taskcluster/ci/test/compiled.yml
new file mode 100644
index 0000000000..08434d5ac7
--- /dev/null
+++ b/taskcluster/ci/test/compiled.yml
@@ -0,0 +1,135 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    run-without-variant: false
+    variants:
+        - 1proc
+    virtualization: virtual
+    mozharness:
+        script:
+            by-test-platform:
+                android-em.*: android_emulator_unittest.py
+                android-hw.*: android_hardware_unittest.py
+                default: desktop_unittest.py
+        config:
+            by-test-platform:
+                android-em-7.*:
+                    - android/android_common.py
+                    - android/android-x86_64.py
+                android-hw.*:
+                    - android/android_common.py
+                    - android/android_hw.py
+                linux.*:
+                    - unittests/linux_unittest.py
+                    - remove_executables.py
+                macosx.*:
+                    - unittests/mac_unittest.py
+                windows.*:
+                    - unittests/win_unittest.py
+    supports-artifact-builds: false
+
+cppunittest:
+    description: "CPP Unit Tests"
+    suite: cppunittest
+    treeherder-symbol: cppunit
+    target:
+        by-test-platform:
+            android-em-7.*: geckoview-test_runner.apk
+            default: null
+    tier: default
+    run-on-projects:
+        by-variant:
+            1proc: built-projects
+            default: []
+
+gtest:
+    description: "GTests run"
+    suite: gtest
+    treeherder-symbol: GTest
+    instance-size: xlarge
+    run-on-projects:
+        by-variant:
+            1proc:
+                by-test-platform:
+                    .*android.*: built-projects
+                    .*(devedition|tsan|wayland).*: []
+                    linux1804-32-qr/opt: []  # try only, shippable on m-c
+                    linux1804-32-qr/debug: ['mozilla-central']  # try and m-c
+                    linux1804-32-shippable-qr/opt: ['mozilla-central']  # try and m-c
+                    default: built-projects
+            default: []
+    target:
+        by-test-platform:
+            android-em-7.*: geckoview-test_runner.apk
+            default: null
+    tier: default
+
+jittest:
+    description: "JIT Test run"
+    suite: jittest
+    treeherder-symbol: Jit
+    run-on-projects:
+        by-variant:
+            1proc:
+                by-test-platform:
+                    android-hw-.*-aarch64-qr/debug: ['mozilla-central', 'release']
+                    android-hw-.*-arm7-qr/debug: ['mozilla-central', 'release']
+                    default: built-projects
+            default: []
+    chunks:
+        by-test-platform:
+            windows.*-ccov-qr/opt: 8
+            windows.*: 1
+            macosx.*/opt: 1
+            macosx.*/debug: 3
+            android.*: 10
+            default: 6
+    max-run-time:
+        by-test-platform:
+            windows.*-ccov.*/.*: 7200
+            macosx.*-ccov.*/.*: 7200
+            android-hw.*: 5400
+            default: 3600
+    mozharness:
+        chunked:
+            by-test-platform:
+                windows.*: false
+                macosx.*: false
+                default: true
+    target:
+        by-test-platform:
+            android-.*: geckoview-test_runner.apk
+            default: null
+    tier:
+        by-test-platform:
+            android-hw.*: 2
+            default: default
+
+jittest-all:
+    description: "JIT Test run with all flags for android arm7 opt"
+    suite: jittest
+    treeherder-symbol: Jit
+    run-on-projects:
+        by-test-platform:
+            android-hw-.*-arm7(?:-shippable)?-qr/.*: ['mozilla-central', 'release']
+            default: []
+    chunks: 10
+    max-run-time: 3600
+    mozharness:
+        chunked: true
+        extra-options:
+            by-test-platform:
+                android.*:
+                    - --jittest-flags=all
+                default: None
+    target:
+        by-test-platform:
+            android-.*: geckoview-test_runner.apk
+            default: null
+    tier:
+        by-test-platform:
+            android-hw.*: 2
+            default: default
diff --git a/taskcluster/ci/test/firefox-ui.yml b/taskcluster/ci/test/firefox-ui.yml
new file mode 100644
index 0000000000..c45bb3d138
--- /dev/null
+++ b/taskcluster/ci/test/firefox-ui.yml
@@ -0,0 +1,27 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    suite:
+        category: firefox-ui
+    max-run-time: 5400
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    run-on-projects: built-projects
+    mozharness:
+        script: firefox_ui_tests.py
+        config:
+            by-test-platform:
+                windows.*:
+                    - firefox_ui_tests/taskcluster_windows.py
+                macosx.*:
+                    - firefox_ui_tests/taskcluster.py
+                    - firefox_ui_tests/taskcluster_mac.py
+                linux.*:
+                    - firefox_ui_tests/taskcluster.py
+                    - remove_executables.py
+
+firefox-ui-functional:
+    description: "Firefox-ui-tests functional run"
+    treeherder-symbol: Fxfn(en-US)
+    tier: 2
diff --git a/taskcluster/ci/test/kind.yml b/taskcluster/ci/test/kind.yml
new file mode 100644
index 0000000000..514fb648c4
--- /dev/null
+++ b/taskcluster/ci/test/kind.yml
@@ -0,0 +1,88 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.test:loader
+
+kind-dependencies:
+    - build
+    - build-signing
+    - repackage-signing-shippable-l10n-msix
+    - repackage-signing-msix
+    - repackage-signing
+    - repackage
+    - fetch
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.test:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+# Each stanza in a file pointed to by 'jobs-from' describes a particular test
+# suite or sub-suite. These are processed through the transformations described
+# above to produce a bunch of tasks. See the schema in
+# `taskcluster/gecko_taskgraph/transforms/test/__init__.py` for a description of the fields
+# used in these files.
+
+# Adding a new test type or running tests on a new platform? Be sure to review
+# https://wiki.mozilla.org/Sheriffing/Job_Visibility_Policy
+
+jobs-from:
+    - awsy.yml
+    - browsertime-desktop.yml
+    - browsertime-mobile.yml
+    - compiled.yml
+    - firefox-ui.yml
+    - marionette.yml
+    - misc.yml
+    - mochitest.yml
+    - reftest.yml
+    - talos.yml
+    - web-platform.yml
+    - xpcshell.yml
+
+job-defaults:
+    attributes:
+        retrigger: true
+    require-signed-extensions:
+        by-release-type:
+            release|esr.*: true
+            beta:
+                by-test-platform:
+                    .*-devedition/.*: false
+                    default: true
+            default: false
+    mozharness:
+        requires-signed-builds:
+            by-test-platform:
+                macosx1100.*: true
+                windows1.*:
+                    by-variant:
+                        msix: true
+                        default: false
+                default: false
+    fetches:
+        toolchain:
+            by-test-platform:
+                win.*:
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                macosx1015.*:
+                    - macosx64-minidump-stackwalk
+                    - macosx64-fix-stacks
+                macosx1100.*:
+                    - macosx64-aarch64-minidump-stackwalk
+                    - macosx64-aarch64-fix-stacks
+                macosx1400.*:
+                    - macosx64-aarch64-minidump-stackwalk
+                    - macosx64-aarch64-fix-stacks
+                android-em-7.*:
+                    - android-system-image-x86_64-linux
+                    - android-avd-x86_64-linux
+                    - android-emulator-linux
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+                default:
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
diff --git a/taskcluster/ci/test/marionette.yml b/taskcluster/ci/test/marionette.yml
new file mode 100644
index 0000000000..d586a6cf24
--- /dev/null
+++ b/taskcluster/ci/test/marionette.yml
@@ -0,0 +1,54 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    suite: marionette
+    mozharness:
+        script: marionette.py
+        config:
+            by-test-platform:
+                macosx.*:
+                    - marionette/prod_config.py
+                    - marionette/mac_taskcluster_config.py
+                windows.*:
+                    - marionette/windows_taskcluster_config.py
+                default:
+                    - marionette/prod_config.py
+                    - remove_executables.py
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    tier:
+        by-variant:
+            headless: 2
+            default: default
+    variants:
+        - webrender-sw
+        - headless
+    run-on-projects:
+        by-variant:
+            headless:
+                by-test-platform:
+                    (linux.*64)(-shippable)?-qr/opt: built-projects
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    .*wayland.*: []
+                    .*/debug: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    .*(tsan|wayland).*: []
+                    default: built-projects
+    virtualization: virtual
+
+marionette:
+    description: "Marionette unittest run"
+    treeherder-symbol: Mn
+    max-run-time:
+        by-test-platform:
+            .*asan.*: 5400
+            .*ccov.*: 3600
+            .*debug.*: 3600
+            default: 2700
+    instance-size: default
+    chunks: 1
diff --git a/taskcluster/ci/test/misc.yml b/taskcluster/ci/test/misc.yml
new file mode 100644
index 0000000000..b31860a165
--- /dev/null
+++ b/taskcluster/ci/test/misc.yml
@@ -0,0 +1,269 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    test-manifest-loader: null  # don't load tests in the taskgraph
+
+geckoview-junit:
+    description: "Geckoview junit run"
+    suite: geckoview-junit
+    variants: ["geckoview-fission", "no-fission"]
+    treeherder-symbol: gv-junit
+    loopback-video: true
+    target: geckoview-androidTest.apk
+    max-run-time: 3600
+    run-on-projects:
+        by-variant:
+            geckoview-fission: ['trunk']
+            no-fission: built-projects
+            default: []
+    tier: default
+    mozharness:
+        script: android_emulator_unittest.py
+        config:
+            by-test-platform:
+                android-em-7.*:
+                    - android/android_common.py
+                    - android/android-x86_64.py
+        extra-options:
+            - --test-suite=geckoview-junit
+
+telemetry-tests-client:
+    description: "Telemetry tests client run"
+    suite: telemetry-tests-client
+    treeherder-symbol: tt(c)
+    run-on-projects: built-projects
+    max-run-time: 1200
+    tier: default
+    mozharness:
+        script: telemetry/telemetry_client.py
+        config:
+            by-test-platform:
+                linux.*:
+                    - remove_executables.py
+                windows.*: []
+                macosx.*: []
+
+test-verify:
+    description: "Extra verification of tests modified on this push"
+    suite: test-verify
+    treeherder-symbol: TV
+    loopback-video: true
+    max-run-time: 10800
+    allow-software-gl-layers: false
+    variants:
+        - no-fission
+    run-on-projects:
+        by-variant:
+            no-fission:
+                by-test-platform:
+                    # do not run on ccov or asan or shippable or wayland
+                    .*(-ccov|-asan|-shippable|-wayland).*: []
+                    # we prefer -qr platforms with fis, no need to run on both
+                    (?!.*(-ccov|-asan|-shippable))(?!.*-qr).*: []
+                    # do not run on mozilla-central, beta or release: usually just confirms earlier results
+                    android.*: ['integration']
+                    default: []
+            default:
+                by-test-platform:
+                    # do not run on ccov or asan or shippable or wayland
+                    .*(-ccov|-asan|-shippable|-wayland).*: []
+                    # we prefer -qr platforms with fis, no need to run on both
+                    (?!.*(-ccov|-asan|-shippable))(?!.*-qr).*: []
+                    # do not run on mozilla-central, beta or release: usually just confirms earlier results
+                    android.*: []
+                    default: ['integration']
+    built-projects-only: true
+    target:
+        by-test-platform:
+            android-em-7.*: geckoview-test_runner.apk
+            default: null
+    optimization:
+        test-verify: ["test-verify"]
+    tier: 2
+    mozharness:
+        script:
+            by-test-platform:
+                android-em.*: android_emulator_unittest.py
+                default: desktop_unittest.py
+        config:
+            by-test-platform:
+                android-em-7.*:
+                    - android/android_common.py
+                    - android/android-x86_64.py
+                linux.*:
+                    - unittests/linux_unittest.py
+                    - remove_executables.py
+                macosx.*:
+                    - unittests/mac_unittest.py
+                windows.*:
+                    - unittests/win_unittest.py
+        extra-options:
+            - --verify
+    fetches:
+        toolchain:
+            by-test-platform:
+                linux.*:
+                    - linux64-node
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+                macosx.*:
+                    - macosx64-node
+                    - macosx64-minidump-stackwalk
+                    - macosx64-fix-stacks
+                win.*-64.*:
+                    - win64-node
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                win.*32.*:
+                    - win32-node
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                android-em-7.*:
+                    - android-emulator-linux
+                    - android-system-image-x86_64-linux
+                    - android-avd-x86_64-linux
+                    - linux64-node
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+
+test-verify-gpu:
+    description: "Extra verification of tests modified on this push on gpu instances"
+    suite:
+        category: test-verify
+        name: test-verify-gpu
+    treeherder-symbol: TVg
+    loopback-video: true
+    virtualization: virtual-with-gpu
+    max-run-time: 10800
+    allow-software-gl-layers: false
+    run-on-projects:
+        by-test-platform:
+            # do not run on ccov or asan or shippable or wayland
+            .*(-ccov|-asan|-shippable|-wayland).*: []
+            # do not run on mozilla-central, beta or release: usually just confirms earlier results
+            linux.*: ['integration']
+            default: []
+    built-projects-only: true
+    optimization:
+        test-verify: ["test-verify-gpu"]
+    tier: 2
+    mozharness:
+        script:
+            by-test-platform:
+                android-em.*: android_emulator_unittest.py
+                default: desktop_unittest.py
+        config:
+            by-test-platform:
+                android-em-7.*:
+                    - android/android_common.py
+                    - android/android-x86_64.py
+                linux.*:
+                    - unittests/linux_unittest.py
+                    - remove_executables.py
+                macosx.*:
+                    - unittests/mac_unittest.py
+                windows.*:
+                    - unittests/win_unittest.py
+        extra-options:
+            - --verify
+            - --gpu-required
+
+test-coverage:
+    description: "Per-test coverage"
+    suite: test-coverage
+    treeherder-symbol: TC
+    loopback-video: true
+    instance-size: default
+    max-run-time: 10800
+    allow-software-gl-layers: false
+    run-on-projects:
+        by-test-platform:
+            .*-ccov.*/.*: built-projects
+            default: []
+    tier: 2
+    mozharness:
+        script:
+            by-test-platform:
+                android-em.*: android_emulator_unittest.py
+                default: desktop_unittest.py
+        config:
+            by-test-platform:
+                android-em-7.*:
+                    - android/android_common.py
+                    - android/android-x86_64.py
+                linux.*:
+                    - unittests/linux_unittest.py
+                    - remove_executables.py
+                macosx.*:
+                    - unittests/mac_unittest.py
+                windows.*:
+                    - unittests/win_unittest.py
+        extra-options:
+            - --per-test-coverage
+    fetches:
+        toolchain:
+            by-test-platform:
+                linux.*:
+                    - linux64-node
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+                macosx.*:
+                    - macosx64-node
+                    - macosx64-minidump-stackwalk
+                    - macosx64-fix-stacks
+                win.*-64.*:
+                    - win64-node
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                win.*32.*:
+                    - win32-node
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                android-em-7.*:
+                    - android-emulator-linux
+                    - android-system-image-x86_64-linux
+                    - android-avd-x86_64-linux
+                    - linux64-node
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+
+test-coverage-gpu:
+    description: "Per-test coverage for tests that require gpu instances"
+    suite: test-coverage
+    treeherder-symbol: TCg
+    loopback-video: true
+    virtualization: virtual-with-gpu
+    instance-size: default
+    max-run-time: 10800
+    allow-software-gl-layers: false
+    run-on-projects:
+        by-test-platform:
+            # only run on mozilla-central and try.
+            .*-ccov.*/.*: ['mozilla-central']
+            default: []
+    tier:
+        by-test-platform:
+            windows.*asan.*: 3
+            default: 2
+    mozharness:
+        script:
+            by-test-platform:
+                android-em.*: android_emulator_unittest.py
+                default: desktop_unittest.py
+        config:
+            by-test-platform:
+                android-em-7.*:
+                    - android/android_common.py
+                    - android/android-x86_64.py
+                linux.*:
+                    - unittests/linux_unittest.py
+                    - remove_executables.py
+                macosx.*:
+                    - unittests/mac_unittest.py
+                windows.*:
+                    - unittests/win_unittest.py
+        extra-options:
+            - --per-test-coverage
+            - --gpu-required
diff --git a/taskcluster/ci/test/mochitest.yml b/taskcluster/ci/test/mochitest.yml
new file mode 100644
index 0000000000..f2399d7116
--- /dev/null
+++ b/taskcluster/ci/test/mochitest.yml
@@ -0,0 +1,1171 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    suite:
+        category: mochitest
+    target:
+        by-test-platform:
+            android-em-7.*: geckoview-test_runner.apk
+            android-hw.*: geckoview-test_runner.apk
+            windows11-64-2009.*:
+                by-variant:
+                    msix: target.installer.msix
+                    default: null
+            default: null
+    tier:
+        by-variant:
+            xorigin:
+                by-test-platform:
+                    linux.*64.*-qr/debug: 1
+                    default: 2
+            default:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: 3
+                    default: default
+    mozharness:
+        script:
+            by-test-platform:
+                android-em.*: android_emulator_unittest.py
+                android-hw.*: android_hardware_unittest.py
+                default: desktop_unittest.py
+        config:
+            by-test-platform:
+                android-em-7.*:
+                    - android/android_common.py
+                    - android/android-x86_64.py
+                android-hw.*:
+                    - android/android_common.py
+                    - android/android_hw.py
+                linux.*:
+                    - unittests/linux_unittest.py
+                    - remove_executables.py
+                macosx.*:
+                    - unittests/mac_unittest.py
+                windows.*:
+                    - unittests/win_unittest.py
+
+mochitest-plain:
+    description: "Mochitest plain run"
+    treeherder-symbol: M()
+    schedules-component: mochitest-plain
+    loopback-video: true
+    virtualization: virtual
+    variants:
+        - aab+no-fission
+        - conditioned_profile
+        - xorigin
+        - no-fission
+        - socketprocess_networking
+        - webrender-sw+no-fission
+        - webrender-sw
+        - headless
+        - headless+socketprocess_networking
+        - http3
+        - http2
+        - geckoview-fission-isolate-high-value
+    run-on-projects:
+        by-variant:
+            conditioned_profile:
+                by-test-platform:
+                    .*(asan|ccov|wayland).*: []
+                    linux1804-64(-shippable)?-qr/opt: ['trunk']
+                    windows11-64.*(-shippable)?-qr/opt: ['trunk']
+                    default: []
+            xorigin:
+                by-test-platform:
+                    .*(asan|wayland).*: []
+                    windows.*ccov.*: []
+                    (linux.*64|macosx.*64|windows11.*)(-shippable)?-qr/(opt|debug): ['trunk']
+                    windows.*64-ccov-qr/opt: ['mozilla-central']
+                    linux.*64-ccov-qr/opt: ['mozilla-central']
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    android-em.*: ['trunk']
+                    default: []
+            socketprocess_networking:
+                by-test-platform:
+                    .*(asan|ccov|wayland).*: []
+                    (linux.*64|macosx.*64|windows11-64.*)(-shippable)?-qr/(opt|debug): ['autoland', 'mozilla-central']
+                    default: []
+            webrender-sw+no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux.*asan.*: ['trunk']
+                    linux.*64(-shippable)?-qr/(opt|debug): ['trunk']
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    linux1804-64-qr/debug: built-projects
+                    default: []
+            aab+no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    default: []
+            headless:
+                by-test-platform:
+                    .*wayland.*: []
+                    linux1804-64.*: ['mozilla-central']
+                    default: []
+            headless+socketprocess_networking:
+                by-test-platform:
+                    .*wayland.*: []
+                    linux1804-64.*: ['mozilla-central']
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    android.*: built-projects
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            http3:
+                by-test-platform:
+                    linux1804-64-qr/debug: built-projects
+                    default: []
+            http2:
+                by-test-platform:
+                    linux1804-64-qr/debug: built-projects
+                    default: []
+            geckoview-fission-isolate-high-value:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    android-em.*: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    android.*: built-projects
+                    default: built-projects
+    chunks:
+        by-test-platform:
+            android.*/debug: 10
+            linux.*/debug: 16
+            linux.*64-tsan-qr/opt: 20
+            .*(asan|ccov).*: 10
+            linux.*/opt: 8
+            windows.*/debug: 8
+            default: 5
+    instance-size:
+        by-test-platform:
+            linux.*64-tsan-qr/opt: xlarge  # runs out of memory using 8GB
+            default: default
+    max-run-time: 3600
+    allow-software-gl-layers: false
+    mozharness:
+        mochitest-flavor: plain
+        extra-options:
+            by-test-platform:
+                android-em.*:
+                    - --test-suite=mochitest-plain
+                default: []
+        chunked:
+            by-test-platform:
+                android-em.*: false
+                default: true
+    fetches:
+        toolchain:
+            by-test-platform:
+                linux.*:
+                    - linux64-node
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+                macosx.*:
+                    - macosx64-node
+                    - macosx64-minidump-stackwalk
+                    - macosx64-fix-stacks
+                win.*-64.*:
+                    - win64-node
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                win.*32.*:
+                    - win32-node
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                android-em-7.*:
+                    - android-system-image-x86_64-linux
+                    - android-avd-x86_64-linux
+                    - android-emulator-linux
+                    - linux64-node
+                    - linux64-minidump-stackwalk
+
+mochitest-a11y:
+    description: "Mochitest a11y run"
+    treeherder-symbol: M(a11y)
+    schedules-component: mochitest-a11y
+    test-manifest-loader: default  # ensure we don't run with manifest-scheduling
+    loopback-video: true
+    run-without-variant: false
+    variants:
+        - 1proc
+        - socketprocess_networking+1proc
+        - webrender-sw+1proc
+    run-on-projects:
+        by-variant:
+            socketprocess_networking+1proc:
+                by-test-platform:
+                    linux.*64-qr/debug: ['autoland', 'mozilla-central']
+                    default: []
+            webrender-sw+1proc:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux.*64-qr/debug: built-projects
+                    default: []
+            1proc: built-projects
+    mozharness:
+        mochitest-flavor: a11y
+
+mochitest-browser-chrome:
+    description: "Mochitest browser-chrome run"
+    suite:
+        name: mochitest-browser-chrome
+    treeherder-symbol: M(bc)
+    schedules-component: mochitest-browser-chrome
+    loopback-video: true
+    variants:
+        - webrender-sw
+        - webrender-sw+a11y-checks
+        - socketprocess_networking
+        - msix
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    linux.*64(-asan)?-qr/(opt|debug): ['all']
+                    linux.*64-tsan-qr/opt: built-projects
+                    linux.*64-shippable-qr/opt: ['release']
+                    linux.*64(-shippable)?-qr/opt: built-projects
+                    linux.*64-devedition-qr/opt: built-projects
+                    windows1.*-64.*-qr/debug: built-projects
+                    .*wayland.*: []  # will change to built-projects when greened up
+                    default: []
+            webrender-sw+a11y-checks:
+                by-test-platform:
+                    linux.*64(-shippable)?-qr/opt: ['trunk']
+                    default: []
+            socketprocess_networking:
+                by-test-platform:
+                    .*asan.*: []
+                    .*ccov.*: []
+                    (linux.*64|macosx.*64|windows1.*-64.*)(-shippable)?-qr/(opt|debug): ['autoland', 'mozilla-central']
+                    default: []
+            msix:
+                by-test-platform:
+                    windows11-64-2009-qr/debug: built-projects
+                    windows11-64-2009(-shippable)?-qr/opt: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    linux.*: []  # linux runs M-swr(bc), not M(bc)
+                    default: built-projects
+    tier:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    linux.*64(-asan|-shippable)?-qr/(opt|debug): 1
+                    default: default
+            default: default
+    chunks:
+        by-variant:
+            msix:
+                by-test-platform:
+                    .*/debug: 16
+                    default: 7
+            default:
+                by-test-platform:
+                    linux.*wayland.*/opt: 8
+                    linux.*wayland.*/debug: 12
+                    linux.*-qr/debug: 16
+                    linux.*64-asan-qr/opt: 16
+                    linux.*64-tsan-qr/opt: 32
+                    macosx.*64-qr/debug: 12
+                    macosx.*64.*/opt: 10
+                    windows.*-ccov.*/.*: 14
+                    windows.*-asan-qr/opt: 14
+                    windows.*32-qr/debug: 12
+                    default: 8
+    max-run-time:
+        by-variant:
+            msix: 5400
+            socketprocess_networking:
+                by-test-platform:
+                    linux.*-qr/debug: 7200
+                    default: 5400
+            default:
+                by-test-platform:
+                    linux.*64-ccov.*/.*: 9000
+                    linux.*64-tsan-qr/opt: 10800
+                    linux.*-qr/opt: 5400
+                    macosx.*64-ccov.*/.*: 10800
+                    windows.*-ccov.*/.*: 10800
+                    windows.*-asan-qr/opt: 5400
+                    .*/debug: 5400
+                    default: 3600
+    mozharness:
+        mochitest-flavor: browser
+        chunked: true
+    # Bug 1281241: migrating to m3.large instances
+    instance-size:
+        by-test-platform:
+            linux.*64-tsan-qr/opt: xlarge  # runs out of memory using 8GB
+            linux.*64-asan-qr/opt: xlarge  # runs out of memory using 8GB
+            default: default
+    allow-software-gl-layers: false
+
+mochitest-browser-chrome-failures:
+    description: "Mochitest browser-chrome failures run"
+    suite:
+        name: mochitest-browser-chrome
+    treeherder-symbol: M-f(bc)
+    schedules-component: mochitest-browser-chrome
+    loopback-video: true
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-test-platform:
+            android.*: []
+            .*wayland.*: []  # will change to built-projects when greened up
+            default: []
+    tier: 3
+    chunks: 2
+    max-run-time:
+        by-test-platform:
+            linux.*wayland.*/opt: 1800
+            linux.*wayland.*/debug: 3600
+            default: 3600
+    mozharness:
+        mochitest-flavor: browser
+        chunked: true
+        extra-options:
+            by-test-platform:
+                linux.*wayland.*:
+                    - --run-failures="os == 'linux' && os_version == '22.04'"
+                    - --timeout-as-pass
+                    - --crash-as-pass
+    instance-size: default
+    allow-software-gl-layers: false
+
+mochitest-browser-a11y:
+    description: "Mochitest browser-a11y run"
+    suite:
+        name: mochitest-browser-a11y
+    treeherder-symbol: M(ba)
+    schedules-component: mochitest-browser-a11y
+    loopback-video: true
+    run-on-projects:
+        by-test-platform:
+            android.*: []
+            .*wayland.*: []
+            default: built-projects
+    tier: default
+    max-run-time:
+        by-test-platform:
+            .*tsan.*: 2700
+            linux.*/debug: 2700
+            default: 1800
+    mozharness:
+        mochitest-flavor: browser
+        chunked:
+            by-test-platform:
+                .*tsan.*: true
+                default: false
+    chunks:
+        by-test-platform:
+            .*tsan.*: 2
+            .*asan.*: 2
+            default: 1
+    instance-size: default
+    allow-software-gl-layers: false
+    virtualization: virtual
+
+mochitest-browser-media:
+    description: "Mochitest browser media"
+    suite:
+        name: mochitest-browser-media
+    treeherder-symbol: M(mda-bc)
+    schedules-component: mochitest-browser-media
+    loopback-video: true
+    test-manifest-loader: null
+    variants: ["wmf-media-engine"]
+    run-on-projects:
+        by-variant:
+            wmf-media-engine:
+                by-test-platform:
+                    .*asan.*: []
+                    windows11-64.*/debug: []  # Bug 1805736
+                    windows1.*-64.*: ['autoland', 'mozilla-central']
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    default: built-projects
+    tier: default
+    max-run-time:
+        by-test-platform:
+            .*tsan.*: 1800
+            default: 1200
+    mozharness:
+        mochitest-flavor: browser
+    instance-size: default
+    allow-software-gl-layers: false
+    virtualization: virtual
+
+mochitest-browser-screenshots:
+    description: "Browser Screenshots"
+    suite:
+        name: mochitest-browser-screenshots
+    treeherder-symbol: M(ss)
+    loopback-video: true
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    variants: ["no-fission"]
+    run-on-projects:
+        by-test-platform:
+            linux1804-64.*/opt: ['trunk']
+            default: []
+    max-run-time: 3600
+    mozharness:
+        mochitest-flavor: browser
+    allow-software-gl-layers: false
+
+mochitest-chrome:
+    description: "Mochitest chrome run"
+    treeherder-symbol: M(c)
+    schedules-component: mochitest-chrome
+    loopback-video: true
+    run-without-variant: false
+    variants:
+        - 1proc
+        - socketprocess_networking+1proc
+        - webrender-sw+1proc
+    run-on-projects:
+        by-variant:
+            socketprocess_networking+1proc:
+                by-test-platform:
+                    .*asan.*: []
+                    .*ccov.*: []
+                    (linux.*64|macosx.*64|windows11-64.*)(-shippable)?-qr/(opt|debug): ['autoland', 'mozilla-central']
+                    default: []
+            webrender-sw+1proc:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux.*64-qr/debug: built-projects
+                    default: []
+            1proc:
+                by-test-platform:
+                    .*wayland.*: []
+                    default: built-projects
+    chunks:
+        by-test-platform:
+            .*tsan.*/opt: 6
+            default: 3
+    max-run-time: 3600
+    mozharness:
+        mochitest-flavor: chrome
+        chunked: true
+    instance-size:
+        by-test-platform:
+            linux.*64-tsan-qr/opt: xlarge  # runs out of memory otherwise using 8GB
+            default: default
+
+mochitest-devtools-chrome:
+    description: "Mochitest devtools-chrome run"
+    suite:
+        name: mochitest-devtools-chrome
+    schedules-component: mochitest-browser-chrome
+    treeherder-symbol: M(dt)
+    loopback-video: true
+    variants:
+        - a11y-checks
+        - socketprocess_networking
+        - webrender-sw
+        - devtools-no-eft+no-fission
+        - http3
+    run-on-projects:
+        by-variant:
+            a11y-checks:
+                by-test-platform:
+                    linux.*64(-shippable)?-qr/opt: ['trunk']
+                    default: []
+            devtools-no-eft+no-fission:
+                by-test-platform:
+                    linux.*64(-shippable)?-qr/opt: ['trunk']
+                    default: []
+            http3:
+                by-test-platform:
+                    linux1804-64-qr/debug: built-projects
+                    default: []
+            socketprocess_networking:
+                by-test-platform:
+                    .*asan.*: []
+                    .*ccov.*: []
+                    (linux.*64|macosx.*64|windows.*)(-shippable)?-qr/(opt|debug): ['autoland', 'mozilla-central']
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    linux.*64-qr/debug: built-projects
+                    .*wayland.*: []  # will change to built-projects when greened up
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*wayland.*: []
+                    linux.*64-ccov-qr/opt: []
+                    default: built-projects
+    tier: default
+    max-run-time:
+        by-test-platform:
+            windows.*-ccov.*/.*: 10800
+            macosx.*64-ccov.*/.*: 9000
+            linux.*64-ccov.*/.*: 7200
+            linux.*64-tsan-qr/opt: 7200
+            default: 5400
+    chunks:
+        by-test-platform:
+            .*-ccov.*/.*: 12
+            linux.*wayland.*/debug: 14
+            linux.*64-qr/debug: 14
+            macosx.*64-qr/debug: 8
+            .*-asan(-qr)?/opt: 8
+            .*-tsan-qr/opt: 16
+            default: 5
+    mozharness:
+        mochitest-flavor: chrome
+        chunked: true
+    instance-size:
+        by-test-platform:
+            linux.*64-[at]san(-qr)?/opt: xlarge  # runs out of memory otherwise using 8GB
+            default: default
+    # Bug 1296086: high number of intermittents observed with software GL and large instances
+    allow-software-gl-layers: false
+    fetches:
+        toolchain:
+            by-test-platform:
+                linux.*:
+                    - linux64-node
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+                macosx.*:
+                    - macosx64-node
+                    - macosx64-minidump-stackwalk
+                    - macosx64-fix-stacks
+                win.*-64.*:
+                    - win64-node
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                win.*32.*:
+                    - win32-node
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                android-em-7.*:
+                    - android-system-image-x86_64-linux
+                    - android-avd-x86_64-linux
+                    - android-emulator-linux
+                    - linux64-node
+                    - linux64-minidump-stackwalk
+
+
+mochitest-devtools-chrome-failures:
+    description: "Mochitest devtools-chrome run"
+    suite:
+        name: mochitest-devtools-chrome
+    schedules-component: mochitest-browser-chrome
+    treeherder-symbol: M-f(dt)
+    loopback-video: true
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-test-platform:
+            android.*: []
+            .*wayland.*: []  # will change to built-projects when greened up
+            default: []
+    tier: 3
+    chunks: 2
+    max-run-time:
+        by-test-platform:
+            linux.*wayland.*/opt: 1800
+            linux.*wayland.*/debug: 3600
+            default: 3600
+    mozharness:
+        mochitest-flavor: chrome
+        chunked: true
+        extra-options:
+            by-test-platform:
+                linux.*wayland.*:
+                    - --run-failures="os == 'linux' && os_version == '22.04'"
+                    - --timeout-as-pass
+                    - --crash-as-pass
+    instance-size: default
+    allow-software-gl-layers: false
+
+
+mochitest-plain-gpu:
+    description: "Mochitest plain GPU run"
+    suite:
+        name: mochitest-plain-gpu
+    treeherder-symbol: M(gpu)
+    schedules-component: mochitest-plain
+    loopback-video: true
+    variants:
+        - no-fission
+        - webrender-sw+no-fission
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw+no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux.*asan.*: ['trunk']
+                    linux.*64(-shippable)?-qr/(opt|debug): ['trunk']
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    linux.*64-qr/debug: built-projects
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    linux.*64-ccov-qr/opt: []
+                    linux1804-32.*: []
+                    .*-tsan-qr/opt: []
+                    .*wayland.*: []
+                    linux.*: ['trunk']  # linux opt/debug/asan
+                    android.*: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    default: built-projects
+    virtualization: virtual-with-gpu
+    tier:
+        by-test-platform:
+            android-em-7.0-x86_64-qr/debug-isolated-process: 3
+            default: default
+    mozharness:
+        mochitest-flavor: plain
+        extra-options:
+            by-test-platform:
+                android.*:
+                    # note that Android runs fewer suites than other platforms
+                    - --test-suite=mochitest-plain-gpu
+                default:
+                    - --mochitest-suite=mochitest-plain-gpu
+    instance-size:
+        by-test-platform:
+            linux.*64-tsan-qr/opt: xlarge  # runs out of memory otherwise using 8GB
+            default: default
+
+mochitest-chrome-gpu:
+    description: "Mochitest chrome GPU run"
+    suite:
+        name: mochitest-chrome-gpu
+    treeherder-symbol: M(gpu-c)
+    loopback-video: true
+    virtualization: virtual-with-gpu
+    run-without-variant: false
+    variants:
+        - 1proc
+        - socketprocess_networking+1proc
+        - webrender-sw+1proc
+    run-on-projects:
+        by-variant:
+            socketprocess_networking+1proc: []
+            webrender-sw+1proc:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux.*64-qr/debug: built-projects
+                    default: []
+            1proc:
+                by-test-platform:
+                    android.*/.*: []
+                    default: built-projects
+    tier: default
+    mozharness:
+        mochitest-flavor: chrome
+        extra-options:
+            by-test-platform:
+                android.*:
+                    # note that Android runs fewer suites than other platforms
+                    - --test-suite=mochitest-chrome-gpu
+                default:
+                    - --mochitest-suite=mochitest-chrome-gpu
+    instance-size:
+        by-test-platform:
+            linux.*64-tsan-qr/opt: xlarge  # runs out of memory using 8GB of memory
+            default: default
+
+mochitest-media:
+    description: "Mochitest media run"
+    treeherder-symbol: M(mda)
+    schedules-component: mochitest-plain
+    max-run-time:
+        by-test-platform:
+            windows.*-ccov.*/.*: 7200
+            macosx.*64-ccov.*/.*: 7200
+            linux.*64-tsan-qr/opt: 7200
+            default: 5400
+    variants:
+        - media-gpu
+        - no-fission
+        - socketprocess+no-fission
+        - socketprocess
+        - webgl-ipc
+        - webrender-sw+no-fission
+        - webrender-sw
+        - wmf-media-engine
+        - msix
+    run-on-projects:
+        by-variant:
+            webgl-ipc:
+                by-test-platform:
+                    android.*: []
+                    windows.*ccov.*: []
+                    .*hw-ref.*: []
+                    linux.*64(-shippable|-asan|-tsan)?-qr/opt: ['autoland', 'mozilla-central']
+                    macosx.*-64(-shippable)?-qr/(opt|debug): ['autoland', 'mozilla-central']
+                    windows1.*(-shippable)?-qr/(opt|debug): ['autoland', 'mozilla-central']
+                    windows.*-asan-qr/opt: ['autoland', 'mozilla-central']
+                    default: []
+            socketprocess+no-fission:
+                by-test-platform:
+                    .*hw-ref.*: []
+                    android-em-7.0-x86_64-qr/debug: ['autoland', 'mozilla-central']
+                    android-hw-.*-aarch64-qr/debug: built-projects
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            socketprocess:
+                by-test-platform:
+                    android.*: []
+                    windows.*ccov.*: []
+                    .*hw-ref.*: []
+                    linux.*64(-asan|-devedition|-shippable)?-qr/(opt|debug): built-projects
+                    linux.*64-tsan-qr/opt: ['autoland', 'mozilla-central']
+                    macosx.*-64(-devedition|-shippable)?-qr/(opt|debug): built-projects
+                    windows1.*(-devedition|-shippable)?-qr/(opt|debug): built-projects
+                    windows.*-asan-qr/opt: ['autoland', 'mozilla-central']
+                    default: []
+            webrender-sw+no-fission:
+                by-test-platform:
+                    .*hw-ref.*: []
+                    android-em-7.0-x86_64-qr/debug: ['autoland', 'mozilla-central']
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    android.*: []
+                    .*hw-ref.*: []
+                    linux1804-64-qr/debug: ['autoland', 'mozilla-central']
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-hw-.*/opt: []
+                    .*hw-ref.*: []
+                    android-hw-.*-arm7.*/(?:debug)?: ['trunk', 'mozilla-beta', 'mozilla-release']
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    android.*: built-projects
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            wmf-media-engine:
+                by-test-platform:
+                    .*hw-ref.*: []
+                    windows1.*ccov.*: []
+                    windows1.*-64.*: ['autoland', 'mozilla-central']
+                    default: []
+            msix:
+                by-test-platform:
+                    .*hw-ref.*: []
+                    windows11-64-2009-shippable-qr/opt: built-projects
+                    windows11-64-2009-qr/opt: ['autoland']
+                    windows11-64-2009-qr/debug: ['autoland']
+                    default: []
+            media-gpu:
+                by-test-platform:
+                    .*hw-ref.*: []
+                    (macosx.*64|windows11.*)(-shippable)?-qr/(opt|debug): ['autoland', 'mozilla-central', 'mozilla-beta']
+                    default: []
+                    # TODO : add Android, it hasn't supported 'tags'
+                    # TODO : add Linux, it would crash on gfxFeature.cpp:180
+            default:
+                by-test-platform:
+                    .*hw-ref.*: []
+                    android-hw.*/opt: []
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    android.*: built-projects
+                    linux.*(asan|ccov)/opt: []
+                    .*(ccov/|asan/|-32).*: built-projects
+                    (android|linux|windows10-64-2009|windows11-64-2009|macos)(?!.*-qr).*: []
+                    default: built-projects
+    loopback-video: true
+    chunks:
+        by-variant:
+            wmf-media-engine: 1
+            media-gpu: 1
+            default:
+                by-test-platform:
+                    (android|macos).*/opt: 1
+                    ^(?!.*asan).*windows1.*/opt: 1
+                    linux.*/debug: 3
+                    linux.*64-tsan-qr/opt: 5
+                    default: 2
+    mozharness:
+        mochitest-flavor: plain
+        chunked:
+            by-test-platform:
+                android.*: false
+                macosx.*64.*: false
+                windows1.*: false
+                default: true
+        extra-options:
+            by-test-platform:
+                android-em-7.*:
+                    - --setpref=webgl.out-of-process=false
+                    - --setpref=security.sandbox.content.headless=false
+                    - --setpref=gfx.canvas.accelerated=false
+                default:
+                    - --setpref=webgl.out-of-process=false
+                    - --setpref=security.sandbox.content.headless=false
+    tier:
+        by-test-platform:
+            .*ccov.*: 2
+            android-em.*: 1
+            android-em-7.0-x86_64-qr/debug-isolated-process: 3
+            android-hw.*: 1
+            default: default
+
+mochitest-valgrind:
+    description: "Mochitest plain Valgrind run"
+    suite:
+        name: mochitest-valgrind-plain
+    treeherder-symbol: M-V()
+    run-on-projects: []
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    tier: 3
+    loopback-video: true
+    chunks: 40
+    max-run-time: 14400
+    run-without-variant: false
+    variants: ["1proc"]
+    allow-software-gl-layers: false
+    mozharness:
+        mochitest-flavor: plain
+        chunked: true
+
+mochitest-webgl1-core:
+    description: "Mochitest webgl1-core run"
+    treeherder-symbol: M(gl1c)
+    schedules-component: mochitest-plain
+    virtualization: virtual-with-gpu
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    loopback-video: true
+    max-run-time:
+        by-test-platform:
+            macosx.*64-ccov.*/.*: 7200
+            default: 1800
+    variants:
+        - no-fission
+        - webgl-ipc
+        - webrender-sw+no-fission
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webgl-ipc:
+                by-test-platform:
+                    .*-(ccov|tsan|wayland).*: []
+                    linux.*-64.*: ["trunk"]
+                    mac.*: ["trunk"]
+                    win.*: ["trunk"]
+                    default: []
+            webrender-sw+no-fission:
+                by-test-platform:
+                    linux.*64-qr/debug: ['trunk']
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    linux.*64-qr/debug: built-projects
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-hw-.*(?<!-shippable)(-qr)?/opt: ['mozilla-central', 'mozilla-beta', 'mozilla-release']
+                    android-hw.*aarch.*-shippable-qr/opt: ['mozilla-central']
+                    android-hw.*aarch.*-qr/debug: ['mozilla-central']
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*-tsan.*: []
+                    default: built-projects
+    # Bug 1296733: llvmpipe with mesa 9.2.1 lacks thread safety
+    allow-software-gl-layers: false
+    mozharness:
+        mochitest-flavor: plain
+        extra-options:
+            - --setpref=webgl.out-of-process=false
+            - --setpref=security.sandbox.content.headless=false
+
+mochitest-webgl1-ext:
+    description: "Mochitest webgl1-ext run"
+    treeherder-symbol: M(gl1e)
+    schedules-component: mochitest-plain
+    virtualization: virtual-with-gpu
+    chunks:
+        by-test-platform:
+            android.*: 2
+            default: 1
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    loopback-video: true
+    max-run-time: 2700
+    variants:
+        - no-fission
+        - webgl-ipc
+        - webrender-sw+no-fission
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webgl-ipc:
+                by-test-platform:
+                    .*-(ccov|tsan|wayland).*/.*: []
+                    linux.*-64.*: ["trunk"]
+                    mac.*: ["trunk"]
+                    win.*: ["trunk"]
+                    default: []
+            webrender-sw+no-fission:
+                by-test-platform:
+                    linux.*64-qr/debug: ['trunk']
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    linux.*64-qr/debug: built-projects
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-hw-.*(?<!-shippable)(-qr)?/opt: ['mozilla-central', 'mozilla-beta', 'mozilla-release']
+                    android-hw.*aarch.*-shippable-qr/opt: ['mozilla-central']
+                    android-hw.*aarch.*-qr/debug: ['mozilla-central']
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*-tsan.*: []
+                    default: built-projects
+    # Bug 1296733: llvmpipe with mesa 9.2.1 lacks thread safety
+    allow-software-gl-layers: false
+    mozharness:
+        mochitest-flavor: plain
+        chunked: true
+        extra-options:
+            - --setpref=webgl.out-of-process=false
+            - --setpref=security.sandbox.content.headless=false
+
+mochitest-webgl2-core:
+    description: "Mochitest webgl2-core run"
+    treeherder-symbol: M(gl2c)
+    schedules-component: mochitest-plain
+    virtualization: virtual-with-gpu
+    chunks:
+        by-test-platform:
+            android.*: 2
+            default: 1
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    loopback-video: true
+    max-run-time: 1800
+    variants:
+        - no-fission
+        - webgl-ipc
+        - webrender-sw+no-fission
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webgl-ipc:
+                by-test-platform:
+                    .*-(ccov|tsan|wayland).*/.*: []
+                    android.*: []
+                    linux.*-64.*: ["trunk"]
+                    mac.*: ["trunk"]
+                    win.*: ["trunk"]
+                    default: []
+            webrender-sw+no-fission:
+                by-test-platform:
+                    linux.*64-qr/debug: ['trunk']
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    linux.*64-qr/debug: built-projects
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-hw-.*(?<!-shippable)(-qr)?/opt: ['mozilla-central', 'mozilla-beta', 'mozilla-release']
+                    android-hw.*aarch.*-shippable-qr/opt: ['mozilla-central']
+                    android-hw.*aarch.*-qr/debug: ['mozilla-central']
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*-(tsan|wayland).*: []
+                    default: built-projects
+    # Bug 1296733: llvmpipe with mesa 9.2.1 lacks thread safety
+    allow-software-gl-layers: false
+    mozharness:
+        mochitest-flavor: plain
+        chunked: true
+
+mochitest-webgl2-ext:
+    description: "Mochitest webgl2-ext run"
+    treeherder-symbol: M(gl2e)
+    schedules-component: mochitest-plain
+    virtualization: virtual-with-gpu
+    variants:
+        - no-fission
+        - webgl-ipc
+        - webrender-sw+no-fission
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webgl-ipc:
+                by-test-platform:
+                    .*(ccov|tsan|wayland).*/.*: []
+                    linux.*-64.*: ["trunk"]
+                    mac.*: ["trunk"]
+                    win.*: ["trunk"]
+                    default: []
+            webrender-sw+no-fission:
+                by-test-platform:
+                    linux.*64-qr/debug: ["trunk"]
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    linux.*64-qr/debug: built-projects
+                    default: []
+            no-fission:
+                by-test-platform:
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    android.*: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*-tsan.*: []
+                    default: built-projects
+    chunks: 4
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    loopback-video: true
+    max-run-time: 2700
+    # Bug 1296733: llvmpipe with mesa 9.2.1 lacks thread safety
+    allow-software-gl-layers: false
+    mozharness:
+        mochitest-flavor: plain
+        chunked: true
+        extra-options:
+            - --setpref=webgl.out-of-process=false
+            - --setpref=security.sandbox.content.headless=false
+
+mochitest-webgl2-deqp:
+    description: "Mochitest webgl2-deqp run"
+    treeherder-symbol: M(gl2d)
+    schedules-component: mochitest-plain
+    virtualization: virtual-with-gpu
+    variants:
+        - webgl-ipc
+        - webrender-sw
+    run-on-projects: []  # Don't run this for now.
+    chunks: 4
+    loopback-video: true
+    max-run-time: 1800
+    # Bug 1296733: llvmpipe with mesa 9.2.1 lacks thread safety
+    allow-software-gl-layers: false
+    mozharness:
+        mochitest-flavor: plain
+        chunked: true
+        extra-options:
+            - --setpref=webgl.out-of-process=false
+            - --setpref=security.sandbox.content.headless=false
+
+mochitest-webgpu:
+    description: "Mochitest webgpu run"
+    treeherder-symbol: M(webgpu)
+    schedules-component: mochitest-plain
+    virtualization: virtual-with-gpu
+    loopback-video: true
+    variants:
+        - no-fission
+        - webrender-sw+no-fission
+    run-on-projects:
+        by-variant:
+            webrender-sw+no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: ["trunk"]
+                    default: []
+            no-fission:
+                by-test-platform:
+                    linux2204-64-qr/debug: ['trunk']
+                    linux2204-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    macosx.*: []
+                    # Things like asan/tsan/32bit are restricted to --full
+                    # via UNCOMMON_TRY_TASK_LABELS
+                    # in taskcluster/gecko_taskgraph/target_tasks.py.
+                    default: ['trunk']
+    max-run-time:
+        by-test-platform:
+            macosx.*64-ccov.*/.*: 7200
+            default: 1800
+    # Bug 1296733: llvmpipe with mesa 9.2.1 lacks thread safety
+    allow-software-gl-layers: false
+    mozharness:
+        mochitest-flavor: plain
+
+mochitest-remote:
+    description: "Mochitest for the remote agent (/remote folder)"
+    suite:
+        name: mochitest-remote
+    treeherder-symbol: M(remote)
+    loopback-video: true
+    variants:
+        - no-fission
+        - socketprocess_networking
+        - webrender-sw+no-fission
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            socketprocess_networking:
+                by-test-platform:
+                    .*asan.*: []
+                    .*ccov.*: []
+                    (linux.*64|macosx.*64|windows1.*-64.*)(-shippable)?-qr/(opt|debug): ['autoland', 'mozilla-central']
+                    default: []
+            webrender-sw+no-fission:
+                by-test-platform:
+                    linux.*64-qr/debug: ['trunk']
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    linux.*64-qr/debug: ['all']
+                    default: []
+            no-fission:
+                by-test-platform:
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    default: built-projects
+    tier: default
+    max-run-time: 5400
+    mozharness:
+        mochitest-flavor: browser
+        extra-options:
+            - --setpref=remote.log.level=Trace
+    virtualization: virtual
diff --git a/taskcluster/ci/test/reftest.yml b/taskcluster/ci/test/reftest.yml
new file mode 100644
index 0000000000..5e19ec3fd5
--- /dev/null
+++ b/taskcluster/ci/test/reftest.yml
@@ -0,0 +1,248 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    suite:
+        category: reftest
+    target:
+        by-test-platform:
+            android-em-7.*: geckoview-test_runner.apk
+            android-hw-.*: geckoview-test_runner.apk
+            default: null
+    tier: default
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    mozharness:
+        script:
+            by-test-platform:
+                android-em.*: android_emulator_unittest.py
+                android-hw.*: android_hardware_unittest.py
+                default: desktop_unittest.py
+        config:
+            by-test-platform:
+                android-em-7.*:
+                    - android/android_common.py
+                    - android/android-x86_64.py
+                android-hw.*:
+                    - android/android_common.py
+                    - android/android_hw.py
+                linux.*:
+                    - unittests/linux_unittest.py
+                    - remove_executables.py
+                macosx.*:
+                    - unittests/mac_unittest.py
+                windows.*:
+                    - unittests/win_unittest.py
+
+crashtest:
+    description: "Crashtest run"
+    schedules-component: crashtest
+    treeherder-symbol: R(C)
+    chunks:
+        by-test-platform:
+            android-em-7.*: 1
+            linux.*64-tsan-qr/opt: 32
+            default: 1
+    variants:
+        - no-fission
+        - webrender-sw+no-fission
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw+no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    macosx101.*64-qr/debug: built-projects
+                    linux.*-64-qr/debug: built-projects
+                    linux.*-64(-tsan|-asan)-qr/opt: built-projects
+                    windows.*-asan-qr/opt: built-projects
+                    windows1.*-64.*-qr/debug: built-projects
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    android.*: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*wayland/debug.*: []
+                    default: built-projects
+    max-run-time: 3600
+    tier:
+        by-test-platform:
+            android-hw-.*-qr/.*: 2
+            android-em-7.0-x86_64-qr/debug-isolated-process: 3
+            default: default
+
+crashtest-qr:
+    description: "Crashtest Webrender run"
+    schedules-component: crashtest
+    treeherder-symbol: R(C)
+    chunks: 1
+    variants:
+        - no-fission
+    run-on-projects:
+        by-variant:
+            no-fission: built-projects
+            default: []
+    max-run-time: 1200
+    tier: 2
+    virtualization: virtual
+
+jsreftest:
+    description: "JS Reftest run"
+    schedules-component: jsreftest
+    treeherder-symbol: R(J)
+    instance-size: default
+    chunks:
+        by-test-platform:
+            android-hw.*\/debug: 12
+            android-hw.*/(opt|pgo)?: 6
+            windows.*-asan-qr/opt: 3
+            windows.*-ccov-qr/opt: 5
+            windows.*\/opt: 2
+            linux.*64-ccov.*/.*: 5
+            linux1804-64-qr/opt: 4
+            linux.*/debug: 5
+            .*-tsan-qr/opt: 8
+            macosx.*-64-ccov.*/.*: 5
+            macosx.*-64(-shippable)?/opt: 2
+            default: 3
+    max-run-time:
+        by-test-platform:
+            .*ccov.*: 7200
+            .*-wayland/debug.*: 5400
+            default: 3600
+    variants:
+        - no-fission
+    run-on-projects:
+        by-variant:
+            no-fission:
+                by-test-platform:
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    android-hw-.*-aarch64(?:-shippable)?-qr/.*: ['mozilla-central', 'release']
+                    android-hw-.*-arm7(?:-shippable)?-qr/.*: ['mozilla-central', 'release']
+                    android.*: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    android.*/.*: []
+                    default: built-projects
+    virtualization: virtual
+
+reftest:
+    description: "Reftest run"
+    treeherder-symbol: R(R)
+    virtualization: virtual-with-gpu
+    chunks:
+        by-test-platform:
+            android-em-7.*: 6
+            linux1804-64(-shippable|-devedition|-qr)?/opt: 5
+            linux.*64-tsan-qr/opt: 32
+            macosx101.*-64-shippable(-qr)?/opt: 3
+            macosx101.*-64/debug: 4
+            macosx101.*-64(-ccov.*|-qr)/debug: 6
+            windows.*64.*/debug: 4
+            windows.*32.*/debug: 6
+            windows.*-ccov-qr/opt: 9
+            windows10.*asan.*: 3
+            windows10.*/opt: 2
+            windows11.*/opt: 3
+            default: 8
+    variants:
+        - no-fission
+        - webrender-dcomp-disabled
+        - webrender-dcomp-present
+        - webrender-dcomp-overlays
+        - webrender-dcomp-compositing  # Should match default
+        - webrender-sw+no-fission
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw+no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    linux1804-64-qr/debug: built-projects
+                    linux1804-64(-asan|-tsan)-qr/opt: built-projects
+                    macosx101.*64-qr/debug: built-projects
+                    windows.*-asan-qr/opt: built-projects
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    android.*: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    android.*/.*: []
+                    .*wayland.*: []
+                    linux.*asan/opt: []
+                    default: built-projects
+    max-run-time:
+        by-test-platform:
+            windows.*-32-mingwclang-qr/debug: 5400
+            windows.*-ccov.*/.*: 5400
+            windows.*-asan-qr/opt: 5400
+            macosx.*64-ccov.*/.*: 5400
+            default: 3600
+    mozharness:
+        chunked:
+            by-test-platform:
+                android-em.*: false
+                macosx.*64/opt: false
+                windows.*/opt: false
+                default: true
+    tier:
+        by-test-platform:
+            android-em-7.0-x86_64-qr/debug-isolated-process: 3
+            default: default
+
+reftest-qr:
+    description: "Reftest webrender run"
+    treeherder-symbol: R(R)
+    chunks: 2
+    variants:
+        - no-fission
+        - webrender-sw+no-fission
+    run-without-variant: false
+    run-on-projects:
+        by-variant:
+            webrender-sw+no-fission:
+                by-test-platform:
+                    android-hw-p5-13-0-android-aarch64-qr/debug: built-projects
+                    default: []
+            no-fission: built-projects
+    max-run-time: 2400
+    mozharness:
+        chunked: true
+    tier: 2
+    virtualization: virtual
+
+reftest-snapshot:
+    description: "Reftest snapshot"
+    treeherder-symbol: R(Rs)
+    virtualization: virtual
+    run-on-projects:
+        by-test-platform:
+            linux1804-64-qr/debug: ['trunk']
+            default: []
+    tier: default
+    chunks: 8
+    mozharness:
+        chunked: true
diff --git a/taskcluster/ci/test/talos.yml b/taskcluster/ci/test/talos.yml
new file mode 100644
index 0000000000..f622eef18e
--- /dev/null
+++ b/taskcluster/ci/test/talos.yml
@@ -0,0 +1,777 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    max-run-time: 3600
+    suite: talos
+    tier:
+        by-test-platform:
+            macosx1100.*: 2
+            default: default
+    virtualization: hardware
+    mozharness:
+        script: talos_script.py
+        config:
+            by-test-platform:
+                macosx.*:
+                    - talos/mac_config.py
+                windows.*:
+                    - talos/windows_config.py
+                default:
+                    - talos/linux_config.py
+    test-manifest-loader: null  # don't load tests in the taskgraph
+
+talos-bcv:
+    description: Talos basic compositor video
+    try-name: bcv
+    treeherder-symbol: T(bcv)
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|macosx1015|windows10)-64-shippable-qr/opt: [trunk]
+                    (windows10-64|macosx1015-64).*-qr.*: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32.*: []
+                    default: [trunk]
+    max-run-time: 1800
+    mozharness:
+        extra-options:
+            - --suite=bcv
+
+talos-bcv-profiling:
+    description: Talos basic compositor video with gecko profiling
+    try-name: bcv-prof
+    treeherder-symbol: T-Prof(bcv)
+    tier: 2
+    run-on-projects: []
+    max-run-time: 1800
+    mozharness:
+        extra-options:
+            - --suite=bcv
+            - --gecko-profile
+
+talos-chrome:
+    description: Talos chrome
+    try-name: chromez
+    treeherder-symbol: T(c)
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-test-platform:
+            windows.*-32.*: []
+            (linux|windows10-64|macos)(?!.*shippable).*: []
+            (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+            default: [trunk]
+    max-run-time: 1800
+    mozharness:
+        extra-options:
+            - --suite=chromez
+
+talos-chrome-profiling:
+    description: Talos chrome with gecko profiling
+    try-name: chromez-prof
+    treeherder-symbol: T-Prof(c)
+    tier: 2
+    max-run-time: 1200
+    run-on-projects: []
+    mozharness:
+        extra-options:
+            - --suite=chromez
+            - --gecko-profile
+
+talos-damp-inspector:
+    description: Talos devtools inspector (damp-inspector)
+    try-name: damp-inspector
+    treeherder-symbol: T(damp-inspector)
+    max-run-time: 5400
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx1015)-64-shippable-qr.*: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32-shippable.*/.*: []
+                    (linux|windows|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macos)(?!.*-qr).*: []
+                    default: [trunk]
+    mozharness:
+        extra-options:
+            - --suite=damp-inspector
+
+talos-damp-webconsole:
+    description: Talos devtools webconsole (damp-webconsole)
+    try-name: damp-webconsole
+    treeherder-symbol: T(damp-webconsole)
+    max-run-time: 5400
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx1015)-64-shippable-qr.*: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32-shippable.*/.*: []
+                    (linux|windows|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macos)(?!.*-qr).*: []
+                    default: [trunk]
+    mozharness:
+        extra-options:
+            - --suite=damp-webconsole
+
+talos-damp-other:
+    description: Talos devtools other (damp-other)
+    try-name: damp-other
+    treeherder-symbol: T(damp-other)
+    max-run-time: 5400
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx1015)-64-shippable-qr.*: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32-shippable.*/.*: []
+                    (linux|windows|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macos)(?!.*-qr).*: []
+                    default: [trunk]
+    mozharness:
+        extra-options:
+            - --suite=damp-other
+
+talos-damp-inspector-profiling:
+    description: Talos devtools inspector (damp-inspector) with gecko profiling
+    try-name: damp-inspector-prof
+    treeherder-symbol: T-Prof(damp-inspector)
+    tier: 2
+    max-run-time: 5400
+    run-on-projects: []
+    mozharness:
+        extra-options:
+            - --suite=damp-inspector
+            - --gecko-profile
+
+talos-damp-webconsole-profiling:
+    description: Talos devtools webconsole (damp-webconsole) with gecko profiling
+    try-name: damp-webconsole-prof
+    treeherder-symbol: T-Prof(damp-webconsole)
+    tier: 2
+    max-run-time: 5400
+    run-on-projects: []
+    mozharness:
+        extra-options:
+            - --suite=damp-webconsole
+            - --gecko-profile
+
+talos-damp-other-profiling:
+    description: Talos devtools other (damp-other) with gecko profiling
+    try-name: damp-other-prof
+    treeherder-symbol: T-Prof(damp-other)
+    tier: 2
+    max-run-time: 5400
+    run-on-projects: []
+    mozharness:
+        extra-options:
+            - --suite=damp-other
+            - --gecko-profile
+
+talos-dromaeojs:
+    description: Talos dromaeojs
+    try-name: dromaeojs
+    treeherder-symbol: T(d)
+    max-run-time: 2100
+    run-on-projects:
+        by-test-platform:
+            windows.*-32.*: []
+            (linux|windows10-64|macos)(?!.*shippable).*: []
+            (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+            default: [trunk]
+    mozharness:
+        extra-options:
+            - --suite=dromaeojs
+
+talos-dromaeojs-profiling:
+    description: Talos dromaeojs with gecko profiling
+    try-name: dromaeojs-prof
+    treeherder-symbol: T-Prof(d)
+    tier: 2
+    max-run-time: 2100
+    run-on-projects: []
+    mozharness:
+        extra-options:
+            - --suite=dromaeojs
+            - --gecko-profile
+
+talos-g1:
+    description: Talos g1
+    try-name: g1
+    treeherder-symbol: T(g1)
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx.*)-64-shippable-qr.*: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32.*: []
+                    (linux|windows10-64|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+                    default: [trunk]
+    max-run-time:
+        by-test-platform:
+            linux1804-64.*: 3600
+            default: 7200
+    mozharness:
+        extra-options:
+            - --suite=g1
+
+talos-g1-profiling:
+    description: Talos g1 with gecko profiling
+    try-name: g1-prof
+    treeherder-symbol: T-Prof(g1)
+    tier: 2
+    run-on-projects: []
+    max-run-time:
+        by-test-platform:
+            linux1804-64.*: 3600
+            default: 7200
+    mozharness:
+        extra-options:
+            - --suite=g1
+            - --gecko-profile
+
+talos-g3:
+    description: Talos g3
+    try-name: g3
+    treeherder-symbol: T(g3)
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx.*)-64-shippable-qr.*: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32.*: []
+                    (linux|windows10-64|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+                    default: [trunk]
+    max-run-time: 900
+    mozharness:
+        extra-options:
+            - --suite=g3
+
+talos-g3-profiling:
+    description: Talos g3 with gecko profiling
+    try-name: g3-prof
+    treeherder-symbol: T-Prof(g3)
+    tier: 2
+    max-run-time: 900
+    run-on-projects: []
+    mozharness:
+        extra-options:
+            - --suite=g3
+            - --gecko-profile
+
+talos-g4:
+    description: Talos g4
+    try-name: g4
+    treeherder-symbol: T(g4)
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx1015)-64-shippable-qr/opt: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32.*: []
+                    (linux|windows10-64|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macos)(?!.*-qr).*: []
+                    default: [trunk]
+    max-run-time:
+        by-test-platform:
+            linux1804-64.*: 1500
+            default: 1800
+    mozharness:
+        extra-options:
+            - --suite=g4
+
+talos-g4-profiling:
+    description: Talos g4 with gecko profiling
+    try-name: g4-prof
+    treeherder-symbol: T-Prof(g4)
+    tier: 2
+    max-run-time:
+        by-test-platform:
+            linux1804-64.*: 1500
+            default: 1800
+    run-on-projects: []
+    mozharness:
+        extra-options:
+            - --suite=g4
+            - --gecko-profile
+
+talos-g5:
+    description: Talos g5
+    try-name: g5
+    treeherder-symbol: T(g5)
+    mozharness:
+        extra-options:
+            - --suite=g5
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx.*)-64-shippable-qr.*: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32.*: []
+                    (linux|windows10-64|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+                    default: [trunk]
+    max-run-time:
+        by-test-platform:
+            linux1804-64.*: 1200
+            macosx.*: 2400
+            default: 1800
+
+talos-g5-profiling:
+    description: Talos g5 with gecko profiling
+    try-name: g5-prof
+    treeherder-symbol: T-Prof(g5)
+    tier: 2
+    run-on-projects: []
+    mozharness:
+        extra-options:
+            - --suite=g5
+            - --gecko-profile
+    max-run-time:
+        by-test-platform:
+            linux1804-64.*: 1200
+            default: 1800
+
+talos-h1:
+    description: Talos h1
+    try-name: h1
+    treeherder-symbol: T(h1)
+    run-on-projects:
+        by-test-platform:
+            windows.*-32.*: []
+            (linux|windows10-64|macos)(?!.*shippable).*: []
+            (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+            default: [trunk]
+    mozharness:
+        extra-options:
+            - --suite=h1
+    max-run-time:
+        by-test-platform:
+            linux1804-64.*: 900
+            default: 1800
+
+talos-h2:
+    description: Talos h2
+    try-name: h2
+    treeherder-symbol: T(h2)
+    run-on-projects:
+        by-test-platform:
+            windows.*-32.*: []
+            (linux|windows10-64|macos)(?!.*shippable).*: []
+            (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+            default: [trunk]
+    max-run-time:
+        by-test-platform:
+            linux1804-64.*: 900
+            default: 7200
+    mozharness:
+        extra-options:
+            - --suite=h2
+
+talos-motionmark:
+    description: Talos motionmark
+    try-name: motionmark
+    treeherder-symbol: T(mm)
+    run-on-projects:
+        by-test-platform:
+            (linux|windows10-64|macos)(?!.*shippable).*: []
+            (linux|windows10-64|macos)(?!.*-qr).*: []
+            default: [mozilla-central]
+    max-run-time: 3600
+    tier: 2
+    mozharness:
+        extra-options:
+            - --suite=motionmark
+
+talos-motionmark-profiling:
+    description: Talos motionmark with gecko profiling
+    try-name: motionmark-prof
+    treeherder-symbol: T-Prof(mm)
+    run-on-projects: []
+    max-run-time: 3600
+    tier: 2
+    mozharness:
+        extra-options:
+            - --suite=motionmark
+            - --gecko-profile
+
+talos-other:
+    description: Talos other
+    try-name: other
+    treeherder-symbol: T(o)
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx.*)-64-shippable-qr.*: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32.*: []
+                    (linux|windows10-64|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+                    default: [trunk]
+    max-run-time: 1500
+    mozharness:
+        extra-options:
+            - --suite=other
+
+talos-other-profiling:
+    description: Talos other with gecko profiling
+    try-name: other-prof
+    treeherder-symbol: T-Prof(o)
+    run-on-projects: []
+    tier: 2
+    max-run-time: 1500
+    mozharness:
+        extra-options:
+            - --suite=other
+            - --gecko-profile
+
+talos-sessionrestore-many-windows:
+    description: Talos sessionrestore-many-windows
+    try-name: sessionrestore-many-windows
+    treeherder-symbol: T(smw)
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx.*)-64-shippable-qr.*: [mozilla-central, autoland]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32.*: []
+                    (linux|windows10-64|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+                    default: [mozilla-central, autoland]
+    max-run-time: 1500
+    mozharness:
+        extra-options:
+            - --suite=sessionrestore-many-windows
+
+talos-sessionrestore-many-windows-profiling:
+    description: Talos sessionrestore-many-windows with gecko profiling
+    try-name: sessionrestore-many-windows-prof
+    treeherder-symbol: T-Prof(smw)
+    tier: 2
+    run-on-projects: []
+    max-run-time: 1500
+    mozharness:
+        extra-options:
+            - --suite=sessionrestore-many-windows
+            - --gecko-profile
+
+talos-perf-reftest:
+    description: Talos perf-reftest
+    try-name: perf-reftest
+    treeherder-symbol: T(p)
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx.*)-64-shippable-qr.*: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32.*: []
+                    (linux|windows10-64|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+                    default: [trunk]
+    max-run-time: 1200
+    mozharness:
+        extra-options:
+            - --suite=perf-reftest
+
+talos-perf-reftest-profiling:
+    description: Talos perf-reftest with gecko profiling
+    try-name: perf-reftest-prof
+    treeherder-symbol: T-Prof(p)
+    tier: 2
+    run-on-projects: []
+    max-run-time: 1200
+    mozharness:
+        extra-options:
+            - --suite=perf-reftest
+            - --gecko-profile
+
+talos-perf-reftest-singletons:
+    description: Talos perf-reftest singletons
+    try-name: perf-reftest-singletons
+    treeherder-symbol: T(ps)
+    run-on-projects:
+        by-test-platform:
+            windows.*-32.*: []
+            (linux|windows10-64|macos)(?!.*shippable).*: []
+            (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+            default: [trunk]
+    max-run-time: 1500
+    mozharness:
+        extra-options:
+            - --suite=perf-reftest-singletons
+
+talos-perf-reftest-singletons-profiling:
+    description: Talos perf-reftest singletons with gecko profiling
+    try-name: perf-reftest-singletons-prof
+    treeherder-symbol: T-Prof(ps)
+    tier: 2
+    run-on-projects: []
+    max-run-time: 1500
+    mozharness:
+        extra-options:
+            - --suite=perf-reftest-singletons
+            - --gecko-profile
+
+talos-svgr:
+    description: Talos svgr
+    try-name: svgr
+    treeherder-symbol: T(s)
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx.*)-64-shippable-qr.*: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32.*: []
+                    (linux|windows10-64|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+                    default: [trunk]
+    max-run-time: 1800
+    mozharness:
+        extra-options:
+            - --suite=svgr
+
+talos-svgr-profiling:
+    description: Talos svgr with gecko profiling
+    try-name: svgr-prof
+    treeherder-symbol: T-Prof(s)
+    tier: 2
+    run-on-projects: []
+    max-run-time: 1800
+    mozharness:
+        extra-options:
+            - --suite=svgr
+            - --gecko-profile
+
+talos-tp5o:
+    description: Talos tp5o
+    try-name: tp5o
+    treeherder-symbol: T(tp)
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx.*)-64-shippable-qr.*: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32.*: []
+                    (linux|windows10-64|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+                    default: [trunk]
+    max-run-time: 1800
+    mozharness:
+        extra-options:
+            - --suite=tp5o
+
+talos-tp5o-profiling:
+    description: Talos tp5o with gecko profiling
+    try-name: tp5o-prof
+    treeherder-symbol: T-Prof(tp)
+    tier: 2
+    run-on-projects: []
+    max-run-time: 1800
+    mozharness:
+        extra-options:
+            - --suite=tp5o
+            - --gecko-profile
+
+talos-tabswitch:
+    description: Talos page scroll (tabswitch)
+    try-name: tabswitch
+    treeherder-symbol: T(tabswitch)
+    variants:
+        - webrender-sw
+    run-on-projects: []
+    max-run-time: 1800
+    mozharness:
+        extra-options:
+            - --suite=tabswitch
+
+talos-tabswitch-profiling:
+    description: Talos page scroll (tabswitch) with gecko profiling
+    try-name: tabswitch-prof
+    treeherder-symbol: T-Prof(tabswitch)
+    tier: 2
+    run-on-projects: []
+    max-run-time: 1200
+    mozharness:
+        extra-options:
+            - --suite=tabswitch
+            - --gecko-profile
+
+talos-webgl:
+    description: Talos WebGL
+    try-name: webgl
+    treeherder-symbol: T(webgl)
+    variants:
+        - webrender-sw
+        - webgl-ipc
+    run-on-projects:
+        by-variant:
+            webgl-ipc:
+                by-test-platform:
+                    (linux1804|windows10|macosx1015)-64.*: [trunk]
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    (linux1804|windows10|macosx1015)-64-shippable-qr.*: [trunk]
+                    default: []
+            default:
+                by-test-platform:
+                    windows.*-32.*: []
+                    (linux|windows10-64|macos)(?!.*shippable).*: []
+                    (linux|windows10-64|macos)(?!.*-qr).*: []
+                    default: [trunk]
+    max-run-time: 2100
+    mozharness:
+        extra-options:
+            by-test-platform:
+                windows10-64-ref-hw.*:
+                    - --suite=webgl
+                    - --skip-preflight
+                default:
+                    - --suite=webgl
+
+talos-webgl-profiling:
+    description: Talos WebGL with gecko profiling
+    try-name: webgl
+    treeherder-symbol: T-Prof(webgl)
+    tier: 2
+    variants:
+        - webgl-ipc
+    run-on-projects: []
+    max-run-time: 1800
+    mozharness:
+        extra-options:
+            - --suite=webgl
+            - --gecko-profile
+            - --setpref=dom.media.webcodecs.enabled=true
+
+talos-xperf:
+    description: Talos xperf
+    try-name: xperf
+    treeherder-symbol: T(x)
+    virtualization: virtual
+    os-groups: [Administrators]
+    run-as-administrator:
+        by-test-platform:
+            windows.*32.*: false
+            windows10.*64.*: true
+            windows11.*64.*: true
+    variants:
+        - webrender-sw
+    run-on-projects:
+        by-test-platform:
+            windows.*-32-shippable(?:-qr)?/.*: []
+            windows10.*-shippable-qr/.*: [trunk]
+            windows11.*-shippable-qr/.*: [trunk]
+            default: []
+    mozharness:
+        extra-options:
+            by-test-platform:
+                windows.*:
+                    - --suite=xperf
+                    # Disable the GPU process due to bug 1868737. There are
+                    # sandbox related issues with using the GPU process when
+                    # running xperf as an administrator which cause us to fail
+                    # due to generating minidumps.
+                    - --setpref=layers.gpu-process.enabled=false
+                default:
+                    - --suite=xperf
+        config:
+            by-test-platform:
+                windows.*:
+                    - talos/windows_vm_config.py
+
+talos-realworld-webextensions:
+    description: Talos tests with realworld WebExtensions
+    try-name: realworld-webextensions
+    treeherder-symbol: T(realwebext)
+    run-on-projects:
+        by-test-platform:
+            windows.*-32.*: []
+            (linux|windows10-64|macos)(?!.*shippable).*: []
+            (linux|windows10-64|macosx1015)(?!.*-qr).*: []
+            default: [trunk]
+    max-run-time: 1500
+    mozharness:
+        extra-options:
+            - --suite=realworld-webextensions
+
+talos-realworld-webextensions-profiling:
+    description: Talos tests with realworld WebExtensions with gecko profiling
+    try-name: realworld-webextensions-prof
+    treeherder-symbol: T-Prof(realwebext)
+    tier: 2
+    run-on-projects: []
+    max-run-time: 1500
+    mozharness:
+        extra-options:
+            - --suite=realworld-webextensions
+            - --gecko-profile
diff --git a/taskcluster/ci/test/test-platforms.yml b/taskcluster/ci/test/test-platforms.yml
new file mode 100644
index 0000000000..777652f191
--- /dev/null
+++ b/taskcluster/ci/test/test-platforms.yml
@@ -0,0 +1,505 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+# This file maps build platforms to test platforms.  In some cases, a
+# single build may be tested on multiple test platforms, but a single test
+# platform can only link to one build platform.  Both build and test platforms
+# are represented as <platform>/<type>, where <type> is what Treeherder calls a
+# collection.
+#
+# Each test platform further specifies the set of tests that will be scheduled
+# for the platform, referring to tests defined in test-sets.yml.
+#
+# Note that set does not depend on the tree; tree-dependent job selection
+# should be performed in the target task selection phase of task-graph
+# generation.
+
+
+##
+# Linux platforms (matching /linux.*/)
+# Linux1804-64 uses Ubuntu 18.04 and is run on docker
+
+linux1804-32-qr/debug:
+    build-platform: linux/debug
+    test-sets:
+        - linux32-gtest
+
+linux1804-32-qr/opt:
+    build-platform: linux/opt
+    test-sets:
+        - linux32-tests
+        - linux32-gtest
+
+linux1804-32-shippable-qr/opt:
+    build-platform: linux-shippable/opt
+    test-sets:
+        - linux32-tests
+        - linux32-gtest
+
+linux1804-64-qr/opt:
+    build-platform: linux64/opt
+    test-sets:
+        - awsy
+        - desktop-screenshot-capture
+        - linux1804-tests
+        - mochitest-webgpu
+        - web-platform-tests
+        - web-platform-tests-backlog
+        - talos
+        - browsertime
+
+linux1804-64-shippable-qr/opt:
+    build-platform: linux64-shippable/opt
+    test-sets:
+        - awsy
+        - desktop-screenshot-capture
+        - linux1804-tests
+        - mochitest-webgpu
+        - web-platform-tests
+        - web-platform-tests-backlog
+        - talos
+        - talos-profiling
+        - browsertime
+        - browsertime-profiling
+
+linux1804-64-nightlyasrelease-qr/opt:
+    build-platform: linux64-nightlyasrelease/opt
+    test-sets:
+        - browsertime
+
+linux1804-64-qr/debug:
+    build-platform: linux64/debug
+    test-sets:
+        - linux1804-tests
+        - mochitest-webgpu
+        - web-platform-tests
+
+linux1804-64-asan-qr/opt:
+    build-platform: linux64-asan/opt
+    test-sets:
+        - linux1804-tests
+        - mochitest-webgpu
+        - web-platform-tests
+
+linux1804-64-tsan-qr/opt:
+    build-platform: linux64-tsan/opt
+    test-sets:
+        - linux1804-tests
+        - mochitest-webgpu
+        - web-platform-tests
+
+linux1804-64-ccov-qr/opt:
+    build-platform: linux64-ccov/opt
+    test-sets:
+        - ccov-code-coverage-tests
+        - linux1804-tests
+        - linux1804-ccov-tests
+        - mochitest-webgpu
+        - web-platform-tests
+
+linux1804-64-devedition-qr/opt:
+    build-platform: linux64-devedition/opt
+    test-sets:
+        - desktop-screenshot-capture
+        - linux1804-tests
+        - web-platform-tests
+
+linux1804-64-clang-trunk-qr/opt:
+    build-platform: linux64-plain-clang-trunk/opt
+    test-sets:
+        - awsy
+        - browsertime-clang
+
+linux2204-64-wayland/debug:
+    build-platform: linux64/debug
+    test-sets:
+        - linux2204-wayland-tests
+        - web-platform-tests
+
+linux2204-64-wayland/opt:
+    build-platform: linux64/opt
+    test-sets:
+        - linux2204-wayland-tests
+        - web-platform-tests
+
+linux2204-64-wayland-shippable/opt:
+    build-platform: linux64-shippable/opt
+    test-sets:
+        - linux2204-wayland-tests
+        - web-platform-tests
+
+##
+# Windows platforms (matching /windows.*/)
+
+# win32
+windows10-32-shippable-qr/opt:
+    build-platform: win32-shippable/opt
+    build-signing-label: build-signing-win32-shippable/opt
+    test-sets:
+        - browsertime
+        - talos-profiling
+        - windows-talos
+
+windows10-32-qr/opt:
+    build-platform: win32/opt
+    test-sets:
+        - browsertime
+        - windows-talos
+
+
+# win11-32
+windows11-32-2009-shippable-qr/opt:
+    build-platform: win32-shippable/opt
+    build-signing-label: build-signing-win32-shippable/opt
+    test-sets:
+        - awsy
+        - desktop-screenshot-capture
+        - web-platform-tests
+        - windows32-2009-tests
+
+windows11-32-2009-qr/opt:
+    build-platform: win32/opt
+    build-signing-label: build-signing-win32/opt
+    test-sets:
+        - awsy
+        - desktop-screenshot-capture
+        - web-platform-tests
+        - windows32-2009-tests
+
+windows11-32-2009-qr/debug:
+    build-platform: win32/debug
+    build-signing-label: build-signing-win32/debug
+    test-sets:
+        - web-platform-tests
+        - windows32-2009-tests
+
+windows11-32-2009-mingwclang-qr/debug:
+    build-platform: win32-mingwclang/debug
+    test-sets:
+        - mingwclang-win32-tests-debug
+
+windows11-32-2009-mingwclang-qr/opt:
+    build-platform: win32-mingwclang/opt
+    test-sets:
+        - mingwclang-tests-opt
+
+# win64
+windows10-64-qr/opt:
+    build-platform: win64/opt
+    test-sets:
+        - windows-talos
+        - browsertime
+
+windows10-64-ref-hw-2017-qr/opt:
+    build-platform: win64-shippable/opt
+    test-sets:
+        - talos-ref-hw
+
+windows11-64-2009-hw-ref-shippable/opt:
+    build-platform: win64-shippable/opt
+    build-signing-label:
+        by-variant:
+            msix: repackage-signing-msix-win64/opt
+            default: build-signing-win64/opt
+    test-sets:
+        - windows-ref-hw-tests
+
+windows11-64-2009-hw-ref/opt:
+    build-platform: win64/opt
+    build-signing-label:
+        by-variant:
+            msix: repackage-signing-msix-win64/opt
+            default: build-signing-win64/opt
+    test-sets:
+        - windows-ref-hw-tests
+
+windows10-64-shippable-qr/opt:
+    build-platform: win64-shippable/opt
+    test-sets:
+        - talos-profiling
+        - windows-talos
+        - browsertime
+
+windows10-64-nightlyasrelease-qr/opt:
+    build-platform: win64-nightlyasrelease/opt
+    test-sets:
+        - browsertime
+
+# win10-64 2004
+windows10-64-2009-qr/debug:
+    build-platform: win64/debug
+    build-signing-label:
+        by-variant:
+            msix: repackage-signing-msix-win64/debug
+            default: build-signing-win64/debug
+    test-sets:
+        - windows10-2009-tests
+
+windows10-64-2009-qr/opt:
+    build-platform: win64/opt
+    build-signing-label:
+        by-variant:
+            msix: repackage-signing-msix-win64/opt
+            default: build-signing-win64/opt
+    test-sets:
+        - windows10-2009-tests
+
+windows10-64-2009-shippable-qr/opt:
+    build-platform: win64-shippable/opt
+    build-signing-label:
+        by-variant:
+            msix: repackage-signing-shippable-l10n-msix-win64-shippable/opt
+            default: build-signing-win64-shippable/opt
+    test-sets:
+        - windows10-2009-tests
+
+# win11-64 2009
+windows11-64-2009-ccov-qr/opt:
+    build-platform: win64-ccov/opt
+    build-signing-label: build-signing-win64-ccov/opt
+    test-sets:
+        - desktop-screenshot-capture
+        - ccov-code-coverage-tests
+        - windows11-64-2009-ccov-tests
+        - windows11-2009-tests
+
+windows11-64-2009-qr/debug:
+    build-platform: win64/debug
+    build-signing-label:
+        by-variant:
+            msix: repackage-signing-msix-win64/debug
+            default: build-signing-win64/debug
+    test-sets:
+        - web-platform-tests
+        - windows11-2009-tests
+
+windows11-64-2009-qr/opt:
+    build-platform: win64/opt
+    build-signing-label:
+        by-variant:
+            msix: repackage-signing-msix-win64/opt
+            default: build-signing-win64/opt
+    test-sets:
+        - awsy
+        - desktop-screenshot-capture
+        - web-platform-tests
+        - web-platform-tests-backlog
+        - windows11-2009-tests
+        - talos-xperf
+
+windows11-64-2009-shippable-qr/opt:
+    build-platform: win64-shippable/opt
+    build-signing-label:
+        by-variant:
+            msix: repackage-signing-shippable-l10n-msix-win64-shippable/opt
+            default: build-signing-win64-shippable/opt
+    test-sets:
+        - awsy
+        - desktop-screenshot-capture
+        - web-platform-tests
+        - web-platform-tests-backlog
+        - windows11-2009-tests
+        - talos-xperf
+
+windows11-64-2009-devedition-qr/opt:
+    build-platform: win64-devedition/opt
+    build-signing-label: build-signing-win64-devedition/opt
+    test-sets:
+        - desktop-screenshot-capture
+        - web-platform-tests
+        - windows11-2009-tests
+
+windows11-64-2009-asan-qr/opt:
+    build-platform: win64-asan/opt
+    test-sets:
+        - windows11-2009-tests
+
+windows11-64-2009-mingwclang-qr/debug:
+    build-platform: win64-mingwclang/debug
+    test-sets:
+        - mingwclang-tests-debug
+
+windows11-64-2009-mingwclang-qr/opt:
+    build-platform: win64-mingwclang/opt
+    test-sets:
+        - mingwclang-tests-opt
+
+
+##
+# MacOS X platforms (matching /macosx.*/)
+
+macosx1100-64-qr/debug:
+    build-platform: macosx64/debug
+    build-signing-label: repackage-macosx64/debug
+    test-sets:
+        - macosx1100-64-jittests
+
+macosx1100-64-aarch64-qr/debug:
+    build-platform: macosx64-aarch64/debug
+    build-signing-label: repackage-macosx64-aarch64/debug
+    test-sets:
+        - macosx1100-aarch64-qr-tests
+
+macosx1100-64-shippable-qr/opt:
+    build-platform: macosx64-shippable/opt
+    build-signing-label: repackage-macosx64-shippable/opt
+    test-sets:
+        - macosx1100-64-jittests
+        - macosx1100-64-qr-tests
+        # - macosx64-talos
+        # - browsertime-high-priority
+
+macosx1015-64-shippable-qr/opt:
+    build-platform: macosx64-shippable/opt
+    test-sets:
+        - awsy
+        - browsertime
+        - browsertime-profiling
+        - desktop-screenshot-capture
+        - macosx1015-64-qr-tests
+        - macosx64-talos
+        - talos-profiling
+        - web-platform-tests
+        - web-platform-tests-backlog
+
+macosx1015-64-nightlyasrelease-qr/opt:
+    build-platform: macosx64-nightlyasrelease/opt
+    test-sets:
+        - browsertime
+
+macosx1015-64-devedition-qr/opt:
+    build-platform: macosx64-devedition/opt
+    test-sets:
+        - macosx1015-64-qr-tests
+        - web-platform-tests
+
+macosx1015-64-qr/opt:
+    build-platform: macosx64/opt
+    test-sets:
+        - desktop-screenshot-capture
+        - macosx1015-64-qr-tests
+        - web-platform-tests
+        - web-platform-tests-backlog
+        - browsertime
+
+macosx1015-64-qr/debug:
+    build-platform: macosx64/debug
+    test-sets:
+        - macosx1015-64-qr-tests
+        - web-platform-tests
+
+macosx1015-64-ccov-qr/opt:
+    build-platform: macosx64-ccov/opt
+    test-sets:
+        - macosx1015-64-qr-tests
+
+macosx1400-64-shippable-qr/opt:
+    build-platform: macosx64-shippable/opt
+    test-sets:
+        - macosx1400-64-qr-tests
+
+##
+# Android platforms (matching /android-em.*/)
+#
+# android-em test platforms execute on android emulators.
+
+android-em-7.0-x86_64-qr/opt:
+    build-platform: android-x86_64/opt
+    test-sets:
+        - android-x86_64-tests
+        - web-platform-tests-backlog
+
+android-em-7.0-x86_64-lite-qr/opt:
+    build-platform: android-x86_64-lite/opt
+    test-sets:
+        - android-x86_64-tests
+        - web-platform-tests-backlog
+
+android-em-7.0-x86_64-shippable-qr/opt:
+    build-platform: android-x86_64-shippable/opt
+    test-sets:
+        - android-x86_64-tests
+        - web-platform-tests-backlog
+
+android-em-7.0-x86_64-shippable-lite-qr/opt:
+    build-platform: android-x86_64-shippable-lite/opt
+    test-sets:
+        - android-x86_64-tests
+        - web-platform-tests-backlog
+
+android-em-7.0-x86_64-qr/debug:
+    build-platform: android-x86_64/debug
+    test-sets:
+        - android-x86_64-tests
+
+android-em-7.0-x86_64-qr/debug-isolated-process:
+    build-platform: android-x86_64/debug-isolated-process
+    test-sets:
+        - android-x86_64-tests
+
+android-em-7.0-x86-qr/opt:
+    build-platform: android-x86/opt
+    test-sets:
+        - android-x86-tests
+
+# android-hw test platforms execute on real devices attached to Autophone hosts.
+
+# android-hw-a51-11-0 Samsung Galaxy A51 Android 11.0
+
+android-hw-a51-11-0-aarch64-qr/opt:
+    build-platform: android-aarch64/opt
+    test-sets:
+        - android-hw-browsertime
+#        - android-hw-browsertime-power
+
+android-hw-a51-11-0-aarch64-shippable-qr/opt:
+    build-platform: android-aarch64-shippable/opt
+    test-sets:
+        - android-hw-browsertime
+#        - android-hw-browsertime-power
+
+# android-hw-p5-13-0 Google Pixel 5 Android 13.0
+
+android-hw-p5-13-0-arm7-qr/opt:
+    build-platform: android-arm/opt
+    test-sets:
+        - android-hw-arm7-pgo-unittests
+
+android-hw-p5-13-0-arm7-shippable-qr/opt:
+    build-platform: android-arm-shippable/opt
+    test-sets:
+        - android-hw-arm7-pgo-unittests
+
+android-hw-p5-13-0-arm7-qr/debug:
+    build-platform: android-arm/debug
+    test-sets:
+        - android-hw-arm7-debug-unittests
+
+android-hw-p5-13-0-android-aarch64-qr/debug:
+    build-platform: android-aarch64/debug
+    test-sets:
+        - android-hw-aarch64
+        - android-hw-aarch64-debug-unittests
+
+android-hw-p5-13-0-android-aarch64-qr/opt:
+    build-platform: android-aarch64/opt
+    test-sets:
+        - android-hw-aarch64
+        - android-hw-aarch64-opt-unittests
+
+android-hw-p5-13-0-android-aarch64-shippable-qr/opt:
+    build-platform: android-aarch64-shippable/opt
+    test-sets:
+        - android-hw-aarch64
+        - android-hw-aarch64-pgo-unittests
+
+android-hw-p6-13-0-android-aarch64-shippable-qr/opt:
+    build-platform: android-aarch64-shippable/opt
+    test-sets:
+        - android-hw-speedometer-tests
+
+android-hw-s21-13-0-android-aarch64-shippable-qr/opt:
+    build-platform: android-aarch64-shippable/opt
+    test-sets:
+        - android-hw-speedometer-tests
diff --git a/taskcluster/ci/test/test-sets.yml b/taskcluster/ci/test/test-sets.yml
new file mode 100644
index 0000000000..90ef2145fe
--- /dev/null
+++ b/taskcluster/ci/test/test-sets.yml
@@ -0,0 +1,499 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+# Each key in this file specifies a set of tests to run.  Different test sets
+# may, for example, be bound to different test platforms.
+#
+# Note that set does not depend on the tree; tree-dependent job selection
+# should be performed in the target task selection phase of task-graph
+# generation.
+#
+# A test set has a name, and a list of tests that it contains.
+#
+# Test names given here reference tests.yml.
+
+### Feature-specific test groups
+
+web-platform-tests:
+    - web-platform-tests
+    - web-platform-tests-crashtest
+    - web-platform-tests-privatebrowsing
+    - web-platform-tests-print-reftest
+    - web-platform-tests-reftest
+    - web-platform-tests-wdspec
+    - web-platform-tests-webgpu
+    - web-platform-tests-canvas
+
+web-platform-tests-backlog:
+    - web-platform-tests-backlog
+    - web-platform-tests-reftest-backlog
+
+mochitest-devtools-chrome:
+    - mochitest-devtools-chrome
+
+mochitest-webgpu:
+    - mochitest-webgpu
+
+talos:
+    - talos-bcv
+    - talos-chrome
+    - talos-damp-inspector
+    - talos-damp-webconsole
+    - talos-damp-other
+    - talos-dromaeojs
+    - talos-g1
+    - talos-g3
+    - talos-g4
+    - talos-g5
+    - talos-other
+    - talos-sessionrestore-many-windows
+    - talos-svgr
+    - talos-tp5o
+    - talos-perf-reftest
+    - talos-perf-reftest-singletons
+    - talos-tabswitch
+    - talos-realworld-webextensions
+    - talos-webgl
+    # - talos-h1 Bug 1487031 - Disabled for not finding actionable regressions
+    # - talos-h2 Bug 1487031 - Disabled for not finding actionable regressions
+
+talos-profiling:
+    - talos-bcv-profiling
+    - talos-chrome-profiling
+    # - talos-damp-profiling - Disabled b/c of Bug 1597734
+    - talos-dromaeojs-profiling
+    - talos-g1-profiling
+    - talos-g3-profiling
+    - talos-g4-profiling
+    - talos-g5-profiling
+    - talos-motionmark-profiling
+    - talos-other-profiling
+    - talos-sessionrestore-many-windows-profiling
+    - talos-perf-reftest-profiling
+    - talos-perf-reftest-singletons-profiling
+    - talos-svgr-profiling
+    - talos-tp5o-profiling
+    - talos-tabswitch-profiling
+    - talos-realworld-webextensions-profiling
+    - talos-webgl-profiling
+
+talos-ref-hw:
+    - talos-webgl
+
+browsertime:
+    - browsertime-tp6
+    - browsertime-tp6-essential
+    - browsertime-tp6-bytecode
+    - browsertime-tp6-live
+    - browsertime-tp6-live-sheriffed
+    - browsertime-tp6-webextensions
+    - browsertime-benchmark
+    - browsertime-benchmark-wasm
+    - browsertime-youtube-playback
+    - browsertime-youtube-playback-power
+    - browsertime-custom
+    - browsertime-first-install
+    - browsertime-responsiveness
+    - browsertime-regression-tests
+    - browsertime-upload
+    - browsertime-speculative
+    - browsertime-throttled
+    - browsertime-pageload-benchmark
+    - browsertime-indexeddb
+
+browsertime-clang:
+    - browsertime-tp6
+    - browsertime-tp6-essential
+    - browsertime-tp6-bytecode
+    - browsertime-tp6-live
+    - browsertime-tp6-live-sheriffed
+    - browsertime-tp6-webextensions
+    - browsertime-benchmark
+    - browsertime-benchmark-wasm
+    - browsertime-youtube-playback
+    - browsertime-responsiveness
+
+browsertime-profiling:
+    - browsertime-tp6-profiling
+
+browsertime-high-priority:
+    - browsertime-benchmark
+    - browsertime-tp6
+
+awsy:
+    - awsy
+    - awsy-base
+    - awsy-dmd
+    - awsy-base-dmd
+    - awsy-tp6
+
+ccov-code-coverage-tests:
+    - test-coverage
+    - test-coverage-wpt
+
+mochitest-valgrind:
+    - mochitest-valgrind
+
+desktop-screenshot-capture:
+    - mochitest-browser-screenshots
+
+### Specific platform test sets
+
+# Linux
+linux32-gtest:
+    - gtest
+
+linux32-tests:
+    - web-platform-tests
+
+linux1804-tests:
+    - cppunittest
+    - crashtest
+    - firefox-ui-functional
+    - gtest
+    # - jittest  # See comment in linux1804-ccov-tests set.
+    - jsreftest
+    - marionette
+    - mochitest-a11y
+    - mochitest-browser-a11y
+    - mochitest-browser-chrome
+    - mochitest-browser-media
+    - mochitest-chrome
+    - mochitest-chrome-gpu
+    - mochitest-devtools-chrome
+    - mochitest-media
+    - mochitest-plain
+    - mochitest-plain-gpu
+    - mochitest-remote
+    - mochitest-webgl1-core
+    - mochitest-webgl1-ext
+    - mochitest-webgl2-core
+    - mochitest-webgl2-ext
+    - reftest
+    - reftest-snapshot
+    - telemetry-tests-client
+    - test-verify
+    - test-verify-gpu
+    - test-verify-wpt
+    - xpcshell
+
+linux1804-ccov-tests:
+    # jittest run on regular linux builds is redundant with SM(p), so we omit it
+    # from the linux1804-tests and linux1804-qr-tests sets. But, we still want
+    # to run it on ccov builds, so we have this set that has it and which runs
+    # on ccov builds.
+    - jittest
+
+linux2204-wayland-tests:
+    - mochitest-plain
+    - cppunittest
+    - crashtest
+    - firefox-ui-functional
+    - gtest
+    - jsreftest
+    - marionette
+    - mochitest-a11y
+    - mochitest-browser-a11y
+    - mochitest-browser-chrome
+    - mochitest-browser-chrome-failures
+    - mochitest-browser-media
+    - mochitest-chrome
+    - mochitest-chrome-gpu
+    - mochitest-devtools-chrome
+    - mochitest-media
+    - mochitest-plain
+    - mochitest-plain-gpu
+    - mochitest-remote
+    - mochitest-webgl1-core
+    - mochitest-webgl1-ext
+    - mochitest-webgl2-core
+    - mochitest-webgl2-ext
+    - reftest
+    - reftest-snapshot
+    - telemetry-tests-client
+    - test-verify
+    - test-verify-gpu
+    - test-verify-wpt
+    - xpcshell
+
+# Windows
+windows32-2009-tests:
+    - cppunittest
+    - crashtest
+    - gtest
+    - firefox-ui-functional
+    - jsreftest
+    - marionette
+    - mochitest-a11y
+    - mochitest-browser-a11y
+    - mochitest-browser-chrome
+    - mochitest-browser-media
+    - mochitest-chrome
+    - mochitest-chrome-gpu
+    - mochitest-media
+    - mochitest-plain
+    - mochitest-plain-gpu
+    - mochitest-remote
+    - mochitest-webgpu
+    - reftest
+    - telemetry-tests-client
+    - test-verify
+    - test-verify-gpu
+    - test-verify-wpt
+    - xpcshell
+
+windows10-2009-tests:
+    - cppunittest
+    - gtest
+    - mochitest-chrome
+    - mochitest-chrome-gpu
+    - mochitest-plain
+    - mochitest-plain-gpu
+    - xpcshell
+
+windows11-64-2009-ccov-tests:
+    - jittest
+    - test-coverage
+    - web-platform-tests
+    - web-platform-tests-crashtest
+    - web-platform-tests-print-reftest
+    - web-platform-tests-reftest
+    - web-platform-tests-wdspec
+
+windows11-2009-tests:
+    - cppunittest
+    - crashtest
+    - firefox-ui-functional
+    - gtest
+    - jsreftest
+    - marionette
+    - mochitest-a11y
+    - mochitest-browser-a11y
+    - mochitest-browser-chrome
+    - mochitest-browser-media
+    - mochitest-chrome
+    - mochitest-chrome-gpu
+    - mochitest-devtools-chrome
+    - mochitest-media
+    - mochitest-plain
+    - mochitest-plain-gpu
+    - mochitest-remote
+    - mochitest-webgpu
+    - mochitest-webgl1-core
+    - mochitest-webgl1-ext
+    - mochitest-webgl2-core
+    - mochitest-webgl2-ext
+    - reftest
+    - telemetry-tests-client
+    - test-verify
+    - test-verify-gpu
+    - test-verify-wpt
+    - xpcshell
+
+mingwclang-tests-debug:
+    - cppunittest
+    - firefox-ui-functional
+    - mochitest-a11y
+    - mochitest-chrome-gpu
+    - mochitest-plain-gpu
+    - mochitest-webgl1-core
+    - mochitest-webgl1-ext
+    - mochitest-webgl2-core
+    - mochitest-webgl2-ext
+    - mochitest-webgpu
+    - reftest
+    - telemetry-tests-client
+
+# The following is the same as the above block, minus reftests.
+# Reftests were disabled due to frequent hangs; see bug 1642719
+# for re-enabling.
+mingwclang-win32-tests-debug:
+    - cppunittest
+    - firefox-ui-functional
+    - mochitest-a11y
+    - mochitest-chrome-gpu
+    - mochitest-plain-gpu
+    - mochitest-webgl1-core
+    - mochitest-webgl1-ext
+    - mochitest-webgl2-core
+    - mochitest-webgl2-ext
+    - mochitest-webgpu
+    # - reftest - disabled, see bug 1642719
+    - telemetry-tests-client
+
+mingwclang-tests-opt:
+    - cppunittest
+    - mochitest-chrome-gpu
+    - mochitest-plain-gpu
+
+windows-talos:
+    - talos-bcv
+    - talos-chrome
+    - talos-damp-inspector
+    - talos-damp-webconsole
+    - talos-damp-other
+    - talos-dromaeojs
+    - talos-g1
+    - talos-g4
+    - talos-g5
+    - talos-other
+    - talos-sessionrestore-many-windows
+    - talos-perf-reftest
+    - talos-perf-reftest-singletons
+    - talos-svgr
+    - talos-tp5o
+    - talos-tabswitch
+    - talos-realworld-webextensions
+    - talos-webgl
+    # - talos-h1 Bug 1487031 - Disabled for not finding actionable regressions
+
+windows-ref-hw-tests:
+    - mochitest-media
+
+talos-xperf:
+    - talos-xperf
+
+# macOS
+macosx1100-64-jittests:
+    - jittest
+
+macosx1100-64-qr-tests:
+    - crashtest
+    - jsreftest
+    - mochitest-browser-a11y
+    - mochitest-browser-chrome
+    - mochitest-browser-media
+    - mochitest-chrome-gpu
+    - mochitest-media
+    - mochitest-webgpu
+    - mochitest-webgl1-core
+    - mochitest-webgl1-ext
+    - mochitest-webgl2-core
+    - mochitest-webgl2-ext
+    - reftest
+    - xpcshell
+
+macosx1100-aarch64-qr-tests:
+    - mochitest-media
+
+macosx1015-64-qr-tests:
+    - cppunittest
+    - crashtest
+    - firefox-ui-functional
+    - gtest
+    - jittest
+    - jsreftest
+    - marionette
+    - mochitest-a11y
+    - mochitest-browser-a11y
+    - mochitest-browser-chrome
+    - mochitest-browser-media
+    - mochitest-chrome
+    - mochitest-chrome-gpu
+    - mochitest-devtools-chrome
+    - mochitest-media
+    - mochitest-plain
+    - mochitest-plain-gpu
+    - mochitest-remote
+    - mochitest-webgl1-core
+    - mochitest-webgl1-ext
+    - mochitest-webgl2-core
+    - mochitest-webgl2-ext
+    - mochitest-webgpu
+    - reftest
+    - telemetry-tests-client
+    - test-verify
+    - test-verify-gpu
+    - test-verify-wpt
+    - xpcshell
+
+macosx64-talos:
+    - talos-bcv
+    - talos-chrome
+    - talos-damp-inspector
+    - talos-damp-webconsole
+    - talos-damp-other
+    - talos-dromaeojs
+    - talos-g1
+    - talos-g4
+    - talos-g5
+    - talos-other
+    - talos-sessionrestore-many-windows
+    - talos-svgr
+    - talos-tp5o
+    - talos-perf-reftest
+    - talos-perf-reftest-singletons
+    - talos-realworld-webextensions
+    - talos-webgl
+    - talos-tabswitch
+    # - talos-h1 # too long to unpack profile- Bug 1442893
+
+macosx1400-64-qr-tests:
+    - browsertime-benchmark
+
+# Android
+
+android-x86_64-tests:
+    - cppunittest
+    - crashtest
+    - geckoview-junit
+    - gtest
+    - mochitest-media
+    - mochitest-plain
+    - mochitest-plain-gpu
+    # - mochitest-webgl1-core # Harness issues?
+    # - mochitest-webgl1-ext
+    # - mochitest-webgl2-core # Emulator not creating ES3?
+    # - mochitest-webgl2-ext
+    - reftest
+    - test-verify
+    - web-platform-tests
+    - web-platform-tests-crashtest
+    - web-platform-tests-reftest
+    - web-platform-tests-wdspec
+    - xpcshell
+
+android-x86-tests:
+    - cppunittest
+
+android-hw-aarch64-opt-unittests:
+    - jittest
+
+android-hw-arm7-pgo-unittests:
+    - jittest-all
+
+android-hw-aarch64-pgo-unittests:
+    - jittest
+
+android-hw-arm7-debug-unittests:
+    - jittest
+
+android-hw-aarch64-debug-unittests:
+    - jittest
+
+android-hw-aarch64:
+    - crashtest-qr
+    - reftest-qr
+    - mochitest-media
+    - mochitest-webgl1-core
+    - mochitest-webgl1-ext
+    - mochitest-webgl2-core
+
+android-hw-browsertime:
+    - browsertime-tp6m
+    - browsertime-tp6m-essential
+    - browsertime-tp6m-webextensions
+    - browsertime-tp6m-live
+    - browsertime-benchmark-speedometer-mobile
+    - browsertime-benchmark-speedometer3-mobile
+    - browsertime-youtube-playback-mobile
+    - browsertime-benchmark-unity-webgl-mobile
+    - browsertime-benchmark-motionmark
+
+android-hw-browsertime-profiling:
+    - browsertime-tp6m-profiling
+
+android-hw-speedometer-tests:
+    - browsertime-benchmark-speedometer-mobile
+    - browsertime-benchmark-speedometer3-mobile
diff --git a/taskcluster/ci/test/variants.yml b/taskcluster/ci/test/variants.yml
new file mode 100644
index 0000000000..1bfe00d001
--- /dev/null
+++ b/taskcluster/ci/test/variants.yml
@@ -0,0 +1,324 @@
+---
+1proc:
+    description: "{description} with e10s disabled"
+    component: "Testing::General"
+    expiration: "never"
+    suffix: "1proc"
+    mozinfo: "e10s"
+    merge:
+        mozharness:
+            extra-options:
+                - "--disable-e10s"
+                - "--disable-fission"
+
+headless:
+    description: "{description} without a window"
+    component: "Firefox::Headless"
+    expiration: "never"
+    suffix: "headless"
+    mozinfo: "headless"
+    replace:
+        tier: 2
+    merge:
+        mozharness:
+            extra-options:
+                - "--headless"
+
+a11y-checks:
+    description: "{description} with accessibility checks enabled"
+    component: "Core::Disability Access APIs"
+    expiration: "2024-03-01"
+    suffix: "a11y-checks"
+    mozinfo: "a11y_checks"
+    replace:
+        tier: 2
+    merge:
+        mozharness:
+            extra-options:
+                - "--enable-a11y-checks"
+
+aab:
+    description: "{description} with aab test_runner"
+    component: "GeckoView::General"
+    expiration: "2024-03-01"
+    when: &gv_e10s_filter
+        $eval: '"android" in task["test-platform"]'
+    suffix: "aab"
+    # Need to add jdk but there isn't a good way to do that
+    # so we just replace the toolchain list
+    merge:
+        fetches:
+            toolchain:
+                - android-system-image-x86_64-linux
+                - android-avd-x86_64-linux
+                - android-emulator-linux
+                - linux64-minidump-stackwalk
+                - linux64-fix-stacks
+                - linux64-jdk
+    replace:
+        target: "geckoview-test_runner.aab"
+
+geckoview-no-fission:
+    description: "{description} without fission enabled"
+    component: "GeckoView::Sandboxing"
+    expiration: "2024-03-01"
+    when:
+        <<: *gv_e10s_filter
+    suffix: "nofis"
+    mozinfo: "fission"
+    merge:
+        mozharness:
+            extra-options:
+                - "--disable-fission"
+
+geckoview-fission:
+    description: "{description} with fission enabled and default isolation strategy"
+    component: "GeckoView::Sandboxing"
+    expiration: "2024-03-01"
+    when:
+        <<: *gv_e10s_filter
+    suffix: "fis"
+    mozinfo: "fission"
+
+geckoview-fission-isolate-high-value:
+    description: "{description} with fission enabled and isolation strategy isolateHighValue"
+    component: "GeckoView::Sandboxing"
+    expiration: "2024-03-01"
+    when:
+        <<: *gv_e10s_filter
+    suffix: "fis-hv"
+    mozinfo: "fission-high-value"
+    merge:
+        mozharness:
+            extra-options:
+                - "--setpref=fission.webContentIsolationStrategy=2"
+
+no-fission:
+    description: "{description} without fission enabled"
+    component: "Core::DOM: Content Processes"
+    expiration: "2024-03-01"
+    suffix: "nofis"
+    mozinfo: "fission"
+    merge:
+        mozharness:
+            extra-options:
+                - "--disable-fission"
+
+xorigin:
+    description: "{description} with cross-origin"
+    component: "Core::DOM: Content Processes"
+    expiration: "never"
+    suffix: "xorig"
+    mozinfo: "xorigin"
+    replace:
+        e10s: true
+    merge:
+        mozharness:
+            extra-options:
+                - "--enable-xorigin-tests"
+                - "--setpref=privacy.partition.always_partition_third_party_non_cookie_storage=false"
+
+conditioned_profile:
+    description: "{description} with conditioned profile"
+    component: "Testing::General"
+    expiration: "2024-03-01"
+    suffix: "condprof"
+    mozinfo: "condprof"
+    merge:
+        mozharness:
+            extra-options:
+                - "--conditioned-profile"
+    replace:
+        chunks: 8
+
+socketprocess:
+    description: "{description} with socket process enabled"
+    component: "Core::Networking"
+    expiration: "2024-09-01"
+    suffix: "spi"
+    mozinfo: "socketprocess_e10s"
+    merge:
+        mozharness:
+            extra-options:
+                - "--setpref=media.peerconnection.mtransport_process=true"
+                - "--setpref=network.process.enabled=true"
+
+socketprocess_networking:
+    description: "{description} with networking on socket process enabled"
+    component: "Core::Networking"
+    expiration: "2024-09-01"
+    suffix: "spi-nw"
+    mozinfo: "socketprocess_networking"
+    merge:
+        mozharness:
+            extra-options:
+                - "--setpref=network.process.enabled=true"
+                - "--setpref=network.http.network_access_on_socket_process.enabled=true"
+
+# -
+# Webrender DComp variants for Win10
+
+webrender-dcomp-disabled:
+    description: "{description} with dcomp disabled"
+    component: "Core::Graphics: WebRender"
+    expiration: "2024-03-01"
+    suffix: "wr-dc0"
+    when:
+        $eval: '"windows1" in task["test-platform"]'
+    merge:
+        mozharness:
+            extra-options:
+                - "--setpref=gfx.webrender.dcomp-win.enabled=false"
+                - "--setpref=gfx.webrender.dcomp-video-overlay-win=false"
+                - "--setpref=gfx.webrender.dcomp-video-overlay-win.force-enabled=false"
+                - "--setpref=gfx.webrender.compositor=false"
+                - "--setpref=gfx.webrender.compositor.force-enabled=false"
+
+webrender-dcomp-present:  # Default variant ends up like this.
+    description: "{description} with dcomp present but not overlays"
+    component: "Core::Graphics: WebRender"
+    expiration: "2024-03-01"
+    suffix: "wr-dc1-p"
+    when:
+        $eval: '"windows1" in task["test-platform"]'
+    merge:
+        mozharness:
+            extra-options:
+                - "--setpref=gfx.webrender.dcomp-win.enabled=true"
+                - "--setpref=gfx.webrender.dcomp-video-overlay-win=false"
+                - "--setpref=gfx.webrender.dcomp-video-overlay-win.force-enabled=false"
+                - "--setpref=gfx.webrender.compositor=false"
+                - "--setpref=gfx.webrender.compositor.force-enabled=false"
+
+webrender-dcomp-overlays:
+    description: "{description} with dcomp overlays but not compositing"
+    component: "Core::Graphics: WebRender"
+    expiration: "2024-03-01"
+    suffix: "wr-dc2-o"
+    when:
+        $eval: '"windows1" in task["test-platform"]'
+    merge:
+        mozharness:
+            extra-options:
+                - "--setpref=gfx.webrender.dcomp-win.enabled=true"
+                - "--setpref=gfx.webrender.dcomp-video-overlay-win=true"
+                - "--setpref=gfx.webrender.dcomp-video-overlay-win.force-enabled=true"
+                - "--setpref=gfx.webrender.compositor=false"
+                - "--setpref=gfx.webrender.compositor.force-enabled=false"
+
+webrender-dcomp-compositing:
+    description: "{description} with dcomp compositing"
+    component: "Core::Graphics: WebRender"
+    expiration: "2024-03-01"
+    suffix: "wr-dc3-c"
+    when:
+        $eval: '"windows1" in task["test-platform"]'
+    merge:
+        mozharness:
+            extra-options:
+                - "--setpref=gfx.webrender.dcomp-win.enabled=true"
+                - "--setpref=gfx.webrender.dcomp-video-overlay-win=true"
+                - "--setpref=gfx.webrender.dcomp-video-overlay-win.force-enabled=true"
+                - "--setpref=gfx.webrender.compositor=true"
+                - "--setpref=gfx.webrender.compositor.force-enabled=true"
+
+# -
+
+webrender-sw:
+    description: "{description} with software webrender enabled"
+    component: "Core::Graphics: WebRender"
+    expiration: "2024-03-01"
+    suffix: "swr"
+    mozinfo: "swgl"
+    merge:
+        webrender: true
+        mozharness:
+            extra-options:
+                - "--setpref=gfx.webrender.software=true"
+
+webgl-ipc:
+    description: "{description} with WebGL IPC process enabled"
+    component: "Core::Graphics: CanvasWebGL"
+    expiration: "2024-03-01"
+    suffix: "gli"
+    merge:
+        mozharness:
+            extra-options:
+                - "--setpref=webgl.out-of-process=true"
+                - "--setpref=security.sandbox.content.headless=true"
+
+devtools-no-eft:
+    description: "{description} with DevTools EFT disabled"
+    component: "DevTools::Framework"
+    expiration: "2024-03-01"
+    suffix: "dt-no-eft"
+    merge:
+        mozharness:
+            extra-options:
+                - "--setpref=devtools.every-frame-target.enabled=false"
+
+wmf-media-engine:
+    description: "{description} with Windows Media Foundation media engine enabled"
+    component: "Core::Audio/Video: Playback"
+    expiration: "2024-04-10"
+    when:
+        $eval: '"windows1" in task["test-platform"]'
+    suffix: "wmfme"
+    mozinfo: "wmfme"
+    replace:
+        tier: 2
+    merge:
+        mozharness:
+            extra-options:
+                - "--tag=media-engine-compatible"
+                - "--setpref=media.wmf.media-engine.enabled=1"
+                - "--setpref=media.wmf.media-engine.channel-decoder.enabled=true"
+                - "--setpref=media.eme.wmf.clearkey.enabled=true"
+
+media-gpu:
+    description: "{description} for running media tests on the GPU worker"
+    component: "Core::Audio/Video: Playback"
+    expiration: "2024-04-21"
+    suffix: "mda-gpu"
+    mozinfo: "mda_gpu"
+    merge:
+        virtualization: virtual-with-gpu
+        mozharness:
+            extra-options:
+                - "--tag=media-gpu"
+                - "--setpref=media.hardware-video-decoding.force-enabled=true"
+
+msix:
+    description: "{description} from msix packages"
+    component: "Firefox:Installer"
+    expiration: "never"
+    suffix: "msix"
+    mozinfo: "msix"
+    when:
+        $eval: '"windows1" in task["test-platform"] && "-64" in task["test-platform"] && ("opt" in task["test-platform"] || "debug" in task["test-platform"]) && !("asan" in task["test-platform"]) && !("ccov" in task["test-platform"])'
+    merge:
+        mozharness:
+            extra-options:
+                - "--installer-path installer.msix"
+
+http3:
+    description: "{description} with http3 server"
+    component: "Core::Networking"
+    expiration: "2024-09-01"
+    suffix: "http3"
+    mozinfo: "http3"
+    merge:
+        mozharness:
+            extra-options:
+                - "--use-http3-server"
+
+http2:
+    description: "{description} with http2 server"
+    component: "Core::Networking"
+    expiration: "2024-09-01"
+    suffix: "http2"
+    mozinfo: "http2"
+    merge:
+        mozharness:
+            extra-options:
+                - "--use-http2-server"
diff --git a/taskcluster/ci/test/web-platform.yml b/taskcluster/ci/test/web-platform.yml
new file mode 100644
index 0000000000..5f850d16c1
--- /dev/null
+++ b/taskcluster/ci/test/web-platform.yml
@@ -0,0 +1,598 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    suite:
+        category: web-platform-tests
+    instance-size: xlarge
+    max-run-time:
+        by-test-platform:
+            android-em-7.0-x86_64/debug: 7200
+            default: 5400
+    mozharness:
+        script: web_platform_tests.py
+        config:
+            by-test-platform:
+                windows.*:
+                    - web_platform_tests/prod_config_windows_taskcluster.py
+                macosx.*:
+                    - web_platform_tests/prod_config_mac.py
+                android-em.*:
+                    - android/android-x86_64.py
+                    - web_platform_tests/prod_config_android.py
+                default:
+                    - web_platform_tests/prod_config.py
+                    - remove_executables.py
+    target:
+        by-test-platform:
+            android-em-7.0-x86_64-shippable(-lite)?-qr/opt: geckoview-test_runner.apk
+            android-em-7.0-x86_64(-lite)?-qr/opt: geckoview-test_runner.apk
+            android-em-7.0-x86_64(-lite)?-qr/debug(-isolated-process)?: geckoview-test_runner.apk
+            default: null
+
+web-platform-tests:
+    description: "Web platform test run"
+    suite: web-platform-tests
+    treeherder-symbol: W(wpt)
+    virtualization: virtual
+    tier:
+        by-test-platform:
+            android-em-7.0-x86_64-qr/debug-isolated-process: 3
+            default: default
+    chunks:
+        by-test-platform:
+            android.*/debug: 32
+            android.*: 24
+            linux.*64-tsan-qr/opt: 32
+            linux.*64-asan(-qr)?/opt: 22
+            linux.*64-ccov.*/opt: 20
+            linux.*/debug: 16
+            macosx.*/debug: 18
+            windows.*32.*/opt: 12
+            windows.*/debug: 16
+            windows.*-ccov.*/opt: 14
+            default: 10
+    max-run-time:
+        by-test-platform:
+            .*-ccov.*/.*: 10800
+            linux.*64(-tsan|-asan)-qr/opt: 14400
+            linux.*64(-qr)?/debug: 10800
+            macosx.*/debug: 10800
+            android-em.*/.*: 10800
+            default: 7200
+    variants:
+        - no-fission
+        - webrender-sw+no-fission
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    .*-32.*/.*: []
+                    linux.*64-qr/debug: built-projects
+                    windows.*-qr/debug: built-projects
+                    android-em-7.0-x86_64-qr/debug: []
+                    default: []
+            webrender-sw+no-fission:
+                by-test-platform:
+                    .*-32.*/.*: []
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux.*64-qr/debug: built-projects
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    android.*: built-projects
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*wayland.*: []
+                    default: built-projects
+    mozharness:
+        chunked: true
+        extra-options:
+            - --test-type=testharness
+            - --skip-implementation-status=backlog
+            - --skip-implementation-status=not-implementing
+            - --skip-timeout
+            - --skip-crash
+            # Because we have a separate job for them, don't run the (core)
+            # webgpu/* tests in the main WPT runs. (but still run tests in dirs
+            # other than webgpu/* that are tagged webgpu, e.g. canvas tests)
+            - --exclude-tag=webgpu
+            - --exclude-tag=canvas
+
+web-platform-tests-backlog:
+    description: "Web platform test (backlog) run"
+    treeherder-symbol: W-b(wpt)
+    variants:
+        - no-fission
+    chunks:
+        by-test-platform:
+            android.*: 3
+            default: 2
+    max-run-time:
+        by-test-platform:
+            android.*/opt: 7200
+            default: 3600
+    run-on-projects:
+        by-variant:
+            no-fission:
+                by-test-platform:
+                    android.*: ['mozilla-central']
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*wayland.*: []
+                    default: ['mozilla-central']
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    tier: 2
+    mozharness:
+        chunked: true
+        extra-options:
+            - --test-type=testharness
+            - --skip-implementation-status=implementing
+            - --skip-implementation-status=not-implementing
+            - --backlog
+            - --exclude-tag=webgpu
+
+web-platform-tests-privatebrowsing:
+    description: "Web platform privatebrowsing test run"
+    suite: web-platform-tests
+    treeherder-symbol: W(pb)
+    virtualization: virtual
+    tier: default
+    chunks: 1
+    max-run-time: 1800
+    variants: []  # We don't need sw or nofis testing.
+    run-on-projects:
+        by-test-platform:
+            android.*: []
+            macos.*: []
+            .*-(wayland).*/.*: []
+            default: built-projects
+    mozharness:
+        chunked: true
+        extra-options:
+            - --test-type=testharness
+            - --default-exclude
+            - --setpref=browser.privatebrowsing.autostart=true
+            - --setpref=dom.cache.privateBrowsing.enabled=true
+            - --tag=privatebrowsing
+
+web-platform-tests-reftest:
+    description: "Web platform reftest run"
+    schedules-component: web-platform-tests-reftest
+    treeherder-symbol: W(Wr)
+    virtualization:
+        by-test-platform:
+            windows.*-64.*-qr/.*: virtual-with-gpu
+            default: virtual
+    chunks:
+        by-test-platform:
+            .*-ccov.*/.*: 8
+            linux.*64-tsan-qr/opt: 16
+            linux1804-64(-asan)?-qr/.*: 6
+            macosx10.*-64/debug: 6
+            macosx10.*-64/opt: 3
+            windows.*-(32|64)(-qr)?/debug: 5
+            android.*: 6
+            default: 4
+    variants:
+        - no-fission
+        - webrender-sw+no-fission
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    .*-32.*/.*: []
+                    linux.*64-qr/debug: built-projects
+                    windows.*-qr/debug: built-projects
+                    default: []
+            webrender-sw+no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    android.*: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*wayland.*: []
+                    default: built-projects
+    tier:
+        by-test-platform:
+            android-em-7.0-x86_64-qr/debug-isolated-process: 3
+            default: default
+    mozharness:
+        extra-options:
+            - --test-type=reftest
+            - --skip-implementation-status=backlog
+            - --skip-implementation-status=not-implementing
+            - --skip-timeout
+            - --skip-crash
+
+web-platform-tests-webgpu:
+    description: "Web platform WebGPU test run"
+    suite: web-platform-tests
+    treeherder-symbol: W(webgpu)
+    virtualization: virtual-with-gpu
+    tier:
+        by-test-platform:
+            .*-32.*/.*: 3
+            android.*: 3  # https://bugzilla.mozilla.org/show_bug.cgi?id=1849914
+            macos.*: 3  # https://bugzilla.mozilla.org/show_bug.cgi?id=1849913
+            linux2204.*-64.*: 3  # https://bugzilla.mozilla.org/show_bug.cgi?id=1849912
+            windows.*-64.*: 3  # https://bugzilla.mozilla.org/show_bug.cgi?id=1849911
+            default: 3
+    # Choice of `chunks`:
+    # Time-to-TEST-START on Windows is ~7m (~9m for debug).
+    # (though we're working on reducing this!)
+    # Devs would love ~10-15m runs, but we don't want to be more than
+    # 50% overhead, so let's aim for 15m (20m debug)
+    chunks:
+        by-test-platform:
+            linux2204.*-64.*: 15
+            macos.*: 20
+            windows.*-64.*/opt.*: 15
+            windows.*-64.*/debug.*: 20
+            default: 10
+    max-run-time:
+        by-test-platform:
+            .*/debug: 5400  # 90m
+            default: 3200  # 60m
+    variants: []  # We don't need sw or nofis testing.
+    run-on-projects:
+        by-test-platform:
+            android.*: []  # Out of scope
+            linux1804.*: []  # We don't support anything less than Mesa Lavapipe 22.1.2, so this is _out_.
+            .*-wayland/debug.*: []  # https://bugzilla.mozilla.org/show_bug.cgi?id=1864700
+            default: ['mozilla-central']
+    mozharness:
+        chunked: true
+        extra-options:
+            by-test-platform:
+                macos.*:
+                    - --test-type=testharness
+                    - --default-exclude
+                    - --tag=webgpu
+                    - --exclude-tag=canvas
+                    - --setpref=gfx.webgpu.ignore-blocklist=true
+                default:
+                    - --test-type=testharness
+                    - --default-exclude
+                    - --tag=webgpu
+                    - --exclude-tag=canvas
+
+web-platform-tests-canvas:
+    description: "Web platform Canvas test run"
+    suite: web-platform-tests
+    treeherder-symbol: W(canvas)
+    virtualization: virtual-with-gpu
+    tier:
+        by-test-platform:
+            android-em-7.0-x86_64-qr/debug-isolated-process: 3
+            default: default
+    chunks:
+        by-test-platform:
+            windows.*: 2
+            .*tsan.*: 2
+            linux.*/debug: 2
+            linux.*asan.*: 2
+            default: 1
+    max-run-time:
+        by-test-platform:
+            .*tsan.*: 3600
+            default: 1800
+    variants:
+        - no-fission
+        - webrender-sw+no-fission
+        - webrender-sw
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    .*-32.*/.*: []
+                    linux.*64-qr/debug: built-projects
+                    windows.*-qr/debug: built-projects
+                    android-em-7.0-x86_64-qr/debug: []
+                    default: []
+            webrender-sw+no-fission:
+                by-test-platform:
+                    .*-32.*/.*: []
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux.*64-qr/debug: built-projects
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    android.*: built-projects
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*wayland.*: []
+                    default: built-projects
+    mozharness:
+        chunked: true
+        extra-options:
+            - --test-type=testharness
+            - --skip-implementation-status=backlog
+            - --skip-implementation-status=not-implementing
+            - --skip-timeout
+            - --skip-crash
+            # Because we have a separate job for them, don't run the (core)
+            # webgpu/* tests in the main WPT runs. (but still run tests in dirs
+            # other than webgpu/* that are tagged webgpu, e.g. canvas tests)
+            - --default-exclude
+            - --tag=canvas
+            - --exclude-tag=webgpu
+
+web-platform-tests-reftest-backlog:
+    description: "Web platform reftest (backlog) run"
+    schedules-component: web-platform-tests-reftest
+    treeherder-symbol: W-b(Wr)
+    virtualization: virtual
+    chunks: 1
+    variants:
+        - no-fission
+    run-on-projects:
+        by-variant:
+            no-fission:
+                by-test-platform:
+                    android.*: ['mozilla-central']
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*wayland.*: []
+                    default: ['mozilla-central']
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    tier: 2
+    mozharness:
+        extra-options:
+            - --test-type=reftest
+            - --skip-implementation-status=implementing
+            - --skip-implementation-status=not-implementing
+            - --backlog
+            - --exclude-tag=webgpu
+
+web-platform-tests-wdspec:
+    description: "Web platform webdriver-spec run"
+    schedules-component: web-platform-tests-wdspec
+    treeherder-symbol: W(Wd)
+    chunks:
+        by-test-platform:
+            .*-ccov.*/.*: 4
+            .*-tsan.*/.*: 8
+            default: 3
+    mozharness:
+        extra-options:
+            by-test-platform:
+                android-em-7.*:
+                    - --test-type=wdspec
+                    - --setpref=gfx.canvas.accelerated=false
+                default:
+                    - --test-type=wdspec
+    variants:
+        - no-fission
+        - webrender-sw+no-fission
+        - webrender-sw
+        - headless
+    run-on-projects:
+        by-variant:
+            webrender-sw+no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            webrender-sw:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: []
+                    .*-32.*/.*: []
+                    linux.*64-qr/debug: built-projects
+                    windows.*-qr/debug: built-projects
+                    default: []
+            headless:
+                by-test-platform:
+                    android.*: []
+                    .*wayland.*: []
+                    default: built-projects
+            no-fission:
+                by-test-platform:
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    android.*: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*wayland.*: []
+                    default: built-projects
+    tier: default
+    fetches:
+        toolchain:
+            by-test-platform:
+                android-em-7.*:
+                    - android-system-image-x86_64-linux
+                    - android-avd-x86_64-linux
+                    - android-emulator-linux
+                    - linux64-geckodriver
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+                linux.*64.*:
+                    - linux64-geckodriver
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+                linux.*32.*:
+                    - linux32-geckodriver
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+                macosx.*:
+                    - macosx64-geckodriver
+                    - macosx64-minidump-stackwalk
+                    - macosx64-fix-stacks
+                win.*-32.*:
+                    - win32-geckodriver
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                win.*-64.*:
+                    - win64-geckodriver
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                default:
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+                    - linux64-geckodriver
+
+web-platform-tests-crashtest:
+    description: "Web platform crashtests run"
+    schedules-component: web-platform-tests-crashtest
+    treeherder-symbol: W(Wc)
+    chunks: 1
+    mozharness:
+        extra-options:
+            - --test-type=crashtest
+    variants:
+        - no-fission
+        - webrender-sw
+        - webrender-sw+no-fission
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    .*-32.*/.*: []
+                    linux.*64-qr/debug: built-projects
+                    macosx101.*64-qr/debug: built-projects
+                    windows.*-qr/debug: built-projects
+                    default: []
+            webrender-sw+no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    android.*: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    default: built-projects
+    tier: default
+
+web-platform-tests-print-reftest:
+    description: "Web platform print-reftest run"
+    schedules-component: web-platform-tests-print-reftest
+    treeherder-symbol: W(Wp)
+    chunks: 1
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    tier: default
+    variants:
+        - no-fission
+        - webrender-sw
+        - webrender-sw+no-fission
+    run-on-projects:
+        by-variant:
+            webrender-sw:
+                by-test-platform:
+                    android.*: []
+                    .*-32.*/.*: []
+                    linux.*64-qr/debug: built-projects
+                    windows.*-qr/debug: built-projects
+                    default: []
+            webrender-sw+no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    default: []
+            no-fission:
+                by-test-platform:
+                    linux1804-64-qr/debug: ['trunk']
+                    linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
+                    android.*: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*wayland.*: []
+                    default: built-projects
+    mozharness:
+        extra-options:
+            - --test-type=print-reftest
+
+test-verify-wpt:
+    description: "Extra verification of web-platform tests modified on this push"
+    suite:
+        category: test-verify
+        name: test-verify-wpt
+    treeherder-symbol: TVw
+    max-run-time: 10800
+    run-on-projects:
+        by-test-platform:
+            # do not run on asan, ccov, shippable or wayland
+            .*-(asan|ccov|shippable|wayland).*/.*: []
+            # do not run on beta or release: usually just confirms earlier results
+            default: ['integration']
+    built-projects-only: true
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    optimization:
+        test-verify: ["test-verify-wpt"]
+    tier: 2
+    mozharness:
+        extra-options:
+            - --verify
+
+test-coverage-wpt:
+    description: "Per web-platform test coverage"
+    suite:
+        category: test-coverage
+        name: test-coverage-wpt
+    schedules-component: test-coverage-wpt
+    treeherder-symbol: TCw
+    max-run-time: 10800
+    variants:
+        - no-fission
+        - webrender-sw+no-fission
+    run-on-projects:
+        by-variant:
+            webrender-sw+no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    .*-ccov.*/.*: built-projects
+                    default: []
+    test-manifest-loader: null  # don't load tests in the taskgraph
+    tier: 2
+    mozharness:
+        extra-options:
+            - --per-test-coverage
diff --git a/taskcluster/ci/test/xpcshell.yml b/taskcluster/ci/test/xpcshell.yml
new file mode 100644
index 0000000000..46ecd690e5
--- /dev/null
+++ b/taskcluster/ci/test/xpcshell.yml
@@ -0,0 +1,177 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    suite:
+        category: xpcshell
+        name:
+            by-variant:
+                msix: xpcshell-msix
+                default: xpcshell
+    target:
+        by-test-platform:
+            android-em-7.*: geckoview-test_runner.apk
+            windows11-64-2009.*:
+                by-variant:
+                    msix: target.installer.msix
+                    default: null
+            default: null
+    mozharness:
+        script:
+            by-test-platform:
+                android-em.*: android_emulator_unittest.py
+                default: desktop_unittest.py
+        config:
+            by-test-platform:
+                android-em-7.*:
+                    - android/android_common.py
+                    - android/android-x86_64.py
+                linux.*:
+                    - unittests/linux_unittest.py
+                    - remove_executables.py
+                macosx.*:
+                    - unittests/mac_unittest.py
+                windows.*:
+                    - unittests/win_unittest.py
+        requires-signed-builds:
+            by-test-platform:
+                macosx1100.*: true
+                windows.*-asan-qr/opt: false    # No XPCShell on ASAN yet
+                windows.*-mingwclang-qr/.*: false
+                windows.*: true
+                default: false
+
+xpcshell:
+    description: "xpcshell test run"
+    treeherder-symbol: X(X)
+    variants:
+        - conditioned_profile
+        - socketprocess_networking+no-fission
+        - socketprocess_networking
+        - no-fission
+        - msix
+    run-on-projects:
+        by-variant:
+            conditioned_profile:
+                by-test-platform:
+                    .*asan.*: []
+                    .*ccov.*: []
+                    (linux1804-64|windows11-64.*)(-shippable)?-qr/opt: ['trunk']
+                    default: []
+            socketprocess_networking+no-fission:
+                by-test-platform:
+                    linux1804-64.*: ['trunk']
+                    default: []
+            socketprocess_networking:
+                by-test-platform:
+                    (linux1804-64|macosx).*: ['trunk']  # All Linux & Mac variants
+                    ^(?!.*asan).*windows11.*: ['trunk']   # All Windows11 except ASAN
+                    default: []
+            no-fission:
+                by-test-platform:
+                    android-em-7.0-x86_64-qr/debug-isolated-process: []
+                    android.*: built-projects
+                    linux1804-64.*: ['trunk']
+                    default: []
+            msix:
+                by-test-platform:
+                    windows11-64-2009(-shippable)?-qr/opt: built-projects
+                    windows11-64-2009-qr/debug: built-projects
+                    default: []
+            default:
+                by-test-platform:
+                    android.*: []
+                    .*wayland.*: []
+                    windows.*-asan-qr/opt: []  # No XPCShell on ASAN yet
+                    default: built-projects
+    chunks:
+        by-test-platform:
+            .*-asan-qr/opt: 4
+            .*-ccov.*/.*: 8
+            .*-tsan-qr/opt: 8
+            (android-em-7.*|macosx.*|linux1804-64.*/opt): 2
+            default: 4
+    max-run-time:
+        by-variant:
+            msix: 7200
+            conditioned_profile: 7200
+            default:
+                by-test-platform:
+                    .*-ccov(-qr)?/.*: 7200
+                    .*-tsan-qr/opt: 7200
+                    default: 5400
+    allow-software-gl-layers: false
+    tier:
+        by-test-platform:
+            windows.*-asan.*: 3
+            android-em-7.0-x86_64-qr/debug-isolated-process: 3
+            default: default
+    mozharness:
+        extra-options:
+            by-test-platform:
+                windows1.*:
+                    - --threads=2
+                default: []
+    fetches:
+        toolchain:
+            by-test-platform:
+                linux.*:
+                    - linux64-node
+                    - linux64-minidump-stackwalk
+                    - linux64-fix-stacks
+                macosx.*:
+                    - macosx64-node
+                    - macosx64-minidump-stackwalk
+                    - macosx64-fix-stacks
+                win.*-64.*:
+                    - win64-node
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                win.*32.*:
+                    - win32-node
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
+                android-em-7.*:
+                    - android-system-image-x86_64-linux
+                    - android-avd-x86_64-linux
+                    - android-emulator-linux
+                    - linux64-node
+                    - linux64-minidump-stackwalk
+
+xpcshell-failures:
+    description: "xpcshell specific failures test run"
+    treeherder-symbol: X-f(X)
+    run-on-projects: ["mozilla-central"]
+    chunks: 2
+    max-run-time: 2700
+    allow-software-gl-layers: false
+    tier: 3
+    mozharness:
+        script:
+            by-test-platform:
+                macos.*: mac_unittest.py
+                windows1.*: desktop_unittest.py
+        config:
+            by-test-platform:
+                macos.*:
+                    - unittests/mac_unittest.py
+                windows1.*:
+                    - unittests/win_unittest.py
+        extra-options:
+            by-test-platform:
+                macosx1100.*:
+                    - --run-failures=apple_silicon
+                    - --timeout-as-pass
+                    - --crash-as-pass
+    fetches:
+        toolchain:
+            by-test-platform:
+                macosx.*:
+                    - macosx64-node
+                    - macosx64-minidump-stackwalk
+                    - macosx64-fix-stacks
+                win.*32.*:
+                    - win32-node
+                    - win32-minidump-stackwalk
+                    - win32-fix-stacks
diff --git a/taskcluster/ci/toolchain/android.yml b/taskcluster/ci/toolchain/android.yml
new file mode 100644
index 0000000000..ed8cef3dc1
--- /dev/null
+++ b/taskcluster/ci/toolchain/android.yml
@@ -0,0 +1,244 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-linux-gcp
+    worker:
+        docker-image: {in-tree: android-build}
+        max-run-time: 1800
+
+# In automation, we generate the AVD using the linux64-android-avd jobs. On
+# developers' machines, bootstrap will download the artifact from the avd job
+# instead of generating it.
+#
+# The Android AVD needs the corresponding system image generated in the
+# linux64-android-system-image TL job. System images are not redistributable,
+# so locally bootstrap will use sdkmanager to download the corresponding system
+# images.
+linux64-android-avd-x86_64-repack:
+    attributes:
+        local-toolchain: true
+    description: "Android AVD (Linux) repack toolchain build"
+    treeherder:
+        symbol: TL(avd-x86_64-linux)
+    run:
+        script: repack-android-avd-linux.sh
+        arguments:
+            - 'python/mozboot/mozboot/android-avds/x86_64.json'
+        resources:
+            - 'python/mozboot/**/*android*'
+        toolchain-artifact: public/build/android-avd-linux.tar.zst
+        toolchain-alias: android-avd-x86_64-linux
+    fetches:
+        toolchain:
+            # Aliases aren't allowed for toolchains depending on toolchains.
+            - linux64-jdk-repack
+
+linux64-android31-avd-x86_64-repack:
+    description: "Android AVD (Linux) repack toolchain build"
+    treeherder:
+        symbol: TL(avd31-x86_64-linux)
+    worker-type: b-linux-kvm-gcp
+    worker:
+        kvm: true
+    run:
+        script: repack-android-avd-linux.sh
+        arguments:
+            - 'python/mozboot/mozboot/android-avds/android31-x86_64.json'
+        resources:
+            - 'python/mozboot/**/*android*'
+        toolchain-artifact: public/build/android-avd-linux.tar.zst
+        toolchain-alias: android31-avd-x86_64-linux
+    fetches:
+        toolchain:
+            # Aliases aren't allowed for toolchains depending on toolchains.
+            - linux64-jdk-repack
+
+
+linux64-android-avd-arm-repack:
+    attributes:
+        local-toolchain: true
+    description: "Android AVD (Linux) repack toolchain build"
+    treeherder:
+        symbol: TL(avd-arm-linux)
+    run:
+        script: repack-android-avd-linux.sh
+        arguments:
+            - 'python/mozboot/mozboot/android-avds/arm.json'
+        resources:
+            - 'python/mozboot/**/*android*'
+        toolchain-artifact: public/build/android-avd-linux.tar.zst
+        toolchain-alias: android-avd-arm-linux
+    fetches:
+        toolchain:
+            # Aliases aren't allowed for toolchains depending on toolchains.
+            - linux64-jdk-repack
+
+linux64-android-avd-arm64-repack:
+    attributes:
+        local-toolchain: true
+    description: "Android AVD (Linux) repack toolchain build"
+    treeherder:
+        symbol: TL(avd-arm64-linux)
+    run:
+        script: repack-android-avd-linux.sh
+        arguments:
+            - 'python/mozboot/mozboot/android-avds/arm64.json'
+        resources:
+            - 'python/mozboot/**/*android*'
+        toolchain-artifact: public/build/android-avd-linux.tar.zst
+        toolchain-alias: android-avd-arm64-linux
+    fetches:
+        toolchain:
+            # Aliases aren't allowed for toolchains depending on toolchains.
+            - linux64-jdk-repack
+
+linux64-android-system-image-x86_64-repack:
+    description: "Android System Images (Linux) repack toolchain build"
+    treeherder:
+        symbol: TL(x86_64-avd-img-linux)
+    run:
+        script: repack-android-system-images-linux.sh
+        arguments:
+            - 'python/mozboot/mozboot/android-avds/x86_64.json'
+        resources:
+            - 'python/mozboot/**/*android*'
+        toolchain-artifact: project/gecko/android-system-images/android-system-images-linux.tar.zst
+        toolchain-alias: android-system-image-x86_64-linux
+    fetches:
+        toolchain:
+            # Aliases aren't allowed for toolchains depending on toolchains.
+            - linux64-jdk-repack
+
+linux64-android31-system-image-x86_64-repack:
+    description: "Android System Images (Linux) repack toolchain build"
+    treeherder:
+        symbol: TL(x86_64-avd31-img-linux)
+    run:
+        script: repack-android-system-images-linux.sh
+        arguments:
+            - 'python/mozboot/mozboot/android-avds/android31-x86_64.json'
+        resources:
+            - 'python/mozboot/**/*android*'
+        toolchain-artifact: project/gecko/android-system-images/android-system-images-linux.tar.zst
+        toolchain-alias: android31-system-image-x86_64-linux
+    fetches:
+        toolchain:
+            # Aliases aren't allowed for toolchains depending on toolchains.
+            - linux64-jdk-repack
+
+
+linux64-jdk-repack:
+    description: "Java JDK (Linux) repack toolchain build"
+    treeherder:
+        symbol: TL(jdk)
+    run:
+        script: repack-jdk-linux.sh
+        resources:
+            - 'python/mozboot/**/*android*'
+        toolchain-artifact: project/gecko/jdk/jdk-linux.tar.zst
+        toolchain-alias: linux64-jdk
+        toolchain-env:
+            JAVA_HOME: "/builds/worker/fetches/jdk/jdk-17.0.9+9"
+
+linux64-android-sdk-linux-repack:
+    description: "Android SDK (Linux) repack toolchain build"
+    treeherder:
+        symbol: TL(android-sdk-linux)
+    run:
+        script: repack-android-sdk-linux.sh
+        resources:
+            - 'python/mozboot/**/*android*'
+        toolchain-artifact: project/gecko/android-sdk/android-sdk-linux.tar.zst
+        toolchain-alias: android-sdk-linux
+    fetches:
+        toolchain:
+            # Aliases aren't allowed for toolchains depending on toolchains.
+            - linux64-jdk-repack
+
+linux64-android-emulator-linux-repack:
+    description: "Android Emulator (Linux) repack toolchain build"
+    treeherder:
+        symbol: TL(android-emulator-linux)
+    run:
+        script: repack-android-emulator-linux.sh
+        resources:
+            - 'python/mozboot/**/*android*'
+        toolchain-artifact: project/gecko/android-emulator/android-emulator-linux.tar.zst
+        toolchain-alias: android-emulator-linux
+    fetches:
+        toolchain:
+            # Aliases aren't allowed for toolchains depending on toolchains.
+            - linux64-jdk-repack
+
+linux64-android-ndk-linux-repack:
+    description: "Android NDK (Linux) repack toolchain build"
+    treeherder:
+        symbol: TL(android-ndk-linux)
+    run:
+        script: repack-android-ndk-linux.sh
+        resources:
+            - 'python/mozboot/**/*android*'
+        toolchain-artifact: project/gecko/android-ndk/android-ndk.tar.zst
+        toolchain-alias: android-ndk-linux
+
+linux64-android-gradle-dependencies:
+    description: "Android Gradle dependencies toolchain task"
+    treeherder:
+        symbol: TL(gradle-dependencies)
+    worker:
+        env:
+            GRADLE_USER_HOME: "/builds/worker/workspace/build/src/mobile/android/gradle/dotgradle-online"
+    run:
+        script: android-gradle-dependencies.sh
+        sparse-profile: null
+        resources:
+            - 'taskcluster/scripts/misc/android-gradle-dependencies/**'
+            - '*.gradle'
+            - 'mobile/android/**/*.gradle'
+            - 'mobile/android/config/mozconfigs/android-arm-gradle-dependencies/**'
+            - 'mobile/android/config/mozconfigs/common*'
+            - 'mobile/android/gradle.configure'
+        toolchain-artifact: public/build/android-gradle-dependencies.tar.zst
+        toolchain-alias: android-gradle-dependencies
+    fetches:
+        fetch:
+            - sonatype-nexus
+            # Nexus needs Java 8
+            - jdk-8-linux64
+        toolchain:
+            # Aliases aren't allowed for toolchains depending on toolchains.
+            - linux64-android-sdk-linux-repack
+            - linux64-jdk-repack
+            - linux64-node
+
+linux64-android-gradle-dependencies-lite:
+    description: "Android Lite Gradle dependencies toolchain task"
+    treeherder:
+        symbol: TL(gradle-dependencies-lite)
+    worker:
+        env:
+            GRADLE_USER_HOME: "/builds/worker/workspace/build/src/mobile/android/gradle/dotgradle-online"
+    run:
+        script: android-gradle-dependencies-lite.sh
+        sparse-profile: null
+        resources:
+            - 'taskcluster/scripts/misc/android-gradle-dependencies/**'
+            - '*.gradle'
+            - 'mobile/android/**/*.gradle'
+            - 'mobile/android/config/mozconfigs/android-arm-gradle-dependencies/**'
+            - 'mobile/android/config/mozconfigs/common*'
+            - 'mobile/android/gradle.configure'
+        toolchain-artifact: public/build/android-gradle-dependencies.tar.zst
+        toolchain-alias: android-gradle-dependencies-lite
+    fetches:
+        fetch:
+            - sonatype-nexus
+            # Nexus needs Java 8
+            - jdk-8-linux64
+        toolchain:
+            # Aliases aren't allowed for toolchains depending on toolchains.
+            - linux64-android-sdk-linux-repack
+            - linux64-jdk-repack
+            - linux64-node
diff --git a/taskcluster/ci/toolchain/cargo-vet.yml b/taskcluster/ci/toolchain/cargo-vet.yml
new file mode 100644
index 0000000000..3f1cb9756a
--- /dev/null
+++ b/taskcluster/ci/toolchain/cargo-vet.yml
@@ -0,0 +1,61 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "cargo-vet toolchain build"
+    attributes:
+        local-toolchain: true
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        script: build-rust-based-toolchain.sh
+        toolchain-artifact: public/build/cargo-vet.tar.zst
+    fetches:
+        fetch:
+            - cargo-vet
+
+linux64-cargo-vet:
+    treeherder:
+        symbol: TL(cargo-vet)
+    run:
+        arguments: ['x86_64-unknown-linux-gnu', 'reqwest/native-tls-vendored']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-toolchain
+            - sysroot-x86_64-linux-gnu
+
+macosx64-cargo-vet:
+    treeherder:
+        symbol: TM(cargo-vet)
+    run:
+        arguments: ['x86_64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-macos-toolchain
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-cargo-vet:
+    treeherder:
+        symbol: TM(cargo-vet-arm64)
+    run:
+        arguments: ['aarch64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-macos-toolchain
+            - macosx64-sdk-toolchain
+
+win64-cargo-vet:
+    treeherder:
+        symbol: TW64(cargo-vet)
+    run:
+        arguments: ['x86_64-pc-windows-msvc']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows-toolchain
+            - vs-toolchain
diff --git a/taskcluster/ci/toolchain/cbindgen.yml b/taskcluster/ci/toolchain/cbindgen.yml
new file mode 100644
index 0000000000..69d34b6f3b
--- /dev/null
+++ b/taskcluster/ci/toolchain/cbindgen.yml
@@ -0,0 +1,65 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "cbindgen toolchain build"
+    attributes:
+        local-toolchain: true
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 3600
+    run:
+        script: build-rust-based-toolchain.sh
+        toolchain-artifact: public/build/cbindgen.tar.zst
+    fetches:
+        fetch:
+            # If you update this, make sure to update the minimum version in
+            # build/moz.configure/bindgen.configure as well.
+            - cbindgen-0.26.0
+
+linux64-cbindgen:
+    treeherder:
+        symbol: TL(cbindgen)
+    worker:
+        max-run-time: 1800
+    run:
+        arguments: ['x86_64-unknown-linux-gnu']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-toolchain
+            - sysroot-x86_64-linux-gnu
+
+macosx64-cbindgen:
+    treeherder:
+        symbol: TM(cbindgen)
+    run:
+        arguments: ['x86_64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-macos-toolchain
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-cbindgen:
+    treeherder:
+        symbol: TM(cbindgen-arm64)
+    run:
+        arguments: ['aarch64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-macos-toolchain
+            - macosx64-sdk-toolchain
+
+win64-cbindgen:
+    treeherder:
+        symbol: TW64(cbindgen)
+    run:
+        arguments: ['x86_64-pc-windows-msvc']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows-toolchain
+            - vs-toolchain
diff --git a/taskcluster/ci/toolchain/clang-tidy.yml b/taskcluster/ci/toolchain/clang-tidy.yml
new file mode 100644
index 0000000000..8d357e8c82
--- /dev/null
+++ b/taskcluster/ci/toolchain/clang-tidy.yml
@@ -0,0 +1,127 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "Clang-tidy build"
+    attributes:
+        local-toolchain: true
+    index:
+        product: static-analysis
+    worker-type: b-linux-large-gcp
+    worker:
+        max-run-time: 3600
+    run:
+        toolchain-artifact: public/build/clang-tidy.tar.zst
+        resources:
+            - 'build/clang-plugin/**/*.cpp'
+            - 'build/clang-plugin/**/*.h'
+            - 'build/clang-plugin/*.inc'
+            - 'build/clang-plugin/*.py'
+            - 'build/clang-plugin/*.txt'
+            - 'build/clang-plugin/moz.build'
+            - 'build/clang-plugin/Makefile.in'
+            - 'build/build-clang/build-clang.py'
+    fetches:
+        fetch:
+            - clang-17
+
+linux64-clang-tidy:
+    index:
+        job-name: linux64-clang-tidy
+    treeherder:
+        symbol: TL(clang-tidy)
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/clang-tidy-linux64.json'
+        resources:
+            - 'build/build-clang/clang-tidy-linux64.json'
+    fetches:
+        toolchain:
+            - linux64-clang-17
+            - linux64-toolchain-sysroot
+
+macosx64-clang-tidy:
+    index:
+        job-name: macosx64-clang-tidy
+    treeherder:
+        symbol: TM(clang-tidy)
+    worker-type: b-linux-large-gcp
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/clang-tidy-macosx64.json'
+            - 'build/build-clang/macosx64.json'
+        resources:
+            - 'build/build-clang/clang-tidy-macosx64.json'
+            - 'build/build-clang/macosx64.json'
+    fetches:
+        toolchain:
+            - linux64-clang-17
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-clang-tidy:
+    index:
+        job-name: macosx64-aarch64-clang-tidy
+    treeherder:
+        symbol: TM(clang-tidy-aarch64)
+    worker-type: b-linux-large-gcp
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/clang-tidy-macosx64.json'
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/macosx64-aarch64.json'
+        resources:
+            - 'build/build-clang/clang-tidy-macosx64.json'
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/macosx64-aarch64.json'
+    fetches:
+        toolchain:
+            - linux64-clang-17
+            - macosx64-sdk-toolchain
+
+win64-clang-tidy:
+    description: "Clang-tidy toolchain build"
+    index:
+        job-name: win64-clang-tidy
+    treeherder:
+        symbol: TW64(clang-tidy)
+        tier: 2
+    worker:
+        max-run-time: 7200
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/clang-tidy-win64.json'
+            - 'build/build-clang/win64.json'
+        resources:
+            - 'build/build-clang/clang-tidy-win64.json'
+            - 'build/build-clang/win64.json'
+    fetches:
+        toolchain:
+            - linux64-clang-17
+            - vs-toolchain
+
+linux64-clang-tidy-external:
+    attributes:
+        local-toolchain: false
+    index:
+        job-name: linux64-clang-tidy-external
+    treeherder:
+        symbol: TL(clang-tidy-e)
+    run:
+        toolchain-artifact: project/civet/clang-tidy.tar.zst
+        script: build-clang-tidy-external.sh
+        arguments:
+            - 'build/build-clang/clang-tidy-external-linux64.json'
+        resources:
+            - 'build/build-clang/clang-tidy-external-linux64.json'
+    run-on-projects: []
+    fetches:
+        fetch:
+            - civet-source
+        toolchain:
+            - linux64-clang-17
+            - linux64-toolchain-sysroot
diff --git a/taskcluster/ci/toolchain/clang.yml b/taskcluster/ci/toolchain/clang.yml
new file mode 100644
index 0000000000..1223afd4e5
--- /dev/null
+++ b/taskcluster/ci/toolchain/clang.yml
@@ -0,0 +1,1278 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-linux-xlarge-gcp
+    worker:
+        max-run-time: 7200
+    run:
+        resources:
+            - 'build/build-clang/build-clang.py'
+
+linux64-clang-8.0-raw:
+    description: "Clang 8.0 toolchain build"
+    treeherder:
+        symbol: TL(clang-8.0-raw)
+    worker-type: b-linux-large-gcp
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-8.0.json'
+            - 'build/build-clang/2stages.json'
+        resources:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-8.0.json'
+            - 'build/build-clang/2stages.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-8.0
+        toolchain:
+            - linux64-toolchain-sysroot
+
+linux64-clang-8.0:
+    description: "Clang 8.0 toolchain build"
+    treeherder:
+        symbol: TL(clang-8.0)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-alias: linux64-clang-base
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-clang-8.0-raw
+            - wasm32-wasi-compiler-rt-8.0
+
+linux64-clang-14-stage1:
+    description: "Clang 14 toolchain build"
+    treeherder:
+        symbol: TL(clang-14-stage1)
+    run:
+        using: toolchain-script
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-14.json'
+            - 'build/build-clang/1stage.json'
+        resources:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-14.json'
+            - 'build/build-clang/1stage.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-14
+        toolchain:
+            - linux64-toolchain-sysroot
+
+linux64-clang-14:
+    description: "Clang 14 toolchain build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(clang-14)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-clang-14-stage1
+
+macosx64-clang-14-raw:
+    description: "Clang 14 toolchain build"
+    treeherder:
+        symbol: TM(clang-14-raw)
+    worker-type: b-linux-large-gcp
+    worker:
+        max-run-time: 3600
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/clang-14.json'
+            - 'build/build-clang/1stage.json'
+        resources:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/clang-14.json'
+            - 'build/build-clang/1stage.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-14
+        toolchain:
+            - linux64-clang-14-stage1
+            - macosx64-sdk-toolchain
+
+linux64-clang-17-mingw-x86:
+    description: "MinGW-Clang 17 x86 toolchain build"
+    treeherder:
+        symbol: TMW(clang-17-x86)
+    worker-type: b-linux-gcp
+    run:
+        script: build-clang-mingw.sh
+        arguments:
+            - 'x86'
+        resources:
+            - 'taskcluster/scripts/misc/mingw-*.patch'
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: linux64-clang-mingw-x86
+        toolchain-artifact: public/build/clangmingw.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+            - mingw-w64
+            - llvm-mingw
+            - gcc-9.5.0
+        toolchain:
+            - linux64-clang-17
+
+linux64-clang-17-mingw-x64:
+    description: "MinGW-Clang 17 x64 toolchain build"
+    treeherder:
+        symbol: TMW(clang-17-x64)
+        tier: 1
+    worker-type: b-linux-gcp
+    run:
+        script: build-clang-mingw.sh
+        arguments:
+            - 'x64'
+        resources:
+            - 'taskcluster/scripts/misc/mingw-*.patch'
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: linux64-clang-mingw-x64
+        toolchain-artifact: public/build/clangmingw.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+            - mingw-w64
+            - llvm-mingw
+            - gcc-9.5.0
+        toolchain:
+            - linux64-clang-17
+
+linux64-clang-17-stage1:
+    description: "Clang 17 toolchain build"
+    treeherder:
+        symbol: TL(clang-17-stage1)
+    run:
+        using: toolchain-script
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/1stage.json'
+        resources:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/1stage.json'
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: linux64-clang-toolchain
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-toolchain-sysroot
+
+linux64-clang-17-profile:
+    description: "Clang 17 toolchain build"
+    treeherder:
+        symbol: TL(clang-17-profile)
+    run:
+        using: toolchain-script
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/skip-stage-1.json'
+            - 'build/build-clang/profile.json'
+        resources:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/skip-stage-1.json'
+            - 'build/build-clang/profile.json'
+        toolchain-artifact: public/build/merged.profdata
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - linux64-x64-compiler-rt-17
+            - linux64-toolchain-sysroot
+
+linux64-clang-17-raw:
+    description: "Clang 17 toolchain build"
+    treeherder:
+        symbol: TL(clang-17-raw)
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        resources:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - linux64-clang-17-profile
+            - linux64-toolchain-sysroot
+
+linux64-clang-17:
+    description: "Clang 17 toolchain build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(clang-17)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: linux64-clang
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - linux64-clang-17-raw
+            - android-aarch64-compiler-rt-17
+            - android-aarch64-libunwind-17
+            - android-arm-compiler-rt-17
+            - android-arm-libunwind-17
+            - android-x64-compiler-rt-17
+            - android-x64-libunwind-17
+            - android-x86-compiler-rt-17
+            - android-x86-libunwind-17
+            - linux64-aarch64-compiler-rt-17
+            - linux64-x64-compiler-rt-17
+            - linux64-x86-compiler-rt-17
+            - macosx64-aarch64-compiler-rt-17
+            - macosx64-x64-compiler-rt-17
+            - wasm32-wasi-compiler-rt-17
+            - win32-compiler-rt-17
+            - win64-compiler-rt-17
+
+macosx64-clang-17-raw:
+    description: "Clang 17 toolchain build"
+    treeherder:
+        symbol: TM(clang-17-raw)
+    worker-type: b-linux-large-gcp
+    worker:
+        max-run-time: 3600
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        resources:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - linux64-clang-17-profile
+            - macosx64-sdk-toolchain
+            - macosx64-x64-compiler-rt-17
+
+macosx64-clang-17:
+    description: "Clang 17 toolchain repack with MacOS Compiler RT libs"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TM(clang-17)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default:
+                    - macosx64-clang
+                    - macosx64-clang-toolchain
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - macosx64-clang-17-raw
+            - android-aarch64-compiler-rt-17
+            - android-aarch64-libunwind-17
+            - android-arm-compiler-rt-17
+            - android-arm-libunwind-17
+            - android-x64-compiler-rt-17
+            - android-x64-libunwind-17
+            - android-x86-compiler-rt-17
+            - android-x86-libunwind-17
+            - linux64-aarch64-compiler-rt-17
+            - linux64-x64-compiler-rt-17
+            - linux64-x86-compiler-rt-17
+            - macosx64-aarch64-compiler-rt-17
+            - macosx64-x64-compiler-rt-17
+            - wasm32-wasi-compiler-rt-17
+            - win32-compiler-rt-17
+            - win64-compiler-rt-17
+
+macosx64-aarch64-clang-17-raw:
+    description: "Clang 17 toolchain build"
+    treeherder:
+        symbol: TM(clang-17-aarch64-raw)
+    worker-type: b-linux-large-gcp
+    worker:
+        max-run-time: 3600
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/macosx64-aarch64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        resources:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/macosx64-aarch64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - linux64-clang-17-profile
+            - macosx64-sdk-toolchain
+            - macosx64-aarch64-compiler-rt-17
+
+macosx64-aarch64-clang-17:
+    description: "Clang 17 toolchain repack with MacOS Compiler RT libs"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TM(clang-17-aarch64)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: macosx64-aarch64-clang
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - macosx64-aarch64-clang-17-raw
+            - android-aarch64-compiler-rt-17
+            - android-aarch64-libunwind-17
+            - android-arm-compiler-rt-17
+            - android-arm-libunwind-17
+            - android-x64-compiler-rt-17
+            - android-x64-libunwind-17
+            - android-x86-compiler-rt-17
+            - android-x86-libunwind-17
+            - linux64-aarch64-compiler-rt-17
+            - linux64-x64-compiler-rt-17
+            - linux64-x86-compiler-rt-17
+            - macosx64-aarch64-compiler-rt-17
+            - macosx64-x64-compiler-rt-17
+            - wasm32-wasi-compiler-rt-17
+            - win32-compiler-rt-17
+            - win64-compiler-rt-17
+
+win64-clang-17-stage1:
+    description: "Clang-cl 17 toolchain build stage 1"
+    treeherder:
+        symbol: TW64(clang-17-stage1)
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/win64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/1stage.json'
+        resources:
+            - 'build/build-clang/win64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/1stage.json'
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: win64-clang-toolchain
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - vs-toolchain
+
+win64-clang-17-raw:
+    description: "Clang-cl 17 toolchain build"
+    treeherder:
+        symbol: TW64(clang-17-raw)
+    worker-type: b-win2022
+    worker:
+        max-run-time: 9000
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/win64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/skip-stage-1-win64.json'
+            - 'build/build-clang/4stages-pgo.json'
+        resources:
+            - 'build/build-clang/win64.json'
+            - 'build/build-clang/clang-17.json'
+            - 'build/build-clang/skip-stage-1-win64.json'
+            - 'build/build-clang/4stages-pgo.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+            - cmake
+            - ninja
+        toolchain:
+            - win64-clang-17-stage1
+            - win64-compiler-rt-17
+            - vs-toolchain
+
+win64-clang-17:
+    description: "Clang-cl 17 toolchain build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TW64(clang-17)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: win64-clang
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - win64-clang-17-raw
+            - android-aarch64-compiler-rt-17
+            - android-aarch64-libunwind-17
+            - android-arm-compiler-rt-17
+            - android-arm-libunwind-17
+            - android-x64-compiler-rt-17
+            - android-x64-libunwind-17
+            - android-x86-compiler-rt-17
+            - android-x86-libunwind-17
+            - linux64-aarch64-compiler-rt-17
+            - linux64-x64-compiler-rt-17
+            - linux64-x86-compiler-rt-17
+            - macosx64-aarch64-compiler-rt-17
+            - macosx64-x64-compiler-rt-17
+            - wasm32-wasi-compiler-rt-17
+            - win32-compiler-rt-17
+            - win64-compiler-rt-17
+
+linux64-clang-18-mingw-x86:
+    description: "MinGW-Clang 18 x86 toolchain build"
+    treeherder:
+        symbol: TMW(clang-18-x86)
+    worker-type: b-linux-gcp
+    run:
+        script: build-clang-mingw.sh
+        arguments:
+            - 'x86'
+        resources:
+            - 'taskcluster/scripts/misc/mingw-*.patch'
+        toolchain-artifact: public/build/clangmingw.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+            - mingw-w64
+            - llvm-mingw
+            - gcc-9.5.0
+        toolchain:
+            - linux64-clang-18
+
+linux64-clang-18-mingw-x64:
+    description: "MinGW-Clang 18 x64 toolchain build"
+    treeherder:
+        symbol: TMW(clang-18-x64)
+        tier: 1
+    worker-type: b-linux-gcp
+    run:
+        script: build-clang-mingw.sh
+        arguments:
+            - 'x64'
+        resources:
+            - 'taskcluster/scripts/misc/mingw-*.patch'
+        toolchain-artifact: public/build/clangmingw.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+            - mingw-w64
+            - llvm-mingw
+            - gcc-9.5.0
+        toolchain:
+            - linux64-clang-18
+
+linux64-clang-18-stage1:
+    description: "Clang 18 toolchain build"
+    treeherder:
+        symbol: TL(clang-18-stage1)
+    run:
+        using: toolchain-script
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/1stage.json'
+        resources:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/1stage.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-toolchain-sysroot
+
+linux64-clang-18-profile:
+    description: "Clang 18 toolchain build"
+    treeherder:
+        symbol: TL(clang-18-profile)
+    run:
+        using: toolchain-script
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/skip-stage-1.json'
+            - 'build/build-clang/profile.json'
+        resources:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/skip-stage-1.json'
+            - 'build/build-clang/profile.json'
+        toolchain-artifact: public/build/merged.profdata
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - linux64-x64-compiler-rt-18
+            - linux64-toolchain-sysroot
+
+linux64-clang-18-raw:
+    description: "Clang 18 toolchain build"
+    treeherder:
+        symbol: TL(clang-18-raw)
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        resources:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - linux64-clang-18-profile
+            - linux64-toolchain-sysroot
+
+linux64-clang-18:
+    description: "Clang 18 toolchain build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(clang-18)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - linux64-clang-18-raw
+            - android-aarch64-compiler-rt-18
+            - android-aarch64-libunwind-18
+            - android-arm-compiler-rt-18
+            - android-arm-libunwind-18
+            - android-x64-compiler-rt-18
+            - android-x64-libunwind-18
+            - android-x86-compiler-rt-18
+            - android-x86-libunwind-18
+            - linux64-aarch64-compiler-rt-18
+            - linux64-x64-compiler-rt-18
+            - linux64-x86-compiler-rt-18
+            - macosx64-aarch64-compiler-rt-18
+            - macosx64-x64-compiler-rt-18
+            - wasm32-wasi-compiler-rt-18
+            - win32-compiler-rt-18
+            - win64-compiler-rt-18
+
+macosx64-clang-18-raw:
+    description: "Clang 18 toolchain build"
+    treeherder:
+        symbol: TM(clang-18-raw)
+    worker-type: b-linux-large-gcp
+    worker:
+        max-run-time: 3600
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        resources:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - linux64-clang-18-profile
+            - macosx64-sdk-toolchain
+            - macosx64-x64-compiler-rt-18
+
+macosx64-clang-18:
+    description: "Clang 18 toolchain repack with MacOS Compiler RT libs"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TM(clang-18)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - macosx64-clang-18-raw
+            - android-aarch64-compiler-rt-18
+            - android-aarch64-libunwind-18
+            - android-arm-compiler-rt-18
+            - android-arm-libunwind-18
+            - android-x64-compiler-rt-18
+            - android-x64-libunwind-18
+            - android-x86-compiler-rt-18
+            - android-x86-libunwind-18
+            - linux64-aarch64-compiler-rt-18
+            - linux64-x64-compiler-rt-18
+            - linux64-x86-compiler-rt-18
+            - macosx64-aarch64-compiler-rt-18
+            - macosx64-x64-compiler-rt-18
+            - wasm32-wasi-compiler-rt-18
+            - win32-compiler-rt-18
+            - win64-compiler-rt-18
+
+macosx64-aarch64-clang-18-raw:
+    description: "Clang 18 toolchain build"
+    treeherder:
+        symbol: TM(clang-18-aarch64-raw)
+    worker-type: b-linux-large-gcp
+    worker:
+        max-run-time: 3600
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/macosx64-aarch64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        resources:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/macosx64-aarch64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - linux64-clang-18-profile
+            - macosx64-sdk-toolchain
+            - macosx64-aarch64-compiler-rt-18
+
+macosx64-aarch64-clang-18:
+    description: "Clang 18 toolchain repack with MacOS Compiler RT libs"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TM(clang-18-aarch64)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - macosx64-aarch64-clang-18-raw
+            - android-aarch64-compiler-rt-18
+            - android-aarch64-libunwind-18
+            - android-arm-compiler-rt-18
+            - android-arm-libunwind-18
+            - android-x64-compiler-rt-18
+            - android-x64-libunwind-18
+            - android-x86-compiler-rt-18
+            - android-x86-libunwind-18
+            - linux64-aarch64-compiler-rt-18
+            - linux64-x64-compiler-rt-18
+            - linux64-x86-compiler-rt-18
+            - macosx64-aarch64-compiler-rt-18
+            - macosx64-x64-compiler-rt-18
+            - wasm32-wasi-compiler-rt-18
+            - win32-compiler-rt-18
+            - win64-compiler-rt-18
+
+win64-clang-18-stage1:
+    description: "Clang-cl 18 toolchain build stage 1"
+    treeherder:
+        symbol: TW64(clang-18-stage1)
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/win64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/1stage.json'
+        resources:
+            - 'build/build-clang/win64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/1stage.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - vs-toolchain
+
+win64-clang-18-raw:
+    description: "Clang-cl 18 toolchain build"
+    treeherder:
+        symbol: TW64(clang-18-raw)
+    worker-type: b-win2022
+    worker:
+        max-run-time: 9000
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/win64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/skip-stage-1-win64.json'
+            - 'build/build-clang/4stages-pgo.json'
+        resources:
+            - 'build/build-clang/win64.json'
+            - 'build/build-clang/clang-18.json'
+            - 'build/build-clang/skip-stage-1-win64.json'
+            - 'build/build-clang/4stages-pgo.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+            - cmake
+            - ninja
+        toolchain:
+            - win64-clang-18-stage1
+            - win64-compiler-rt-18
+            - vs-toolchain
+
+win64-clang-18:
+    description: "Clang-cl 18 toolchain build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TW64(clang-18)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - win64-clang-18-raw
+            - android-aarch64-compiler-rt-18
+            - android-aarch64-libunwind-18
+            - android-arm-compiler-rt-18
+            - android-arm-libunwind-18
+            - android-x64-compiler-rt-18
+            - android-x64-libunwind-18
+            - android-x86-compiler-rt-18
+            - android-x86-libunwind-18
+            - linux64-aarch64-compiler-rt-18
+            - linux64-x64-compiler-rt-18
+            - linux64-x86-compiler-rt-18
+            - macosx64-aarch64-compiler-rt-18
+            - macosx64-x64-compiler-rt-18
+            - wasm32-wasi-compiler-rt-18
+            - win32-compiler-rt-18
+            - win64-compiler-rt-18
+
+linux64-clang-trunk-mingw-x86:
+    description: "MinGW-Clang trunk x86 toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TMW(clang-trunk-x86)
+    worker-type: b-linux-gcp
+    run:
+        script: build-clang-mingw.sh
+        arguments:
+            - 'x86'
+        resources:
+            - 'taskcluster/scripts/misc/mingw-*.patch'
+        toolchain-alias:
+            by-project:
+                toolchains: linux64-clang-mingw-x86
+                default: null
+        toolchain-artifact: public/build/clangmingw.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+            - mingw-w64-trunk
+            - llvm-mingw
+            - gcc-9.5.0
+        toolchain:
+            - linux64-clang-trunk
+
+linux64-clang-trunk-mingw-x64:
+    description: "MinGW-Clang trunk x64 toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TMW(clang-trunk-x64)
+        tier: 1
+    worker-type: b-linux-gcp
+    run:
+        script: build-clang-mingw.sh
+        arguments:
+            - 'x64'
+        resources:
+            - 'taskcluster/scripts/misc/mingw-*.patch'
+        toolchain-alias:
+            by-project:
+                toolchains: linux64-clang-mingw-x64
+                default: null
+        toolchain-artifact: public/build/clangmingw.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+            - mingw-w64-trunk
+            - llvm-mingw
+            - gcc-9.5.0
+        toolchain:
+            - linux64-clang-trunk
+
+linux64-clang-trunk-stage1:
+    description: "Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL(clang-trunk-stage1)
+    run:
+        using: toolchain-script
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/1stage.json'
+        resources:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/1stage.json'
+        toolchain-alias:
+            by-project:
+                toolchains: linux64-clang-toolchain
+                default: null
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-toolchain-sysroot
+
+linux64-clang-trunk-profile:
+    description: "Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL(clang-trunk-profile)
+    run:
+        using: toolchain-script
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/skip-stage-1.json'
+            - 'build/build-clang/profile.json'
+        resources:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/skip-stage-1.json'
+            - 'build/build-clang/profile.json'
+        toolchain-artifact: public/build/merged.profdata
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - linux64-x64-compiler-rt-trunk
+            - linux64-toolchain-sysroot
+
+linux64-clang-trunk-raw:
+    description: "Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL(clang-trunk-raw)
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        resources:
+            - 'build/build-clang/linux64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - linux64-clang-trunk-profile
+            - linux64-toolchain-sysroot
+
+linux64-clang-trunk:
+    description: "Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL(clang-trunk)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-alias:
+            by-project:
+                toolchains: linux64-clang
+                default: null
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - linux64-clang-trunk-raw
+            - android-aarch64-compiler-rt-trunk
+            - android-aarch64-libunwind-trunk
+            - android-arm-compiler-rt-trunk
+            - android-arm-libunwind-trunk
+            - android-x64-compiler-rt-trunk
+            - android-x64-libunwind-trunk
+            - android-x86-compiler-rt-trunk
+            - android-x86-libunwind-trunk
+            - linux64-aarch64-compiler-rt-trunk
+            - linux64-x64-compiler-rt-trunk
+            - linux64-x86-compiler-rt-trunk
+            - macosx64-aarch64-compiler-rt-trunk
+            - macosx64-x64-compiler-rt-trunk
+            - wasm32-wasi-compiler-rt-trunk
+            - win32-compiler-rt-trunk
+            - win64-compiler-rt-trunk
+
+macosx64-clang-trunk-raw:
+    description: "Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TM(clang-trunk-raw)
+    worker-type: b-linux-large-gcp
+    worker:
+        max-run-time: 3600
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        resources:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - linux64-clang-trunk-profile
+            - macosx64-sdk-toolchain
+            - macosx64-x64-compiler-rt-trunk
+
+macosx64-clang-trunk:
+    description: "Clang trunk toolchain repack with MacOS Compiler RT libs"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TM(clang-trunk)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-alias:
+            by-project:
+                toolchains:
+                    - macosx64-clang
+                    - macosx64-clang-toolchain
+                default: null
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - macosx64-clang-trunk-raw
+            - android-aarch64-compiler-rt-trunk
+            - android-aarch64-libunwind-trunk
+            - android-arm-compiler-rt-trunk
+            - android-arm-libunwind-trunk
+            - android-x64-compiler-rt-trunk
+            - android-x64-libunwind-trunk
+            - android-x86-compiler-rt-trunk
+            - android-x86-libunwind-trunk
+            - linux64-aarch64-compiler-rt-trunk
+            - linux64-x64-compiler-rt-trunk
+            - linux64-x86-compiler-rt-trunk
+            - macosx64-aarch64-compiler-rt-trunk
+            - macosx64-x64-compiler-rt-trunk
+            - wasm32-wasi-compiler-rt-trunk
+            - win32-compiler-rt-trunk
+            - win64-compiler-rt-trunk
+
+macosx64-aarch64-clang-trunk-raw:
+    description: "Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TM(clang-trunk-aarch64-raw)
+    worker-type: b-linux-large-gcp
+    worker:
+        max-run-time: 3600
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/macosx64-aarch64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        resources:
+            - 'build/build-clang/macosx64.json'
+            - 'build/build-clang/macosx64-aarch64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/skip-3-stages.json'
+            - 'build/build-clang/4stages-pgo.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - linux64-clang-trunk-profile
+            - macosx64-sdk-toolchain
+            - macosx64-aarch64-compiler-rt-trunk
+
+macosx64-aarch64-clang-trunk:
+    description: "Clang trunk toolchain repack with MacOS Compiler RT libs"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TM(clang-trunk-aarch64)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-alias:
+            by-project:
+                toolchains: macosx64-aarch64-clang
+                default: null
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - macosx64-aarch64-clang-trunk-raw
+            - android-aarch64-compiler-rt-trunk
+            - android-aarch64-libunwind-trunk
+            - android-arm-compiler-rt-trunk
+            - android-arm-libunwind-trunk
+            - android-x64-compiler-rt-trunk
+            - android-x64-libunwind-trunk
+            - android-x86-compiler-rt-trunk
+            - android-x86-libunwind-trunk
+            - linux64-aarch64-compiler-rt-trunk
+            - linux64-x64-compiler-rt-trunk
+            - linux64-x86-compiler-rt-trunk
+            - macosx64-aarch64-compiler-rt-trunk
+            - macosx64-x64-compiler-rt-trunk
+            - wasm32-wasi-compiler-rt-trunk
+            - win32-compiler-rt-trunk
+            - win64-compiler-rt-trunk
+
+win64-clang-trunk-stage1:
+    description: "Clang-cl trunk toolchain build stage 1"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TW64(clang-trunk-stage1)
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/win64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/1stage.json'
+        resources:
+            - 'build/build-clang/win64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/1stage.json'
+        toolchain-alias:
+            by-project:
+                toolchains: win64-clang-toolchain
+                default: null
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - vs-toolchain
+
+win64-clang-trunk-raw:
+    description: "Clang-cl trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TW64(clang-trunk-raw)
+    worker-type: b-win2022
+    worker:
+        max-run-time: 9000
+    run:
+        script: build-clang.sh
+        arguments:
+            - 'build/build-clang/win64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/skip-stage-1-win64.json'
+            - 'build/build-clang/4stages-pgo.json'
+        resources:
+            - 'build/build-clang/win64.json'
+            - 'build/build-clang/clang-trunk.json'
+            - 'build/build-clang/skip-stage-1-win64.json'
+            - 'build/build-clang/4stages-pgo.json'
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+            - cmake
+            - ninja
+        toolchain:
+            - win64-clang-trunk-stage1
+            - win64-compiler-rt-trunk
+            - vs-toolchain
+
+win64-clang-trunk:
+    description: "Clang-cl trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TW64(clang-trunk)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 600
+    run:
+        script: repack-clang.sh
+        toolchain-alias:
+            by-project:
+                toolchains: win64-clang
+                default: null
+        toolchain-artifact: public/build/clang.tar.zst
+    fetches:
+        toolchain:
+            - linux64-cctools-port
+            - win64-clang-trunk-raw
+            - android-aarch64-compiler-rt-trunk
+            - android-aarch64-libunwind-trunk
+            - android-arm-compiler-rt-trunk
+            - android-arm-libunwind-trunk
+            - android-x64-compiler-rt-trunk
+            - android-x64-libunwind-trunk
+            - android-x86-compiler-rt-trunk
+            - android-x86-libunwind-trunk
+            - linux64-aarch64-compiler-rt-trunk
+            - linux64-x64-compiler-rt-trunk
+            - linux64-x86-compiler-rt-trunk
+            - macosx64-aarch64-compiler-rt-trunk
+            - macosx64-x64-compiler-rt-trunk
+            - wasm32-wasi-compiler-rt-trunk
+            - win32-compiler-rt-trunk
+            - win64-compiler-rt-trunk
diff --git a/taskcluster/ci/toolchain/compiler-rt.yml b/taskcluster/ci/toolchain/compiler-rt.yml
new file mode 100644
index 0000000000..631024fbf9
--- /dev/null
+++ b/taskcluster/ci/toolchain/compiler-rt.yml
@@ -0,0 +1,705 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        using: toolchain-script
+        script: build-compiler-rt.sh
+
+wasm32-wasi-compiler-rt-8.0:
+    description: "wasm32-wasi Compiler-rt for Clang 8 toolchain build"
+    treeherder:
+        symbol: TL(wasi-crt-8)
+    worker-type: b-linux-xlarge-gcp
+    run:
+        script: build-compiler-rt-wasi.sh
+        arguments:
+            - wasi-sdk-11.patch
+        resources:
+            - taskcluster/scripts/misc/wasi-sdk-11.patch
+        toolchain-artifact: public/build/compiler-rt-wasm32-wasi.tar.zst
+    fetches:
+        fetch:
+            - clang-8.0
+            - wasi-sdk-11
+        toolchain:
+            - linux64-clang-8.0-raw
+
+android-aarch64-compiler-rt-17:
+    description: "android aarch64 Compiler-rt for Clang 17 toolchain build"
+    treeherder:
+        symbol: TA(aarch64-crt-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-aarch64-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - linux64-android-ndk-linux-repack
+
+android-arm-compiler-rt-17:
+    description: "android arm Compiler-rt for Clang 17 toolchain build"
+    treeherder:
+        symbol: TA(arm-crt-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-armv7-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - linux64-android-ndk-linux-repack
+
+android-x86-compiler-rt-17:
+    description: "android x86 Compiler-rt for Clang 17 toolchain build"
+    treeherder:
+        symbol: TA(x86-crt-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-i686-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - linux64-android-ndk-linux-repack
+
+android-x64-compiler-rt-17:
+    description: "android x64 Compiler-rt for Clang 17 toolchain build"
+    treeherder:
+        symbol: TA(x64-crt-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-x86_64-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - linux64-android-ndk-linux-repack
+
+linux64-x86-compiler-rt-17:
+    description: "Linux x86 Compiler-rt for Clang 17 toolchain build"
+    treeherder:
+        symbol: TL(x86-crt-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-i686-unknown-linux-gnu.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - sysroot-i686-linux-gnu
+
+linux64-x64-compiler-rt-17:
+    description: "Linux x64 Compiler-rt for Clang 17 toolchain build"
+    treeherder:
+        symbol: TL(x64-crt-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-x86_64-unknown-linux-gnu.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - sysroot-x86_64-linux-gnu
+
+linux64-aarch64-compiler-rt-17:
+    description: "Linux aarch64 Compiler-rt for Clang 17 toolchain build"
+    treeherder:
+        symbol: TL(aarch64-crt-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-aarch64-unknown-linux-gnu.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - sysroot-aarch64-linux-gnu
+
+macosx64-x64-compiler-rt-17:
+    description: "macOS x64 Compiler-rt for Clang 17 toolchain build"
+    treeherder:
+        symbol: TM(x64-crt-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-x86_64-apple-darwin.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-compiler-rt-17:
+    description: "macOS aarch64 Compiler-rt for Clang 17 toolchain build"
+    treeherder:
+        symbol: TM(aarch64-crt-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-aarch64-apple-darwin.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - macosx64-sdk-toolchain
+
+win32-compiler-rt-17:
+    description: "win32 x86 Compiler-rt for Clang 17 toolchain build"
+    treeherder:
+        symbol: TW32(crt-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-i686-pc-windows-msvc.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - vs-toolchain
+
+win64-compiler-rt-17:
+    description: "win64 x64 Compiler-rt for Clang 17 toolchain build"
+    treeherder:
+        symbol: TW64(crt-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-x86_64-pc-windows-msvc.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - vs-toolchain
+
+wasm32-wasi-compiler-rt-17:
+    description: "wasm32-wasi Compiler-rt for Clang 17 toolchain build"
+    treeherder:
+        symbol: TL(wasi-crt-17)
+    worker-type: b-linux-xlarge-gcp
+    run:
+        script: build-compiler-rt-wasi.sh
+        arguments:
+            - wasi-sdk.patch
+        resources:
+            - taskcluster/scripts/misc/wasi-sdk.patch
+        toolchain-artifact: public/build/compiler-rt-wasm32-wasi.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+            - wasi-sdk
+        toolchain:
+            - linux64-clang-17-stage1
+
+android-aarch64-compiler-rt-18:
+    description: "android aarch64 Compiler-rt for Clang 18 toolchain build"
+    treeherder:
+        symbol: TA(aarch64-crt-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-aarch64-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - linux64-android-ndk-linux-repack
+
+android-arm-compiler-rt-18:
+    description: "android arm Compiler-rt for Clang 18 toolchain build"
+    treeherder:
+        symbol: TA(arm-crt-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-armv7-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - linux64-android-ndk-linux-repack
+
+android-x86-compiler-rt-18:
+    description: "android x86 Compiler-rt for Clang 18 toolchain build"
+    treeherder:
+        symbol: TA(x86-crt-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-i686-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - linux64-android-ndk-linux-repack
+
+android-x64-compiler-rt-18:
+    description: "android x64 Compiler-rt for Clang 18 toolchain build"
+    treeherder:
+        symbol: TA(x64-crt-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-x86_64-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - linux64-android-ndk-linux-repack
+
+linux64-x86-compiler-rt-18:
+    description: "Linux x86 Compiler-rt for Clang 18 toolchain build"
+    treeherder:
+        symbol: TL(x86-crt-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-i686-unknown-linux-gnu.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - sysroot-i686-linux-gnu
+
+linux64-x64-compiler-rt-18:
+    description: "Linux x64 Compiler-rt for Clang 18 toolchain build"
+    treeherder:
+        symbol: TL(x64-crt-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-x86_64-unknown-linux-gnu.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - sysroot-x86_64-linux-gnu
+
+linux64-aarch64-compiler-rt-18:
+    description: "Linux aarch64 Compiler-rt for Clang 18 toolchain build"
+    treeherder:
+        symbol: TL(aarch64-crt-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-aarch64-unknown-linux-gnu.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - sysroot-aarch64-linux-gnu
+
+macosx64-x64-compiler-rt-18:
+    description: "macOS x64 Compiler-rt for Clang 18 toolchain build"
+    treeherder:
+        symbol: TM(x64-crt-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-x86_64-apple-darwin.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-compiler-rt-18:
+    description: "macOS aarch64 Compiler-rt for Clang 18 toolchain build"
+    treeherder:
+        symbol: TM(aarch64-crt-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-aarch64-apple-darwin.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - macosx64-sdk-toolchain
+
+win32-compiler-rt-18:
+    description: "win32 x86 Compiler-rt for Clang 18 toolchain build"
+    treeherder:
+        symbol: TW32(crt-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-i686-pc-windows-msvc.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - vs-toolchain
+
+win64-compiler-rt-18:
+    description: "win64 x64 Compiler-rt for Clang 18 toolchain build"
+    treeherder:
+        symbol: TW64(crt-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-x86_64-pc-windows-msvc.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - vs-toolchain
+
+wasm32-wasi-compiler-rt-18:
+    description: "wasm32-wasi Compiler-rt for Clang 18 toolchain build"
+    treeherder:
+        symbol: TL(wasi-crt-18)
+    worker-type: b-linux-xlarge-gcp
+    run:
+        script: build-compiler-rt-wasi.sh
+        arguments:
+            - wasi-sdk.patch
+        resources:
+            - taskcluster/scripts/misc/wasi-sdk.patch
+        toolchain-artifact: public/build/compiler-rt-wasm32-wasi.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+            - wasi-sdk
+        toolchain:
+            - linux64-clang-18-stage1
+
+android-aarch64-compiler-rt-trunk:
+    description: "android aarch64 Compiler-rt for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TA(aarch64-crt-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-aarch64-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - linux64-android-ndk-linux-repack
+
+android-arm-compiler-rt-trunk:
+    description: "android arm Compiler-rt for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TA(arm-crt-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-armv7-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - linux64-android-ndk-linux-repack
+
+android-x86-compiler-rt-trunk:
+    description: "android x86 Compiler-rt for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TA(x86-crt-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-i686-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - linux64-android-ndk-linux-repack
+
+android-x64-compiler-rt-trunk:
+    description: "android x64 Compiler-rt for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TA(x64-crt-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-x86_64-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - linux64-android-ndk-linux-repack
+
+linux64-x86-compiler-rt-trunk:
+    description: "Linux x86 Compiler-rt for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL(x86-crt-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-i686-unknown-linux-gnu.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - sysroot-i686-linux-gnu
+
+linux64-x64-compiler-rt-trunk:
+    description: "Linux x64 Compiler-rt for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL(x64-crt-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-x86_64-unknown-linux-gnu.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - sysroot-x86_64-linux-gnu
+
+linux64-aarch64-compiler-rt-trunk:
+    description: "Linux aarch64 Compiler-rt for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL(aarch64-crt-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-aarch64-unknown-linux-gnu.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - sysroot-aarch64-linux-gnu
+
+macosx64-x64-compiler-rt-trunk:
+    description: "macOS x64 Compiler-rt for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TM(x64-crt-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-x86_64-apple-darwin.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-compiler-rt-trunk:
+    description: "macOS aarch64 Compiler-rt for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TM(aarch64-crt-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-aarch64-apple-darwin.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - macosx64-sdk-toolchain
+
+win32-compiler-rt-trunk:
+    description: "win32 x86 Compiler-rt for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TW32(crt-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-i686-pc-windows-msvc.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - vs-toolchain
+
+win64-compiler-rt-trunk:
+    description: "win64 x64 Compiler-rt for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TW64(crt-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/compiler-rt-x86_64-pc-windows-msvc.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - vs-toolchain
+
+wasm32-wasi-compiler-rt-trunk:
+    description: "wasm32-wasi Compiler-rt for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL(wasi-crt-trunk)
+    worker-type: b-linux-xlarge-gcp
+    run:
+        script: build-compiler-rt-wasi.sh
+        arguments:
+            - wasi-sdk.patch
+        resources:
+            - taskcluster/scripts/misc/wasi-sdk.patch
+        toolchain-artifact: public/build/compiler-rt-wasm32-wasi.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+            - wasi-sdk
+        toolchain:
+            - linux64-clang-trunk-stage1
diff --git a/taskcluster/ci/toolchain/dist-toolchains.yml b/taskcluster/ci/toolchain/dist-toolchains.yml
new file mode 100644
index 0000000000..31b60918e6
--- /dev/null
+++ b/taskcluster/ci/toolchain/dist-toolchains.yml
@@ -0,0 +1,40 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "sccache-dist toolchain archive build"
+    attributes:
+        local-toolchain: true
+    worker-type: b-linux-gcp
+    run:
+        using: toolchain-script
+        script: build-dist-toolchains.sh
+
+clang-dist-toolchain:
+    treeherder:
+        symbol: TL(clang-dist)
+    worker:
+        max-run-time: 1800
+    run:
+        arguments: ['clang']
+        toolchain-artifact: public/build/clang-dist-toolchain.tar.xz
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-sccache
+
+rustc-dist-toolchain:
+    treeherder:
+        symbol: TL(rustc-dist)
+    worker:
+        max-run-time: 1800
+    run:
+        arguments: ['rustc']
+        toolchain-artifact: public/build/rustc-dist-toolchain.tar.xz
+    use-sccache: true
+    fetches:
+        toolchain:
+            - linux64-rust-cross
+            - linux64-sccache
diff --git a/taskcluster/ci/toolchain/dump-syms.yml b/taskcluster/ci/toolchain/dump-syms.yml
new file mode 100644
index 0000000000..95e90b5984
--- /dev/null
+++ b/taskcluster/ci/toolchain/dump-syms.yml
@@ -0,0 +1,62 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    attributes:
+        local-toolchain: true
+    description: "dump_syms toolchain build"
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        script: build-rust-based-toolchain.sh
+        toolchain-artifact: public/build/dump_syms.tar.zst
+    fetches:
+        fetch:
+            - dump-syms
+
+linux64-dump_syms:
+    treeherder:
+        symbol: TL(dump_syms)
+    run:
+        arguments: ['x86_64-unknown-linux-gnu']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-toolchain
+            - sysroot-x86_64-linux-gnu
+
+macosx64-dump_syms:
+    treeherder:
+        symbol: TM(dump_syms)
+    worker-type: b-linux-gcp
+    run:
+        arguments: ['x86_64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-rust-macos-toolchain
+            - linux64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-dump_syms:
+    treeherder:
+        symbol: TM(dump_syms-arm64)
+    run:
+        arguments: ['aarch64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-rust-macos-toolchain
+            - linux64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+win64-dump_syms:
+    treeherder:
+        symbol: TW64(dump_syms)
+    run:
+        arguments: ['x86_64-pc-windows-msvc']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows-toolchain
+            - vs-toolchain
diff --git a/taskcluster/ci/toolchain/fix-stacks.yml b/taskcluster/ci/toolchain/fix-stacks.yml
new file mode 100644
index 0000000000..e11bf0b166
--- /dev/null
+++ b/taskcluster/ci/toolchain/fix-stacks.yml
@@ -0,0 +1,72 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "fix-stacks toolchain build"
+    attributes:
+        local-toolchain: true
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        script: build-rust-based-toolchain.sh
+        toolchain-artifact: public/build/fix-stacks.tar.zst
+    fetches:
+        fetch:
+            - fix-stacks
+
+linux64-fix-stacks:
+    treeherder:
+        symbol: TL(fix-stacks)
+    run:
+        arguments: ['x86_64-unknown-linux-gnu']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-toolchain
+            - sysroot-x86_64-linux-gnu
+
+macosx64-fix-stacks:
+    treeherder:
+        symbol: TM(fix-stacks)
+    run:
+        arguments: ['x86_64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-macos-toolchain
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-fix-stacks:
+    treeherder:
+        symbol: TM(fix-stacks-arm64)
+    run:
+        arguments: ['aarch64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-macos-toolchain
+            - macosx64-sdk-toolchain
+
+win32-fix-stacks:
+    treeherder:
+        symbol: TW32(fix-stacks)
+    run:
+        arguments: ['i686-pc-windows-msvc']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows-toolchain
+            - vs-toolchain
+
+win64-fix-stacks:
+    treeherder:
+        symbol: TW64(fix-stacks)
+    run:
+        arguments: ['x86_64-pc-windows-msvc']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows-toolchain
+            - vs-toolchain
diff --git a/taskcluster/ci/toolchain/gcc.yml b/taskcluster/ci/toolchain/gcc.yml
new file mode 100644
index 0000000000..2a09c37e6c
--- /dev/null
+++ b/taskcluster/ci/toolchain/gcc.yml
@@ -0,0 +1,79 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 3600
+    run:
+        resources:
+            - 'build/unix/build-gcc/build-gcc.sh'
+        toolchain-artifact: public/build/gcc.tar.zst
+    fetches:
+        toolchain:
+            - linux64-toolchain-sysroot
+
+linux64-gcc-8:
+    description: "GCC 8 toolchain build"
+    treeherder:
+        symbol: TL(gcc8)
+    run:
+        script: build-gcc-linux.sh
+        toolchain-alias:
+            - linux64-gcc
+            - linux64-gcc-base
+    fetches:
+        fetch:
+            - gcc-8.5.0
+            - gmp-6.1.0
+            - isl-0.16.1
+            - mpc-1.0.3
+            - mpfr-3.1.4
+
+linux64-gcc-9:
+    description: "GCC 9 toolchain build"
+    treeherder:
+        symbol: TL(gcc9)
+    run:
+        script: build-gcc-linux.sh
+    fetches:
+        fetch:
+            - gcc-9.5.0
+            - gmp-6.1.0
+            - isl-0.16.1
+            - mpc-1.0.3
+            - mpfr-3.1.4
+
+linux64-gcc-11:
+    description: "GCC 11 toolchain build"
+    treeherder:
+        symbol: TL(gcc11)
+    run:
+        script: build-gcc-linux.sh
+    fetches:
+        fetch:
+            - gcc-11.4.0
+            - gmp-6.1.0
+            - isl-0.16.1
+            - mpc-1.0.3
+            - mpfr-3.1.4
+
+linux64-gcc-sixgill:
+    description: "sixgill GCC plugin build"
+    treeherder:
+        symbol: TL(sixgill)
+    run:
+        script: build-gcc-sixgill-plugin-linux.sh
+        resources:
+            - 'taskcluster/scripts/misc/build-gcc-sixgill-plugin-linux.sh'
+        toolchain-artifact: public/build/sixgill.tar.xz
+    fetches:
+        fetch:
+            - gcc-9.5.0
+            - gmp-6.1.0
+            - isl-0.16.1
+            - mpc-1.0.3
+            - mpfr-3.1.4
+        toolchain:
+            - linux64-gcc-9
diff --git a/taskcluster/ci/toolchain/geckodriver.yml b/taskcluster/ci/toolchain/geckodriver.yml
new file mode 100644
index 0000000000..252befa3fb
--- /dev/null
+++ b/taskcluster/ci/toolchain/geckodriver.yml
@@ -0,0 +1,137 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "geckodriver toolchain build"
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run-on-projects: ['trunk']
+    attributes:
+        build_type: opt
+        geckodriver: true
+        shippable: true
+        rebuild-on-release: true
+    run:
+        script: build-geckodriver.sh
+        toolchain-artifact: public/build/geckodriver.tar.gz
+        sparse-profile: null
+        resources:
+            - 'testing/geckodriver'
+            - 'testing/mozbase/rust'
+            - 'testing/webdriver'
+            # Changes to 'third_party/rust' should be captured by
+            # 'testing/geckodriver/Cargo.toml'.
+
+# For Linux platforms target "*-musl" so that the binary will be statically linked.
+
+linux32-geckodriver:
+    treeherder:
+        symbol: TL32(gd)
+        platform: linux32/opt
+    run:
+        arguments: ['i686-unknown-linux-musl']
+    attributes:
+        build_platform: linux-geckodriver
+    fetches:
+        toolchain:
+            - linux64-rust-static
+
+linux64-geckodriver:
+    treeherder:
+        symbol: TL(gd)
+        platform: linux64/opt
+    run:
+        arguments: ['x86_64-unknown-linux-musl']
+    attributes:
+        build_platform: linux64-geckodriver
+    fetches:
+        toolchain:
+            - linux64-rust-static
+
+linux64-aarch64-geckodriver:
+    treeherder:
+        symbol: TL(gd)
+        platform: linux64-aarch64/opt
+    run:
+        arguments: ['aarch64-unknown-linux-musl']
+    attributes:
+        build_platform: linux64-aarch64-geckodriver
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-static
+
+macosx64-geckodriver:
+    treeherder:
+        symbol: TM(gd)
+        platform: macosx64/opt
+    run:
+        arguments: ['x86_64-apple-darwin']
+    attributes:
+        build_platform: macosx64-geckodriver
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-macos
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-geckodriver:
+    treeherder:
+        symbol: TM(gd)
+        platform: macosx64-aarch64/opt
+    run:
+        arguments: ['aarch64-apple-darwin']
+    attributes:
+        build_platform: macosx64-aarch64-geckodriver
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-macos
+            - macosx64-sdk-toolchain
+
+win32-geckodriver:
+    treeherder:
+        symbol: TW32(gd)
+        platform: win32/opt
+    run:
+        arguments: ['i686-pc-windows-msvc']
+        toolchain-artifact: public/build/geckodriver.zip
+    attributes:
+        build_platform: win32-geckodriver
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows
+            - vs-toolchain
+
+win64-aarch64-geckodriver:
+    treeherder:
+        symbol: TW64(gd)
+        platform: windows2012-aarch64/opt
+    run:
+        arguments: ['aarch64-pc-windows-msvc']
+        toolchain-artifact: public/build/geckodriver.zip
+    attributes:
+        build_platform: win64-aarch64-geckodriver
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows
+            - vs-toolchain
+
+win64-geckodriver:
+    treeherder:
+        symbol: TW64(gd)
+        platform: win64/opt
+    run:
+        arguments: ['x86_64-pc-windows-msvc']
+        toolchain-artifact: public/build/geckodriver.zip
+    attributes:
+        build_platform: win64-geckodriver
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows
+            - vs-toolchain
diff --git a/taskcluster/ci/toolchain/gn.yml b/taskcluster/ci/toolchain/gn.yml
new file mode 100644
index 0000000000..d12b0f19c5
--- /dev/null
+++ b/taskcluster/ci/toolchain/gn.yml
@@ -0,0 +1,49 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "gn toolchain build"
+    attributes:
+        local-toolchain: true
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        resources:
+            - 'taskcluster/scripts/misc/build-gn-common.sh'
+        toolchain-artifact: public/build/gn.tar.zst
+    fetches:
+        fetch:
+            - gn
+
+linux64-gn:
+    treeherder:
+        symbol: TL(gn)
+    run:
+        script: build-gn-linux.sh
+
+macosx64-gn:
+    treeherder:
+        symbol: TM(gn)
+    run:
+        script: build-gn-macosx.sh
+        toolchain-alias: macosx64-aarch64-gn
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+win64-gn:
+    treeherder:
+        symbol: TW64(gn)
+    worker-type: b-win2022
+    worker:
+        max-run-time: 3600
+    run:
+        script: build-gn-win64.sh
+    fetches:
+        fetch:
+            - ninja
+        toolchain:
+            - vs-toolchain
diff --git a/taskcluster/ci/toolchain/grcov.yml b/taskcluster/ci/toolchain/grcov.yml
new file mode 100644
index 0000000000..15fed68732
--- /dev/null
+++ b/taskcluster/ci/toolchain/grcov.yml
@@ -0,0 +1,48 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "grcov toolchain build"
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        script: build-rust-based-toolchain.sh
+        toolchain-artifact: public/build/grcov.tar.zst
+    fetches:
+        fetch:
+            - grcov
+
+linux64-grcov:
+    treeherder:
+        symbol: TL(grcov)
+    run:
+        arguments: ['x86_64-unknown-linux-gnu']
+    fetches:
+        toolchain:
+            - linux64-rust-toolchain
+            - linux64-clang-toolchain
+            - sysroot-x86_64-linux-gnu
+
+macosx64-grcov:
+    treeherder:
+        symbol: TM(grcov)
+    run:
+        arguments: ['x86_64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-rust-macos-toolchain
+            - linux64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+win64-grcov:
+    treeherder:
+        symbol: TW64(grcov)
+    run:
+        arguments: ['x86_64-pc-windows-msvc']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows-toolchain
+            - vs-toolchain
diff --git a/taskcluster/ci/toolchain/kind.yml b/taskcluster/ci/toolchain/kind.yml
new file mode 100644
index 0000000000..d9dd52c980
--- /dev/null
+++ b/taskcluster/ci/toolchain/kind.yml
@@ -0,0 +1,54 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - fetch
+    - packages
+
+transforms:
+    - gecko_taskgraph.transforms.try_job:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.cached_tasks:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    treeherder:
+        kind: build
+        platform: toolchains/opt
+        tier: 1
+    run-on-projects: []
+    run:
+        using: toolchain-script
+
+jobs-from:
+    - android.yml
+    - cargo-vet.yml
+    - cbindgen.yml
+    - clang-tidy.yml
+    - clang.yml
+    - compiler-rt.yml
+    - dump-syms.yml
+    - fix-stacks.yml
+    - gcc.yml
+    - geckodriver.yml
+    - gn.yml
+    - grcov.yml
+    - libunwind.yml
+    - llvm-symbolizer.yml
+    - macos-sdk.yml
+    - mingw.yml
+    - minidump-stackwalk.yml
+    - misc.yml
+    - nasm.yml
+    - node.yml
+    - pkgconf.yml
+    - python.yml
+    - resourcemonitor.yml
+    - rust.yml
+    - rust-size.yml
+    - sccache.yml
+    - sysroot.yml
+    - dist-toolchains.yml
diff --git a/taskcluster/ci/toolchain/libunwind.yml b/taskcluster/ci/toolchain/libunwind.yml
new file mode 100644
index 0000000000..5a1972f3f6
--- /dev/null
+++ b/taskcluster/ci/toolchain/libunwind.yml
@@ -0,0 +1,247 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        using: toolchain-script
+        script: build-libunwind.sh
+
+android-aarch64-libunwind-17:
+    description: "android aarch64 libunwind for Clang 17 toolchain build"
+    treeherder:
+        symbol: TA(aarch64-unwind-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/libunwind-aarch64-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - android-aarch64-compiler-rt-17
+            - linux64-clang-17-stage1
+            - linux64-android-ndk-linux-repack
+
+android-arm-libunwind-17:
+    description: "android arm libunwind for Clang 17 toolchain build"
+    treeherder:
+        symbol: TA(arm-unwind-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/libunwind-armv7-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - android-arm-compiler-rt-17
+            - linux64-clang-17-stage1
+            - linux64-android-ndk-linux-repack
+
+android-x86-libunwind-17:
+    description: "android x86 libunwind for Clang 17 toolchain build"
+    treeherder:
+        symbol: TA(x86-unwind-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/libunwind-i686-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - android-x86-compiler-rt-17
+            - linux64-clang-17-stage1
+            - linux64-android-ndk-linux-repack
+
+android-x64-libunwind-17:
+    description: "android x64 libunwind for Clang 17 toolchain build"
+    treeherder:
+        symbol: TA(x64-unwind-17)
+    run:
+        arguments:
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/libunwind-x86_64-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - android-x64-compiler-rt-17
+            - linux64-clang-17-stage1
+            - linux64-android-ndk-linux-repack
+
+android-aarch64-libunwind-18:
+    description: "android aarch64 libunwind for Clang 18 toolchain build"
+    treeherder:
+        symbol: TA(aarch64-unwind-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/libunwind-aarch64-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - android-aarch64-compiler-rt-18
+            - linux64-clang-18-stage1
+            - linux64-android-ndk-linux-repack
+
+android-arm-libunwind-18:
+    description: "android arm libunwind for Clang 18 toolchain build"
+    treeherder:
+        symbol: TA(arm-unwind-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/libunwind-armv7-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - android-arm-compiler-rt-18
+            - linux64-clang-18-stage1
+            - linux64-android-ndk-linux-repack
+
+android-x86-libunwind-18:
+    description: "android x86 libunwind for Clang 18 toolchain build"
+    treeherder:
+        symbol: TA(x86-unwind-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/libunwind-i686-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - android-x86-compiler-rt-18
+            - linux64-clang-18-stage1
+            - linux64-android-ndk-linux-repack
+
+android-x64-libunwind-18:
+    description: "android x64 libunwind for Clang 18 toolchain build"
+    treeherder:
+        symbol: TA(x64-unwind-18)
+    run:
+        arguments:
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/libunwind-x86_64-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - android-x64-compiler-rt-18
+            - linux64-clang-18-stage1
+            - linux64-android-ndk-linux-repack
+
+android-aarch64-libunwind-trunk:
+    description: "android aarch64 libunwind for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TA(aarch64-unwind-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/libunwind-aarch64-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - android-aarch64-compiler-rt-trunk
+            - linux64-clang-trunk-stage1
+            - linux64-android-ndk-linux-repack
+
+android-arm-libunwind-trunk:
+    description: "android arm libunwind for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TA(arm-unwind-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/libunwind-armv7-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - android-arm-compiler-rt-trunk
+            - linux64-clang-trunk-stage1
+            - linux64-android-ndk-linux-repack
+
+android-x86-libunwind-trunk:
+    description: "android x86 libunwind for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TA(x86-unwind-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/libunwind-i686-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - android-x86-compiler-rt-trunk
+            - linux64-clang-trunk-stage1
+            - linux64-android-ndk-linux-repack
+
+android-x64-libunwind-trunk:
+    description: "android x64 libunwind for Clang trunk toolchain build"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TA(x64-unwind-trunk)
+    run:
+        arguments:
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-artifact: public/build/libunwind-x86_64-linux-android.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - android-x64-compiler-rt-trunk
+            - linux64-clang-trunk-stage1
+            - linux64-android-ndk-linux-repack
diff --git a/taskcluster/ci/toolchain/llvm-symbolizer.yml b/taskcluster/ci/toolchain/llvm-symbolizer.yml
new file mode 100644
index 0000000000..8864a81cc1
--- /dev/null
+++ b/taskcluster/ci/toolchain/llvm-symbolizer.yml
@@ -0,0 +1,331 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-linux-large-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        script: build-llvm-symbolizer.sh
+        toolchain-artifact: public/build/llvm-symbolizer.tar.zst
+
+linux32-llvm-symbolizer-17:
+    description: "llvm-symbolizer for Linux"
+    treeherder:
+        symbol: TL32(llvm-symbolizer)
+    run:
+        arguments:
+            - i686-unknown-linux-gnu
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: linux32-llvm-symbolizer
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - linux32-toolchain-sysroot
+
+linux64-llvm-symbolizer-17:
+    description: "llvm-symbolizer for Linux"
+    treeherder:
+        symbol: TL(llvm-symbolizer)
+    run:
+        arguments:
+            - x86_64-unknown-linux-gnu
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: linux64-llvm-symbolizer
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - linux64-toolchain-sysroot
+
+macosx64-llvm-symbolizer-17:
+    description: "llvm-symbolizer for macOS x64"
+    treeherder:
+        symbol: TM(llvm-symbolizer)
+    run:
+        arguments:
+            - x86_64-apple-darwin
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: macosx64-llvm-symbolizer
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-llvm-symbolizer-17:
+    description: "llvm-symbolizer for macOS aarch64"
+    treeherder:
+        symbol: TM(llvm-symbolizer-aarch64)
+    run:
+        arguments:
+            - aarch64-apple-darwin
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: macosx64-aarch64-llvm-symbolizer
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - macosx64-sdk-toolchain
+
+win64-llvm-symbolizer-17:
+    description: "llvm-symbolizer for Windows"
+    treeherder:
+        symbol: TW64(llvm-symbolizer)
+    run:
+        arguments:
+            - x86_64-pc-windows-msvc
+            - build/build-clang/clang-17.json
+        resources:
+            - build/build-clang/clang-17.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: win64-llvm-symbolizer
+    fetches:
+        fetch:
+            - clang-17
+        toolchain:
+            - linux64-clang-17-stage1
+            - vs-toolchain
+
+linux32-llvm-symbolizer-18:
+    description: "llvm-symbolizer for Linux"
+    treeherder:
+        symbol: TL32(llvm-symbolizer-18)
+    run:
+        arguments:
+            - i686-unknown-linux-gnu
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - linux32-toolchain-sysroot
+
+linux64-llvm-symbolizer-18:
+    description: "llvm-symbolizer for Linux"
+    treeherder:
+        symbol: TL(llvm-symbolizer-18)
+    run:
+        arguments:
+            - x86_64-unknown-linux-gnu
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - linux64-toolchain-sysroot
+
+macosx64-llvm-symbolizer-18:
+    description: "llvm-symbolizer for macOS x64"
+    treeherder:
+        symbol: TM(llvm-symbolizer-18)
+    run:
+        arguments:
+            - x86_64-apple-darwin
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-llvm-symbolizer-18:
+    description: "llvm-symbolizer for macOS aarch64"
+    treeherder:
+        symbol: TM(llvm-sym-aarch64-18)
+    run:
+        arguments:
+            - aarch64-apple-darwin
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - macosx64-sdk-toolchain
+
+win64-llvm-symbolizer-18:
+    description: "llvm-symbolizer for Windows"
+    treeherder:
+        symbol: TW64(llvm-symbolizer-18)
+    run:
+        arguments:
+            - x86_64-pc-windows-msvc
+            - build/build-clang/clang-18.json
+        resources:
+            - build/build-clang/clang-18.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+    fetches:
+        fetch:
+            - clang-18
+        toolchain:
+            - linux64-clang-18-stage1
+            - vs-toolchain
+
+linux32-llvm-symbolizer-trunk:
+    description: "llvm-symbolizer for Linux"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL32(llvm-symbolizer-trunk)
+    run:
+        arguments:
+            - i686-unknown-linux-gnu
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-alias:
+            by-project:
+                toolchains: linux32-llvm-symbolizer
+                default: null
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - linux32-toolchain-sysroot
+
+linux64-llvm-symbolizer-trunk:
+    description: "llvm-symbolizer for Linux"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL(llvm-symbolizer-trunk)
+    run:
+        arguments:
+            - x86_64-unknown-linux-gnu
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-alias:
+            by-project:
+                toolchains: linux64-llvm-symbolizer
+                default: null
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - linux64-toolchain-sysroot
+
+macosx64-llvm-symbolizer-trunk:
+    description: "llvm-symbolizer for macOS x64"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TM(llvm-symbolizer-trunk)
+    run:
+        arguments:
+            - x86_64-apple-darwin
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-alias:
+            by-project:
+                toolchains: macosx64-llvm-symbolizer
+                default: null
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-llvm-symbolizer-trunk:
+    description: "llvm-symbolizer for macOS aarch64"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TM(llvm-sym-aarch64-trunk)
+    run:
+        arguments:
+            - aarch64-apple-darwin
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-alias:
+            by-project:
+                toolchains: macosx64-aarch64-llvm-symbolizer
+                default: null
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - macosx64-sdk-toolchain
+
+win64-llvm-symbolizer-trunk:
+    description: "llvm-symbolizer for Windows"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TW64(llvm-symbolizer-trunk)
+    run:
+        arguments:
+            - x86_64-pc-windows-msvc
+            - build/build-clang/clang-trunk.json
+        resources:
+            - build/build-clang/clang-trunk.json
+            - taskcluster/scripts/misc/build-llvm-common.sh
+        toolchain-alias:
+            by-project:
+                toolchains: win64-llvm-symbolizer
+                default: null
+    fetches:
+        fetch:
+            - clang-trunk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - vs-toolchain
diff --git a/taskcluster/ci/toolchain/macos-sdk.yml b/taskcluster/ci/toolchain/macos-sdk.yml
new file mode 100644
index 0000000000..d3e2bc6493
--- /dev/null
+++ b/taskcluster/ci/toolchain/macos-sdk.yml
@@ -0,0 +1,48 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    attributes:
+        local-toolchain: true
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+        env:
+            PATH: "/usr/local/bin:/bin:/sbin:/usr/bin:/usr/sbin"
+    run:
+        script: unpack-sdk.py
+        resources:
+            - python/mozbuild/mozpack/macpkg.py
+            - taskcluster/scripts/misc/unpack-sdk.py
+        tooltool-downloads: internal
+    # Expiry similar to that of fetches
+    expires-after: 1000 years
+
+macosx64-sdk-13.3:
+    description: "MacOSX13.3 SDK"
+    treeherder:
+        symbol: TM(sdk13.3)
+    run:
+        arguments:
+            - https://swcdn.apple.com/content/downloads/15/62/032-84673-A_7A1TG1RF8Z/xpc8q44ggn2pkn82iwr0fi1zeb9cxi8ath/CLTools_macOSNMOS_SDK.pkg
+            - 8de3306508dca31040b3b49ff370e96c94f4546bcf22cb4069abbb18e2d6bce8e20d40a6903f00ae75558175b624a979ea0444f54bc6d9d67e841f2000b0d863
+            - Library/Developer/CommandLineTools/SDKs/MacOSX13.3.sdk
+        toolchain-artifact: project/gecko/mac-sdk/MacOSX13.3.sdk.tar.zst
+        toolchain-alias:
+            - MacOSX13.3.sdk
+
+macosx64-sdk-14.2:
+    description: "MacOSX14.2 SDK"
+    treeherder:
+        symbol: TM(sdk14.2)
+    run:
+        arguments:
+            - https://swcdn.apple.com/content/downloads/35/47/042-23550-A_M34N50O9N3/sua6ev7bjcexvorh4709vsgk64zgvsl42p/CLTools_macOSNMOS_SDK.pkg
+            - 22ce0acc9ab5c28845218b8c686d0208d6bf66bef64a369d3c0622247ba1258b438c9e44c64bb2bacf5e99eb398a6e7a337f2730cd4a969a7f0d2d5d3107306a
+            - Library/Developer/CommandLineTools/SDKs/MacOSX14.2.sdk
+        toolchain-artifact: project/gecko/mac-sdk/MacOSX14.2.sdk.tar.zst
+        toolchain-alias:
+            - macosx64-sdk
+            - macosx64-sdk-toolchain
+            - MacOSX14.2.sdk
diff --git a/taskcluster/ci/toolchain/mingw.yml b/taskcluster/ci/toolchain/mingw.yml
new file mode 100644
index 0000000000..a14413669f
--- /dev/null
+++ b/taskcluster/ci/toolchain/mingw.yml
@@ -0,0 +1,42 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    treeherder:
+        tier: 2
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 3600
+
+linux64-mingw32-nsis:
+    description: "NSIS build for MinGW32 Cross Compile"
+    treeherder:
+        symbol: TMW(mingw32-nsis)
+    run:
+        script: build-mingw32-nsis.sh
+        toolchain-artifact: public/build/nsis.tar.zst
+    fetches:
+        fetch:
+            - nsis-3.07
+            - zlib-1.3.1
+        toolchain:
+            - linux64-binutils
+            - linux64-clang-mingw-x86
+            - sysroot-x86_64-linux-gnu
+
+linux64-mingw-fxc2-x86:
+    description: "fxc2.exe x86 build for MinGW Cross Compile"
+    treeherder:
+        symbol: TMW(mingw-fxc2-x86)
+    worker:
+        max-run-time: 1800
+    run:
+        using: toolchain-script
+        script: build-mingw-fxc2-x86.sh
+        toolchain-artifact: public/build/fxc2.tar.zst
+    fetches:
+        fetch:
+            - fxc2
+        toolchain:
+            - linux64-clang-mingw-x86
diff --git a/taskcluster/ci/toolchain/minidump-stackwalk.yml b/taskcluster/ci/toolchain/minidump-stackwalk.yml
new file mode 100644
index 0000000000..f0f9b3e70c
--- /dev/null
+++ b/taskcluster/ci/toolchain/minidump-stackwalk.yml
@@ -0,0 +1,96 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "minidump-stackwalk toolchain build"
+    attributes:
+        local-toolchain: true
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+        env:
+            FETCH: rust-minidump/minidump-stackwalk
+    run:
+        script: build-rust-based-toolchain.sh
+        toolchain-artifact: public/build/minidump-stackwalk.tar.zst
+    fetches:
+        fetch:
+            - rust-minidump
+
+linux64-minidump-stackwalk:
+    treeherder:
+        symbol: TL(stackwalk)
+    run:
+        arguments: ['x86_64-unknown-linux-gnu']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-toolchain
+            - sysroot-x86_64-linux-gnu
+
+macosx64-minidump-stackwalk:
+    treeherder:
+        symbol: TM(stackwalk)
+    run:
+        arguments: ['x86_64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-rust-macos-toolchain
+            - linux64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-minidump-stackwalk:
+    treeherder:
+        symbol: TM(stackwalk-arm64)
+    run:
+        arguments: ['aarch64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-rust-macos-toolchain
+            - linux64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+win32-minidump-stackwalk:
+    treeherder:
+        symbol: TW32(stackwalk)
+    run:
+        arguments: ['i686-pc-windows-msvc']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows-toolchain
+            - vs-toolchain
+
+win64-minidump-stackwalk:
+    treeherder:
+        symbol: TW64(stackwalk)
+    run:
+        arguments: ['x86_64-pc-windows-msvc']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows-toolchain
+            - vs-toolchain
+
+# This is a totally different thing but it used to share common code with
+# minidump-stackwalk, so it lives here for historical reasons.
+linux64-breakpad-injector:
+    description: "breakpad injector toolchain build"
+    run:
+        script: build-breakpad-injector.sh
+        toolchain-artifact: public/build/injector.tar.zst
+        sparse-profile: null
+        resources:
+            - 'build/moz.configure'
+            - 'config/external/zlib'
+            - 'moz.configure'
+            - 'toolkit/crashreporter'
+            - 'toolkit/crashreporter/google-breakpad/src/processor'
+            - 'tools/crashreporter/'
+    treeherder:
+        symbol: TL(injector)
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-toolchain-sysroot
diff --git a/taskcluster/ci/toolchain/misc.yml b/taskcluster/ci/toolchain/misc.yml
new file mode 100644
index 0000000000..f19201bc1e
--- /dev/null
+++ b/taskcluster/ci/toolchain/misc.yml
@@ -0,0 +1,605 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+
+linux64-binutils-2.31.1:
+    description: "Binutils toolchain build"
+    treeherder:
+        symbol: TL(binutil2.31)
+    run:
+        script: build-binutils-linux.sh
+        resources:
+            - 'build/unix/build-binutils/build-binutils.sh'
+        toolchain-artifact: public/build/binutils.tar.zst
+    fetches:
+        fetch:
+            - binutils-2.31.1
+        toolchain:
+            # C++ code in gold doesn't compile with recent versions of GCC.
+            - linux64-gcc-8
+            - linux64-toolchain-sysroot
+
+linux64-binutils:
+    description: "Binutils toolchain build"
+    treeherder:
+        symbol: TL(binutil)
+    run:
+        script: build-binutils-linux.sh
+        resources:
+            - 'build/unix/build-binutils/build-binutils.sh'
+        toolchain-artifact: public/build/binutils.tar.zst
+    fetches:
+        fetch:
+            - binutils-2.41
+        toolchain:
+            - linux64-toolchain-sysroot
+
+linux64-cctools-port:
+    description: "cctools-port toolchain build"
+    treeherder:
+        symbol: TL(cctools-clang)
+    run:
+        script: build-cctools-port.sh
+        toolchain-artifact: public/build/cctools.tar.zst
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-toolchain-sysroot
+        fetch:
+            - cctools-port
+            - libtapi
+            - ldid
+
+linux64-hfsplus:
+    description: "hfsplus toolchain build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(hfs+)
+    run:
+        script: build-hfsplus-linux.sh
+        resources:
+            - 'build/unix/build-hfsplus/build-hfsplus.sh'
+        toolchain-artifact: public/build/hfsplus.tar.zst
+    fetches:
+        fetch:
+            - hfsplus-tools
+        toolchain:
+            - linux64-clang-toolchain
+
+linux64-libdmg:
+    description: "libdmg-hfsplus toolchain build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(libdmg-hfs+)
+    run:
+        script: build-dmg-hfsplus.sh
+        toolchain-artifact: public/build/dmg.tar.zst
+        toolchain-alias: linux64-dmg
+    fetches:
+        fetch:
+            - libdmg-hfsplus
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-toolchain-sysroot
+
+linux64-mkbom:
+    description: "mkbom toolchain build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(mkbom)
+    run:
+        script: build-mkbom-linux.sh
+        toolchain-artifact: public/build/mkbom.tar.zst
+    fetches:
+        fetch:
+            - bomutils
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-toolchain-sysroot
+
+linux64-xar:
+    description: "xar toolchain build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(xar)
+    run:
+        script: build-xar-linux.sh
+        toolchain-artifact: public/build/xar.tar.zst
+    fetches:
+        fetch:
+            - xar
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-toolchain-sysroot
+
+linux64-mar-tools:
+    description: "mar-tools toolchain build"
+    treeherder:
+        symbol: TL(mar-tools)
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+    run:
+        script: build-mar-tools.sh
+        sparse-profile: null
+        toolchain-artifact: public/build/mar-tools.tar.zst
+        resources:
+            - build/moz.configure
+            - modules/libmar/
+            - moz.configure
+            - other-licenses/bsdiff/
+            - other-licenses/nsis/Contrib/CityHash/cityhash/
+            - toolkit/mozapps/update/updater/bspatch/
+            - tools/update-packaging/
+
+linux64-upx:
+    description: "UPX build"
+    treeherder:
+        symbol: TL(upx)
+        tier: 1
+    run:
+        script: build-upx.sh
+        toolchain-artifact: public/build/upx.tar.zst
+
+linux64-msix-packaging:
+    description: "msix-packaging build"
+    treeherder:
+        symbol: TL(msix-packaging)
+        tier: 1
+    run:
+        script: build-msix-packaging.sh
+        toolchain-artifact: public/build/msix-packaging.tar.zst
+    fetches:
+        fetch:
+            - msix-packaging
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-toolchain-sysroot
+
+linux64-custom-v8:
+    description: "Custom v8 build"
+    treeherder:
+        symbol: TL(custom-v8)
+    worker:
+        docker-image: {in-tree: custom-v8}
+        max-run-time: 3600
+    run:
+        script: build-custom-v8.sh
+        arguments: [
+            d8.tar.zst,
+            is_debug=false,
+            target_cpu="x64"
+        ]
+        toolchain-artifact: public/build/d8.tar.zst
+
+macosx64-xz:
+    description: "xz development library"
+    worker-type: b-osx-1015
+    treeherder:
+        symbol: TM(xz)
+    worker:
+        max-run-time: 30000
+    run:
+        script: build-xz.sh
+        toolchain-artifact: public/build/xz.tar.zst
+    fetches:
+        fetch:
+            - xz-5.4.4
+        toolchain:
+            - macosx64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+macosx64-custom-car:
+    description: "Custom chromium-as-release build for mac"
+    worker-type: b-osx-1015
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TM(custom-car)
+    worker:
+        max-run-time: 35000
+    use-system-python: false
+    run-on-projects: []
+    run:
+        script: build-custom-car.sh
+        arguments: [
+            car_macosx.tar.zst,
+            blink_symbol_level=0,
+            chrome_pgo_phase=2,
+            dcheck_always_on=false,
+            enable_nacl=false,
+            enable_resource_allowlist_generation=false,
+            is_chrome_branded=false,
+            is_clang=true,
+            is_component_build=false,
+            is_debug=false,
+            is_official_build=true,
+            symbol_level=0,
+            target_cpu="x64",
+            use_v8_context_snapshot=false,
+            v8_symbol_level=0
+        ]
+        toolchain-artifact: public/build/car_macosx.tar.zst
+    fetches:
+        toolchain:
+            - macosx64-sdk-14.2
+
+macosx-arm64-custom-car:
+    description: "Custom chromium-as-release build for mac (apple silicon)"
+    worker-type: b-osx-1015
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TM(custom-car-arm)
+        tier: 2
+    worker:
+        max-run-time: 50000
+    use-system-python: false
+    run-on-projects: []
+    run:
+        script: build-custom-car.sh
+        arguments: [
+            car_macosx_arm.tar.zst,
+            blink_symbol_level=0,
+            chrome_pgo_phase=2,
+            dcheck_always_on=false,
+            enable_nacl=false,
+            enable_resource_allowlist_generation=false,
+            is_chrome_branded=false,
+            is_clang=true,
+            is_component_build=false,
+            is_debug=false,
+            is_official_build=true,
+            symbol_level=0,
+            target_cpu="arm64",
+            use_v8_context_snapshot=false,
+            v8_symbol_level=0
+        ]
+        toolchain-artifact: public/build/car_macosx_arm.tar.zst
+    fetches:
+        toolchain:
+            - macosx64-sdk-14.2
+
+android-custom-car:
+    description: "Custom chromium-as-release build for Android"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL(custom-car-android)
+    worker:
+        docker-image: {in-tree: custom-car-android}
+        max-run-time: 20000
+    use-system-python: false
+    run-on-projects: []
+    run:
+        script: build-custom-car.sh
+        arguments: [
+            car_android.tar.zst,
+            blink_symbol_level=0,
+            chrome_pgo_phase=2,
+            dcheck_always_on=false,
+            enable_nacl=false,
+            enable_resource_allowlist_generation=false,
+            is_chrome_branded=false,
+            is_clang=true,
+            is_component_build=false,
+            is_debug=false,
+            is_official_build=true,
+            symbol_level=0,
+            target_cpu="arm64",
+            target_os="android",
+            is_android=true,
+            is_high_end_android=true,
+            use_v8_context_snapshot=false,
+            v8_symbol_level=0
+        ]
+        toolchain-artifact: public/build/car_android.tar.zst
+
+linux64-custom-car:
+    description: "Custom chromium-as-release build for Linux"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL(custom-car)
+    worker:
+        docker-image: {in-tree: custom-car-linux}
+        max-run-time: 16200
+    use-system-python: false
+    run-on-projects: []
+    run:
+        script: build-custom-car.sh
+        arguments: [
+            car_linux.tar.zst,
+            blink_symbol_level=0,
+            chrome_pgo_phase=2,
+            dcheck_always_on=false,
+            enable_nacl=false,
+            enable_resource_allowlist_generation=false,
+            is_chrome_branded=false,
+            is_clang=true,
+            is_component_build=false,
+            is_debug=false,
+            is_official_build=true,
+            symbol_level=0,
+            target_cpu="x64",
+            use_v8_context_snapshot=false,
+            v8_symbol_level=0
+        ]
+        toolchain-artifact: public/build/car_linux.tar.zst
+
+win64-custom-car:
+    description: "Custom chromium-as-release build for Windows"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TW64(custom-car)
+    worker-type: b-win2022
+    worker:
+        max-run-time: 16200
+        env:
+            MSYSTEM: "MINGW64"
+    use-system-python: false
+    run-on-projects: []
+    run:
+        script: build-custom-car.sh
+        arguments: [
+            car_win64.tar.zst,
+            blink_symbol_level=0,
+            chrome_pgo_phase=2,
+            dcheck_always_on=false,
+            enable_nacl=false,
+            enable_resource_allowlist_generation=false,
+            is_chrome_branded=false,
+            is_clang=true,
+            is_component_build=false,
+            is_debug=false,
+            is_official_build=true,
+            symbol_level=0,
+            target_cpu=\"x64\",
+            use_v8_context_snapshot=false,
+            v8_symbol_level=0
+        ]
+        toolchain-artifact: public/build/car_win64.tar.zst
+    fetches:
+        toolchain:
+            - win64-vs2022
+
+browsertime:
+    description: "npm install browsertime node_modules"
+    treeherder:
+        symbol: TL(browsertime)
+    run:
+        script: browsertime.sh
+        sparse-profile: null
+        resources:
+            - 'tools/browsertime/package.json'
+            - 'tools/browsertime/package-lock.json'
+            - 'tools/browsertime/mach_commands.py'
+        toolchain-artifact: public/build/browsertime.tar.zst
+    fetches:
+        toolchain:
+            - linux64-node-16
+
+wrench-deps:
+    description: "Downloads all the crates needed for building wrench"
+    treeherder:
+        symbol: WR(wrench-deps)
+    worker:
+        docker-image: {in-tree: webrender}
+    run:
+        script: wrench-deps-vendoring.sh
+        sparse-profile: null
+        resources:
+            - 'gfx/wr/**/Cargo.toml'
+            - 'gfx/wr/Cargo.lock'
+            - 'gfx/wr/ci-scripts/install-meson.sh'
+        toolchain-artifact: public/build/wrench-deps.tar.zst
+    fetches:
+        toolchain:
+            - linux64-rust  # whatever m-c is built with
+
+linux64-wine:
+    description: "Wine build for Windows Cross Compile"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(wine)
+        tier: 1
+    worker:
+        max-run-time: 10800
+    run:
+        script: build-wine.sh
+        toolchain-artifact: public/build/wine.tar.zst
+    fetches:
+        fetch:
+            - wine
+
+linux64-winchecksec:
+    description: "winchecksec"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(winchecksec)
+    run:
+        script: build-winchecksec.sh
+        arguments: ['x86_64-unknown-linux-gnu']
+        toolchain-artifact: public/build/winchecksec.tar.zst
+        tooltool-downloads: internal
+    fetches:
+        fetch:
+            - winchecksec
+
+win64-winchecksec:
+    description: "winchecksec"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TW64(winchecksec)
+    run:
+        script: build-winchecksec.sh
+        arguments: ['x86_64-pc-windows-msvc']
+        toolchain-artifact: public/build/winchecksec.tar.zst
+        tooltool-downloads: internal
+    fetches:
+        fetch:
+            - winchecksec
+        toolchain:
+            - linux64-clang-toolchain
+            - vs-toolchain
+
+linux64-makecab:
+    description: "makecab toolchain build"
+    treeherder:
+        symbol: TL(cab)
+    worker:
+        env:
+            FETCH: rust-makecab
+    run:
+        script: build-rust-based-toolchain.sh
+        arguments: ['x86_64-unknown-linux-gnu']
+        toolchain-artifact: public/build/makecab.tar.zst
+    fetches:
+        fetch:
+            - makecab
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-toolchain
+            - sysroot-x86_64-linux-gnu
+
+win64-mozmake:
+    description: "mozmake for Windows"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TW64(mozmake)
+    run:
+        script: build-mozmake.sh
+        toolchain-artifact: public/build/mozmake.tar.zst
+    fetches:
+        fetch:
+            - gnumake
+        toolchain:
+            - linux64-clang-toolchain
+            - vs-toolchain
+
+nsis:
+    description: "NSIS for Linux and Windows"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(nsis)
+    run:
+        script: build-nsis.sh
+        toolchain-artifact: public/build/nsis.tar.zst
+    fetches:
+        fetch:
+            - nsis-3.07
+            - nsis-3.07-win
+        toolchain:
+            - linux64-clang-toolchain
+            - sysroot-x86_64-linux-gnu
+
+win64-vs2019:
+    description: "VS 2019"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TW64(msvc2019)
+    worker:
+        env:
+            MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE: system
+    run:
+        script: get_vs.py
+        arguments:
+            - build/vs/vs2019.yaml
+        resources:
+            - build/vs/vs2019.yaml
+        toolchain-artifact: project/gecko/vs/vs.tar.zst
+        toolchain-alias:
+            - vs
+            - vs-toolchain
+
+win64-vs2022:
+    description: "VS 2022"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TW64(msvc2022)
+    worker:
+        env:
+            MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE: system
+    run:
+        script: get_vs.py
+        arguments:
+            - build/vs/vs2022.yaml
+        resources:
+            - build/vs/vs2022.yaml
+        toolchain-artifact: project/gecko/vs/vs.tar.zst
+
+linux64-afl-instrumentation-4.0:
+    description: "AFL++ instrumentation toolchain build"
+    treeherder:
+        symbol: TL(afl++)
+    worker:
+        max-run-time: 3600
+    run:
+        script: build-afl.sh
+        resources:
+            - taskcluster/scripts/misc/afl-nyx.patch
+        toolchain-artifact: public/build/afl-instrumentation.tar.zst
+        toolchain-alias: linux64-afl-instrumentation
+    fetches:
+        fetch:
+            - afl-plus-plus-4.0
+        toolchain:
+            - linux64-clang
+            - linux64-toolchain-sysroot
+
+linux64-cargo-apk:
+    description: "cargo-apk toolchain build"
+    treeherder:
+        symbol: TL(cargo-apk)
+    worker:
+        env:
+            FETCH: android-ndk-rs/cargo-apk
+    run:
+        script: build-rust-based-toolchain.sh
+        arguments: ['x86_64-unknown-linux-gnu']
+        resources:
+            - taskcluster/scripts/misc/cargo-apk-Cargo.lock
+        toolchain-artifact: public/build/cargo-apk.tar.zst
+    fetches:
+        fetch:
+            - android-ndk-rs
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-toolchain
+            - sysroot-x86_64-linux-gnu
+
+windows-rs:
+    # Bootstrap cannot use fetches directly, so we have this task to
+    # expose the corresponding fetch as a toolchain artifact.
+    description: Source of the windows rust crate
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TW64(windows-rs)
+    run:
+        script: dummy.sh
+        toolchain-artifact: public/build/windows-rs.tar.zst
+    dependencies:
+        fetch-windows-rs: fetch-windows-rs
+    fetches:
+        fetch-windows-rs:
+            - artifact: windows-rs.tar.zst
+              extract: false
+              dest: ../artifacts
diff --git a/taskcluster/ci/toolchain/nasm.yml b/taskcluster/ci/toolchain/nasm.yml
new file mode 100644
index 0000000000..866aa5b0f6
--- /dev/null
+++ b/taskcluster/ci/toolchain/nasm.yml
@@ -0,0 +1,87 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        toolchain-artifact: public/build/nasm.tar.zst
+
+win64-nasm:
+    description: "nasm win64 build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TW64(nasm)
+    run:
+        script: build-nasm.sh
+        arguments: ['win64']
+    fetches:
+        fetch:
+            - nasm-2.15.05
+        toolchain:
+            - linux64-clang-mingw-x64
+
+macosx64-nasm:
+    description: "nasm macosx64 build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TM(nasm)
+    run:
+        script: build-nasm.sh
+        arguments: ['macosx64']
+    fetches:
+        fetch:
+            - nasm-2.15.05
+        toolchain:
+            - linux64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-nasm:
+    description: "nasm macosx64 build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TM(nasm-aarch64)
+    run:
+        script: build-nasm.sh
+        arguments: ['macosx64-aarch64']
+    fetches:
+        fetch:
+            - nasm-2.14.02
+        toolchain:
+            - linux64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+linux64-nasm:
+    description: "nasm linux64 build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(nasm)
+    run:
+        script: build-nasm.sh
+        arguments: ['linux64']
+    fetches:
+        fetch:
+            - nasm-2.15.05
+        toolchain:
+            - linux64-clang-toolchain
+            - sysroot-x86_64-linux-gnu
+
+linux64-nasm-2.14.02:
+    description: "nasm linux64 minimum supported version build"
+    treeherder:
+        symbol: TL(nasm-2.14.02)
+    run:
+        script: build-nasm.sh
+        arguments: ['linux64']
+    fetches:
+        fetch:
+            - nasm-2.14.02
+        toolchain:
+            - linux64-clang-toolchain
+            - sysroot-x86_64-linux-gnu
diff --git a/taskcluster/ci/toolchain/node.yml b/taskcluster/ci/toolchain/node.yml
new file mode 100644
index 0000000000..c1bc86254d
--- /dev/null
+++ b/taskcluster/ci/toolchain/node.yml
@@ -0,0 +1,114 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "Node repack toolchain build"
+    attributes:
+        local-toolchain: true
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        script: repack-node.sh
+        toolchain-artifact: public/build/node.tar.zst
+
+linux64-node-12:
+    treeherder:
+        symbol: TL(node-12)
+    fetches:
+        fetch:
+            - nodejs-12-linux64
+
+linux64-node-16:
+    treeherder:
+        symbol: TL(node-16)
+    run:
+        toolchain-alias:
+            - linux64-node
+    fetches:
+        fetch:
+            - nodejs-16-linux64
+
+linux64-node-18:
+    # The upstream prebuilt binary requires glibc 2.28, which is too recent for Ubuntu 18.04,
+    # so we build our own that won't have that requirement.
+    description: "Node toolchain build"
+    treeherder:
+        symbol: TL(node-18)
+    run:
+        script: build-nodejs.sh
+    fetches:
+        fetch:
+            - nodejs-18-source
+        toolchain:
+            - linux64-gcc-11
+            - linux64-toolchain-sysroot
+
+macosx64-node-16:
+    treeherder:
+        symbol: TM(node-16)
+    run:
+        toolchain-alias:
+            - macosx64-node
+    fetches:
+        fetch:
+            - nodejs-16-macosx64
+
+macosx64-node-18:
+    treeherder:
+        symbol: TM(node-18)
+    fetches:
+        fetch:
+            - nodejs-18-macosx64
+
+macosx64-aarch64-node-16:
+    treeherder:
+        symbol: TM(node-16-arm64)
+    run:
+        toolchain-alias:
+            - macosx64-aarch64-node
+    fetches:
+        fetch:
+            - nodejs-16-macosx64-arm64
+
+macosx64-aarch64-node-18:
+    treeherder:
+        symbol: TM(node-18-arm64)
+    fetches:
+        fetch:
+            - nodejs-18-macosx64-arm64
+
+win64-node-16:
+    treeherder:
+        symbol: TW64(node-16)
+    run:
+        toolchain-alias:
+            - win64-node
+    fetches:
+        fetch:
+            - nodejs-16-win64
+
+win64-node-18:
+    treeherder:
+        symbol: TW64(node-18)
+    fetches:
+        fetch:
+            - nodejs-18-win64
+
+win32-node-16:
+    treeherder:
+        symbol: TW32(node-16)
+    run:
+        toolchain-alias:
+            - win32-node
+    fetches:
+        fetch:
+            - nodejs-16-win32
+
+win32-node-18:
+    treeherder:
+        symbol: TW32(node-18)
+    fetches:
+        fetch:
+            - nodejs-18-win32
diff --git a/taskcluster/ci/toolchain/pkgconf.yml b/taskcluster/ci/toolchain/pkgconf.yml
new file mode 100644
index 0000000000..c97ead7acc
--- /dev/null
+++ b/taskcluster/ci/toolchain/pkgconf.yml
@@ -0,0 +1,56 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    attributes:
+        local-toolchain: true
+    description: "pkgconf toolchain build"
+    worker:
+        max-run-time: 1800
+    worker-type: b-linux-gcp
+    run:
+        script: build-pkgconf.sh
+        toolchain-artifact: public/build/pkgconf.tar.zst
+    fetches:
+        fetch:
+            - pkgconf
+
+linux64-pkgconf:
+    treeherder:
+        symbol: TL(pkgconf)
+    run:
+        arguments: ['x86_64-unknown-linux-gnu']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - sysroot-x86_64-linux-gnu
+
+macosx64-pkgconf:
+    treeherder:
+        symbol: TM(pkgconf)
+    run:
+        arguments: ['x86_64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-pkgconf:
+    treeherder:
+        symbol: TM(pkgconf-arm64)
+    run:
+        arguments: ['aarch64-apple-darwin']
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+win64-pkgconf:
+    treeherder:
+        symbol: TW64(pkgconf)
+    run:
+        arguments: ['x86_64-pc-windows-gnu']
+    fetches:
+        toolchain:
+            - linux64-clang-mingw-x64
diff --git a/taskcluster/ci/toolchain/python.yml b/taskcluster/ci/toolchain/python.yml
new file mode 100644
index 0000000000..e610ee6e4e
--- /dev/null
+++ b/taskcluster/ci/toolchain/python.yml
@@ -0,0 +1,97 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "python repack"
+    attributes:
+        local-toolchain: true
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+    run:
+        script: build-cpython.sh
+        resources:
+            - 'build/psutil_requirements.txt'
+            - 'build/zstandard_requirements.txt'
+
+linux64-python-3.8:
+    treeherder:
+        symbol: TL(python)
+    run:
+        toolchain-alias: linux64-python
+        toolchain-artifact: public/build/python.tar.zst
+    fetches:
+        fetch:
+            - cpython-3.8.10
+    worker:
+        docker-image: {in-tree: ubuntu1804-build-python}
+
+win64-python-3.8:
+    description: "cpython 3.8.10"
+    treeherder:
+        symbol: TW64(python)
+    run:
+        script: pack-cpython.sh
+        toolchain-alias: win64-python
+        toolchain-artifact: public/build/python.tar.zst
+    fetches:
+        toolchain:
+            - linux64-wine
+        fetch:
+            - cpython-3.8.10.exe
+
+macosx64-python-3.8:
+    treeherder:
+        symbol: TM(python)
+    worker-type: b-osx-1015
+    run:
+        toolchain-alias: macosx64-python
+        toolchain-artifact: public/build/python.tar.zst
+    fetches:
+        fetch:
+            - cpython-3.8.10
+        toolchain:
+            - macosx64-clang-toolchain
+            - macosx64-sdk-toolchain
+            - macosx64-xz
+
+###
+
+linux64-python-3.11:
+    treeherder:
+        symbol: TL(python3.11)
+    run:
+        toolchain-artifact: public/build/python.tar.zst
+    fetches:
+        fetch:
+            - cpython-3.11.7
+    worker:
+        docker-image: {in-tree: ubuntu1804-build-python}
+
+win64-python-3.11:
+    description: "cpython 3.11.7"
+    treeherder:
+        symbol: TW64(python3.11)
+    run:
+        script: pack-cpython.sh
+        toolchain-artifact: public/build/python.tar.zst
+    fetches:
+        toolchain:
+            - linux64-wine
+        fetch:
+            - cpython-3.11.7.exe
+
+macosx64-python-3.11:
+    treeherder:
+        symbol: TM(python3.11)
+    worker-type: b-osx-1015
+    run:
+        toolchain-artifact: public/build/python.tar.zst
+    fetches:
+        fetch:
+            - cpython-3.11.7
+        toolchain:
+            - macosx64-clang-toolchain
+            - macosx64-sdk-toolchain
+            - macosx64-xz
diff --git a/taskcluster/ci/toolchain/resourcemonitor.yml b/taskcluster/ci/toolchain/resourcemonitor.yml
new file mode 100644
index 0000000000..f4ef9a41c4
--- /dev/null
+++ b/taskcluster/ci/toolchain/resourcemonitor.yml
@@ -0,0 +1,44 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    fetches:
+        fetch:
+            - go-1.14.4
+            - resource-monitor
+    run:
+        script: build-resourcemonitor.sh
+        sparse-profile: null
+        toolchain-artifact: public/build/resource-monitor.tar.zst
+
+linux64-resource-monitor:
+    description: "linux64 resourcemonitor toolchain build"
+    treeherder:
+        symbol: TL(rs-monitor)
+    run:
+        arguments: ['linux64']
+
+macosx64-resource-monitor:
+    description: "macos64 resourcemonitor toolchain build"
+    treeherder:
+        symbol: TM(rs-monitor)
+    run:
+        arguments: ['macos64']
+
+windows32-resource-monitor:
+    description: "windows32 resourcemonitor toolchain build"
+    treeherder:
+        symbol: TW32(rs-monitor)
+    run:
+        arguments: ['windows32']
+
+windows64-resource-monitor:
+    description: "windows64 resourcemonitor toolchain build"
+    treeherder:
+        symbol: TW64(rs-monitor)
+    run:
+        arguments: ['windows64']
diff --git a/taskcluster/ci/toolchain/rust-size.yml b/taskcluster/ci/toolchain/rust-size.yml
new file mode 100644
index 0000000000..09963589a6
--- /dev/null
+++ b/taskcluster/ci/toolchain/rust-size.yml
@@ -0,0 +1,38 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "rust-size toolchain build"
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        script: build-rust-based-toolchain.sh
+    fetches:
+        fetch:
+            - rust-size
+
+linux64-rust-size:
+    treeherder:
+        symbol: TL(rust-size)
+    run:
+        arguments: ['x86_64-unknown-linux-gnu']
+        toolchain-artifact: public/build/rust-size.tar.zst
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-toolchain
+            - sysroot-x86_64-linux-gnu
+
+win64-rust-size:
+    treeherder:
+        symbol: TW64(rust-size)
+    run:
+        arguments: ['x86_64-pc-windows-msvc']
+        toolchain-artifact: public/build/rust-size.tar.zst
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows-toolchain
+            - vs-toolchain
diff --git a/taskcluster/ci/toolchain/rust.yml b/taskcluster/ci/toolchain/rust.yml
new file mode 100644
index 0000000000..050e581247
--- /dev/null
+++ b/taskcluster/ci/toolchain/rust.yml
@@ -0,0 +1,219 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "rust repack"
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 7200
+    run:
+        script: repack_rust.py
+        toolchain-artifact: public/build/rustc.tar.zst
+
+linux64-rust-1.70:
+    treeherder:
+        symbol: TL(rust-1.70)
+    run:
+        arguments: [
+            '--channel', '1.70.0',
+            '--host', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-unknown-linux-gnu',
+            '--target', 'i686-unknown-linux-gnu',
+            '--target', 'wasm32-wasi',
+        ]
+        toolchain-alias:
+            - linux64-rust-base
+            - linux64-rust-toolchain
+
+linux64-rust-1.76:
+    treeherder:
+        symbol: TL(rust)
+    run:
+        arguments: [
+            '--channel', '1.76.0',
+            '--host', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-unknown-linux-gnu',
+            '--target', 'i686-unknown-linux-gnu',
+            '--target', 'aarch64-unknown-linux-gnu',
+            '--target', 'wasm32-wasi',
+        ]
+        toolchain-alias: linux64-rust
+
+# A patched rust toolchain that allows us to use sanitizers in our vendored
+# build environment. See the rust fetch's comments for more details.
+linux64-rust-dev:
+    description: "build rust from source"
+    worker-type: b-linux-large-gcp
+    treeherder:
+        symbol: TL(rust-dev)
+    worker:
+        env:
+            # Work around https://github.com/rust-lang/rust/issues/105967
+            RUSTFLAGS_BOOTSTRAP: '-Clink-arg=-Wl,--undefined-version'
+            RUSTFLAGS_NOT_BOOTSTRAP: '-Clink-arg=-Wl,--undefined-version'
+    run:
+        arguments: [
+            '--patch', 'rust-vendor-std.patch',
+            '--patch', 'src/tools/cargo:cargo-vendor-std.patch',
+            '--channel', 'dev',
+            '--host', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-unknown-linux-gnu',
+        ]
+    fetches:
+        fetch:
+            - rust-1.76.0
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-toolchain-sysroot
+
+linux64-rust-cross-1.76:
+    description: "rust repack with macos and windows cross support"
+    treeherder:
+        symbol: TL(rust-cross)
+    run:
+        arguments: [
+            '--channel', '1.76.0',
+            '--host', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-unknown-linux-gnu',
+            '--target', 'i686-unknown-linux-gnu',
+            '--target', 'x86_64-apple-darwin',
+            '--target', 'aarch64-apple-darwin',
+            '--target', 'x86_64-pc-windows-msvc',
+            '--target', 'i686-pc-windows-msvc',
+            '--target', 'aarch64-pc-windows-msvc',
+            '--target', 'armv7-linux-androideabi',
+            '--target', 'thumbv7neon-linux-androideabi',
+            '--target', 'aarch64-linux-android',
+            '--target', 'i686-linux-android',
+            '--target', 'x86_64-linux-android',
+        ]
+        toolchain-alias: linux64-rust-cross
+
+linux64-rust-static-1.76:
+    description: "rust repack with static linking support"
+    treeherder:
+        symbol: TL(rust-static)
+    run:
+        arguments: [
+            '--channel', '1.76.0',
+            '--host', 'x86_64-unknown-linux-gnu',
+            '--target', 'aarch64-unknown-linux-musl',
+            '--target', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-unknown-linux-musl',
+            '--target', 'i686-unknown-linux-gnu',
+            '--target', 'i686-unknown-linux-musl',
+        ]
+        toolchain-alias: linux64-rust-static
+
+linux64-rust-macos-1.70:
+    description: "rust repack with macos-cross support"
+    treeherder:
+        symbol: TL(rust-macos-1.70)
+    run:
+        arguments: [
+            '--channel', '1.70.0',
+            '--host', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-apple-darwin',
+            '--target', 'aarch64-apple-darwin',
+        ]
+        toolchain-alias: linux64-rust-macos-toolchain
+
+linux64-rust-macos-1.76:
+    description: "rust repack with macos-cross support"
+    treeherder:
+        symbol: TL(rust-macos)
+    run:
+        arguments: [
+            '--channel', '1.76.0',
+            '--host', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-apple-darwin',
+            '--target', 'aarch64-apple-darwin',
+        ]
+        toolchain-alias: linux64-rust-macos
+
+linux64-rust-android-1.76:
+    description: "rust repack with android-cross support"
+    treeherder:
+        symbol: TL(rust-android)
+    run:
+        arguments: [
+            '--channel', '1.76.0',
+            '--host', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-unknown-linux-gnu',
+            '--target', 'armv7-linux-androideabi',
+            '--target', 'thumbv7neon-linux-androideabi',
+            '--target', 'aarch64-linux-android',
+            '--target', 'i686-linux-android',
+            '--target', 'x86_64-linux-android',
+        ]
+        toolchain-alias: linux64-rust-android
+
+linux64-rust-windows-1.70:
+    description: "rust repack with windows-cross support"
+    treeherder:
+        symbol: TL(rust-win-1.70)
+    run:
+        arguments: [
+            '--channel', '1.70.0',
+            '--host', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-pc-windows-msvc',
+            '--target', 'i686-pc-windows-msvc',
+        ]
+        toolchain-alias: linux64-rust-windows-toolchain
+
+linux64-rust-windows-1.76:
+    description: "rust repack with windows-cross support"
+    treeherder:
+        symbol: TL(rust-win)
+    run:
+        arguments: [
+            '--channel', '1.76.0',
+            '--host', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-pc-windows-msvc',
+            '--target', 'i686-pc-windows-msvc',
+            '--target', 'aarch64-pc-windows-msvc',
+        ]
+        toolchain-alias: linux64-rust-windows
+
+win64-rust-1.76:
+    treeherder:
+        symbol: TW64(rust)
+    run:
+        arguments: [
+            '--channel', '1.76.0',
+            '--host', 'x86_64-pc-windows-msvc',
+            '--target', 'x86_64-pc-windows-msvc',
+            '--target', 'i686-pc-windows-msvc',
+            '--target', 'aarch64-pc-windows-msvc',
+        ]
+        toolchain-alias: win64-rust
+
+macosx64-rust-1.76:
+    treeherder:
+        symbol: TM(rust)
+    run:
+        arguments: [
+            '--channel', '1.76.0',
+            '--host', 'x86_64-apple-darwin',
+            '--target', 'x86_64-apple-darwin',
+        ]
+        toolchain-alias: macosx64-rust
+
+mingw32-rust-1.76:
+    treeherder:
+        symbol: TMW(rust)
+    run:
+        arguments: [
+            '--channel', '1.76.0',
+            '--host', 'x86_64-unknown-linux-gnu',
+            '--target', 'i686-unknown-linux-gnu',
+            '--target', 'i686-pc-windows-gnu',
+            '--target', 'x86_64-pc-windows-gnu',
+            '--target', 'x86_64-unknown-linux-gnu',
+        ]
+        toolchain-alias: mingw32-rust
diff --git a/taskcluster/ci/toolchain/sccache.yml b/taskcluster/ci/toolchain/sccache.yml
new file mode 100644
index 0000000000..6fa9ab46a5
--- /dev/null
+++ b/taskcluster/ci/toolchain/sccache.yml
@@ -0,0 +1,88 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    description: "sccache toolchain build"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(sccache)
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        using: toolchain-script
+        script: build-rust-based-toolchain.sh
+        toolchain-artifact: public/build/sccache.tar.zst
+    fetches:
+        fetch:
+            - sccache
+
+linux64-sccache:
+    treeherder:
+        symbol: TL(sccache)
+    run:
+        arguments:
+            - x86_64-unknown-linux-gnu
+            - s3
+            - gcs
+            - azure
+            - dist-server
+            - openssl/vendored
+            - native-zlib
+    fetches:
+        toolchain:
+            - linux64-rust-toolchain
+            - linux64-clang-toolchain
+            - sysroot-x86_64-linux-gnu
+
+macosx64-sccache:
+    treeherder:
+        symbol: TM(sccache)
+    run:
+        arguments:
+            - x86_64-apple-darwin
+            - all
+            - native-zlib
+    fetches:
+        toolchain:
+            - linux64-rust-macos-toolchain
+            - linux64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+macosx64-aarch64-sccache:
+    treeherder:
+        symbol: TM(sccache-aarch64)
+    worker:
+        max-run-time: 1800
+    run:
+        arguments:
+            - aarch64-apple-darwin
+            - all
+            - native-zlib
+    fetches:
+        toolchain:
+            - linux64-rust-macos-toolchain
+            - linux64-clang-toolchain
+            - macosx64-sdk-toolchain
+
+win64-sccache:
+    treeherder:
+        symbol: TW64(sccache)
+    worker:
+        env:
+            # Blake3 assembly can't be cross-compiled. The intrinsics version should be good enough.
+            CARGO_FEATURE_PREFER_INTRINSICS: '1'
+    run:
+        arguments:
+            - x86_64-pc-windows-msvc
+            - dist-client
+            - s3
+            - gcs
+            - native-zlib
+    fetches:
+        toolchain:
+            - linux64-clang-toolchain
+            - linux64-rust-windows-toolchain
+            - vs-toolchain
diff --git a/taskcluster/ci/toolchain/sysroot.yml b/taskcluster/ci/toolchain/sysroot.yml
new file mode 100644
index 0000000000..e4479d16e0
--- /dev/null
+++ b/taskcluster/ci/toolchain/sysroot.yml
@@ -0,0 +1,206 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: b-linux-gcp
+    worker:
+        max-run-time: 1800
+    run:
+        using: toolchain-script
+        script: build-sysroot.sh
+        toolchain-artifact: public/build/sysroot.tar.zst
+
+sysroot-i686-linux-gnu:
+    description: "Sysroot for linux32 builds"
+    attributes:
+        local-toolchain: true
+    worker:
+        env:
+            PACKAGES_TASKS: {task-reference: '<gcc-8>'}
+    treeherder:
+        symbol: TL(sysroot32)
+    dependencies:
+        gcc-8: packages-deb8-32-gcc-8
+    run:
+        toolchain-artifact: public/build/sysroot-i686-linux-gnu.tar.zst
+        arguments:
+            - i386
+
+sysroot-x86_64-linux-gnu:
+    description: "Sysroot for linux64 builds"
+    attributes:
+        local-toolchain: true
+    worker:
+        env:
+            PACKAGES_TASKS: {task-reference: '<gcc-8>'}
+    treeherder:
+        symbol: TL(sysroot64)
+    dependencies:
+        gcc-8: packages-deb8-gcc-8
+    run:
+        toolchain-artifact: public/build/sysroot-x86_64-linux-gnu.tar.zst
+        arguments:
+            - amd64
+
+sysroot-x86_64-linux-gnu-x11:
+    description: "Sysroot for linux64 builds (X11-only)"
+    attributes:
+        local-toolchain: true
+    worker:
+        env:
+            PACKAGES_TASKS: {task-reference: '<gcc-8> <gtk3>'}
+    treeherder:
+        symbol: TL(sysroot64-x11)
+    dependencies:
+        gcc-8: packages-deb8-gcc-8
+        gtk3: packages-deb8-gtk3
+    run:
+        toolchain-artifact: public/build/sysroot-x86_64-linux-gnu.tar.zst
+        arguments:
+            - amd64
+
+sysroot-wasm32-wasi-clang-8.0:
+    description: "Sysroot for wasi"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(sysroot-wasi-8)
+    run:
+        script: build-sysroot-wasi.sh
+        toolchain-artifact: public/build/sysroot-wasm32-wasi.tar.zst
+    fetches:
+        fetch:
+            - clang-8.0
+            - wasi-sdk-11
+        toolchain:
+            - linux64-clang-8.0
+            - wasm32-wasi-compiler-rt-8.0
+
+sysroot-wasm32-wasi-clang-17:
+    description: "Sysroot for wasi"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(sysroot-wasi-17)
+    run:
+        script: build-sysroot-wasi.sh
+        arguments:
+            - wasi-sdk.patch
+        resources:
+            - taskcluster/scripts/misc/wasi-sdk.patch
+        toolchain-alias:
+            by-project:
+                toolchains: null
+                default: sysroot-wasm32-wasi
+        toolchain-artifact: public/build/sysroot-wasm32-wasi.tar.zst
+    fetches:
+        fetch:
+            - clang-17
+            - wasi-sdk
+        toolchain:
+            - linux64-clang-17-stage1
+            - wasm32-wasi-compiler-rt-17
+
+sysroot-wasm32-wasi-clang-18:
+    description: "Sysroot for wasi"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(sysroot-wasi-18)
+    run:
+        script: build-sysroot-wasi.sh
+        arguments:
+            - wasi-sdk.patch
+        resources:
+            - taskcluster/scripts/misc/wasi-sdk.patch
+        toolchain-artifact: public/build/sysroot-wasm32-wasi.tar.zst
+    fetches:
+        fetch:
+            - clang-18
+            - wasi-sdk
+        toolchain:
+            - linux64-clang-18-stage1
+            - wasm32-wasi-compiler-rt-18
+
+sysroot-wasm32-wasi-clang-trunk:
+    description: "Sysroot for wasi"
+    attributes:
+        cached_task: false
+    treeherder:
+        symbol: TL(sysroot-wasi-trunk)
+    run:
+        script: build-sysroot-wasi.sh
+        arguments:
+            - wasi-sdk.patch
+        resources:
+            - taskcluster/scripts/misc/wasi-sdk.patch
+        toolchain-alias:
+            by-project:
+                toolchains: sysroot-wasm32-wasi
+                default: null
+        toolchain-artifact: public/build/sysroot-wasm32-wasi.tar.zst
+    fetches:
+        fetch:
+            - clang-trunk
+            - wasi-sdk
+        toolchain:
+            - linux64-clang-trunk-stage1
+            - wasm32-wasi-compiler-rt-trunk
+
+sysroot-aarch64-linux-gnu:
+    description: "Sysroot for linux64 aarch64 builds"
+    attributes:
+        local-toolchain: true
+    treeherder:
+        symbol: TL(sysroot-aarch64)
+    run:
+        toolchain-artifact: public/build/sysroot-aarch64-linux-gnu.tar.zst
+        arguments:
+            - arm64
+
+linux32-toolchain-sysroot:
+    description: "Sysroot for linux32 toolchain builds"
+    worker:
+        env:
+            PACKAGES_TASKS: {task-reference: '<gcc-8>'}
+    treeherder:
+        symbol: TL(sysroot32-toolchain)
+    dependencies:
+        gcc-8: packages-deb8-32-gcc-8
+    run:
+        arguments:
+            - i386
+            # For clang
+            - binutils-dev
+            - libxml2-dev
+            # For minidump-stackwalk
+            - libcurl4-openssl-dev
+            - libssl-dev
+            - libbz2-dev
+            # For msix-package
+            - libicu-dev
+
+linux64-toolchain-sysroot:
+    description: "Sysroot for linux64 toolchain builds"
+    worker:
+        env:
+            PACKAGES_TASKS: {task-reference: '<gcc-8>'}
+    treeherder:
+        symbol: TL(sysroot64-toolchain)
+    dependencies:
+        gcc-8: packages-deb8-gcc-8
+    run:
+        arguments:
+            - amd64
+            # For clang
+            - binutils-dev
+            - gcc-multilib
+            - lib32stdc++-8-dev
+            - libxml2-dev
+            # For minidump-stackwalk
+            - libcurl4-openssl-dev
+            - libssl-dev
+            - libbz2-dev
+            # For msix-package
+            - libicu-dev
diff --git a/taskcluster/ci/trigger-comm-central/kind.yml b/taskcluster/ci/trigger-comm-central/kind.yml
new file mode 100644
index 0000000000..0b6dfb2c64
--- /dev/null
+++ b/taskcluster/ci/trigger-comm-central/kind.yml
@@ -0,0 +1,43 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.trigger_comm_central:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    run-on-projects: ['mozilla-central-only']
+    treeherder:
+        kind: other
+        platform: other/opt
+        tier: 2
+    worker-type: b-linux-gcp
+    worker:
+        docker-image: {in-tree: debian12-amd64-build}
+        max-run-time: 600
+        taskcluster-proxy: true
+    run:
+        using: run-task
+        checkout: false
+
+jobs:
+    tb-rust:
+        description: 'Schedule job to verify the comm-central copy of third_party/rust'
+        treeherder:
+            symbol: tb-rust
+        run:
+            command: '/usr/bin/curl --fail --verbose -X POST -d "{}" -H "Content-Type: application/json" ${TASKCLUSTER_PROXY_URL}/api/hooks/v1/hooks/project-releng/cron-task-comm-central%2ftb-rust-vendor-check/trigger'
+        when:
+            files-changed:
+                - Cargo.lock
+                - Cargo.toml
+                - toolkit/library/rust/shared/Cargo.toml
+        scopes:
+            by-level:
+                '3':
+                    - 'hooks:trigger-hook:project-releng/cron-task-comm-central/tb-rust-vendor-check'
+                default: []
diff --git a/taskcluster/ci/updatebot/kind.yml b/taskcluster/ci/updatebot/kind.yml
new file mode 100644
index 0000000000..b62eccc5bc
--- /dev/null
+++ b/taskcluster/ci/updatebot/kind.yml
@@ -0,0 +1,92 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - fetch
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.release_notifications:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+jobs:
+    cron:
+        description: Cron Job for Updatebot
+        run-on-projects: []
+        treeherder:
+            kind: other
+            platform: updatebot/all
+            symbol: cron
+            tier: 1
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: updatebot}
+            max-run-time: 3600
+            taskcluster-proxy: true
+        scopes:
+            - secrets:get:project/updatebot/{level}/try-sshkey
+            - secrets:get:project/updatebot/{level}/phabricator-token
+            - secrets:get:project/updatebot/{level}/bugzilla-api-key
+            - secrets:get:project/updatebot/{level}/database-password
+            - secrets:get:project/updatebot/{level}/sentry-url
+            - secrets:get:project/updatebot/{level}/sql-proxy-config
+            - hooks:trigger-hook:project-gecko/in-tree-action-1-generic/*
+        run:
+            using: run-task
+            command: /builds/worker/run.py /builds/worker/checkouts/gecko /builds/worker/updatebot
+        notifications:
+            subject: 'updatebot cron failed'
+            message: 'updatebot cron failed'
+            status-types:
+                - on-failed
+                - on-exception
+            emails: ["tom@mozilla.com", "jewilde@mozilla.com"]
+        fetches:
+            toolchain:
+                - linux64-rust
+                - linux64-cargo-vet
+
+    cron-win:
+        description: Cron Job for Updatebot (Windows)
+        run-on-projects: []
+        treeherder:
+            kind: other
+            platform: updatebot/all
+            symbol: w-cron
+            tier: 1
+        worker-type: b-win2022
+        worker:
+            max-run-time: 3600
+            taskcluster-proxy: true
+            # begin _GENERATE_DEPOT_TOOLS_BINARIES_
+            # artifacts:
+            #     - type: directory
+            #       name: public/depot_tools.zip
+            #       path: build\src\obj-build\depot_tools
+            # end _GENERATE_DEPOT_TOOLS_BINARIES_
+            env:
+                TOOLTOOL_MANIFEST: "taskcluster/ci/updatebot/tooltool-manifests/updatebot.manifest"
+                MSYSTEM: "MINGW64"
+        run:
+            using: run-task
+            cwd: '{checkout}'
+            command: ./taskcluster/docker/updatebot/windows-setup.sh
+            tooltool-downloads: internal
+        scopes:
+            - secrets:get:project/updatebot/{level}/try-sshkey
+            - secrets:get:project/updatebot/{level}/phabricator-token
+            - secrets:get:project/updatebot/{level}/bugzilla-api-key
+            - secrets:get:project/updatebot/{level}/database-password
+            - secrets:get:project/updatebot/{level}/sentry-url
+            - secrets:get:project/updatebot/{level}/sql-proxy-config
+            - hooks:trigger-hook:project-gecko/in-tree-action-1-generic/*
+        fetches:
+            fetch:
+                - cloud-sql-proxy-1.25.0
+                - php-windows-7.4.24
+                - arcanist
+                - depot_tools
diff --git a/taskcluster/ci/updatebot/moz.build b/taskcluster/ci/updatebot/moz.build
new file mode 100644
index 0000000000..315dc32600
--- /dev/null
+++ b/taskcluster/ci/updatebot/moz.build
@@ -0,0 +1,8 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+with Files("**"):
+    BUG_COMPONENT = ("Developer Infrastructure", "Mach Vendor & Updatebot")
diff --git a/taskcluster/ci/updatebot/tooltool-manifests/updatebot.manifest b/taskcluster/ci/updatebot/tooltool-manifests/updatebot.manifest
new file mode 100644
index 0000000000..f284d80914
--- /dev/null
+++ b/taskcluster/ci/updatebot/tooltool-manifests/updatebot.manifest
@@ -0,0 +1,29 @@
+[
+  {
+    "version": "vcruntime140.dll from Microsoft Visual C++ Redistributable for Visual Studio 2019 ver 14.29.30133.0",
+    "size": 97160,
+    "visibility": "internal",
+    "digest": "aa6afd6bea27f554e3646152d8c4f96f7bcaaa4933f8b7c04346e410f93f23cfa6d29362fd5d51ccbb8b6223e094cd89e351f072ad0517553703f5bf9de28778",
+    "algorithm": "sha512",
+    "filename": "vcruntime140.dll",
+    "unpack": false
+  },
+  {
+    "version": "Visual Studio Community 2019, Windows SDK 10.0.19041.0, and a few system dlls Lobotmized for Angle Update",
+    "filename": "vs-sdk-and-windir-shim.zip",
+    "size": 463564917,
+    "algorithm": "sha512",
+    "digest": "20d93b0014ca44a666ca2b5cc570127f24378454889ff0a036df72213cd18140185d2c2e61df40bf1e4c0d9d2dc83a7796af9d2a13252de3c85faad068291945",
+    "visibility": "internal",
+    "unpack": true
+  },
+  {
+    "version": "Windows binaries for depot_tools retrieved with depot_tools revision 7b3351443198f4e7d068999b169385b55a43679a on 2021-12-18",
+    "filename": "depot_tools-preloaded-binaries-7b3351443198f4e7d068999b169385b55a43679a-2021-12-18.zip",
+    "size": 315038144,
+    "algorithm": "sha512",
+    "digest": "250f3f3fcf631c53de1f505c53eb5ba782864fa92111eef0d710a1e7d0ad3da66db2fb8908d7c6d83e149674e976984d679f9a641eb9bea0b5c3d7b4f236920d",
+    "visibility": "internal",
+    "unpack": true
+  }
+]
diff --git a/taskcluster/ci/upload-generated-sources-dummy/kind.yml b/taskcluster/ci/upload-generated-sources-dummy/kind.yml
new file mode 100644
index 0000000000..56e6762839
--- /dev/null
+++ b/taskcluster/ci/upload-generated-sources-dummy/kind.yml
@@ -0,0 +1,26 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.per_platform_dummy
+    - gecko_taskgraph.transforms.mac_dummy
+    - gecko_taskgraph.transforms.task
+
+only-for-build-platforms:
+    macosx64-shippable/opt
+    macosx64-devedition/opt
+
+kind-dependencies:
+    - build
+    - upload-generated-sources
+
+jobs:
+    upload-generated-sources-dummy:
+        description: Dummy task to pull in mac x64 and aarch64 upload-generated-symbols tasks
+        from-deps:
+            group-by: single-with-filters
+        worker-type: succeed
diff --git a/taskcluster/ci/upload-generated-sources/kind.yml b/taskcluster/ci/upload-generated-sources/kind.yml
new file mode 100644
index 0000000000..86123d336d
--- /dev/null
+++ b/taskcluster/ci/upload-generated-sources/kind.yml
@@ -0,0 +1,42 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.upload_generated_sources
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - build
+
+only-for-attributes:
+    - nightly
+    - shippable
+    - upload-generated-sources
+
+not-for-build-platforms:
+    - macosx64-shippable/opt
+    - macosx64-devedition/opt
+
+jobs:
+    upload-generated-sources:
+        description: Upload generated source files from build
+        from-deps:
+            group-by: single-with-filters
+        worker-type: t-linux-xlarge
+        treeherder:
+            symbol: Ugs
+            kind: build
+        worker:
+            docker-image: {in-tree: "lint"}
+            max-run-time: 600
+        run:
+            using: mach
+            mach: {artifact-reference: "python --virtualenv upload-generated-sources build/upload_generated_sources.py <build/public/build/target.generated-files.tar.gz>"}
+            sparse-profile: upload-generated-sources
+        scopes:
+            - secrets:get:project/releng/gecko/build/level-{level}/gecko-generated-sources-upload
diff --git a/taskcluster/ci/upload-symbols-dummy/kind.yml b/taskcluster/ci/upload-symbols-dummy/kind.yml
new file mode 100644
index 0000000000..d9202ef373
--- /dev/null
+++ b/taskcluster/ci/upload-symbols-dummy/kind.yml
@@ -0,0 +1,27 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.per_platform_dummy
+    - gecko_taskgraph.transforms.mac_dummy
+    - gecko_taskgraph.transforms.task
+
+only-for-build-platforms:
+    macosx64-shippable/opt
+    macosx64-devedition/opt
+
+kind-dependencies:
+    - build
+    - upload-symbols
+
+jobs:
+    upload-symbols-dummy:
+        description: Dummy task to pull in mac x64 and aarch64 upload-symbols tasks
+        from-deps:
+            group-by: single-with-filters
+            unique-kinds: false
+        worker-type: succeed
diff --git a/taskcluster/ci/upload-symbols/kind.yml b/taskcluster/ci/upload-symbols/kind.yml
new file mode 100644
index 0000000000..0421835607
--- /dev/null
+++ b/taskcluster/ci/upload-symbols/kind.yml
@@ -0,0 +1,53 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - taskgraph.transforms.from_deps
+    - gecko_taskgraph.transforms.upload_symbols
+    - gecko_taskgraph.transforms.job
+    - gecko_taskgraph.transforms.task
+
+kind-dependencies:
+    - build
+    - toolchain
+
+not-for-build-platforms:
+    # Address Sanitizer builds don't have symbols to upload.
+    - linux64-asan-reporter-shippable/opt
+    - win64-asan-reporter-shippable/opt
+    - linux-geckodriver/opt
+    - linux64-geckodriver/opt
+    - linux64-aarch64-geckodriver/opt
+    - macosx64-geckodriver/opt
+    - macosx64-aarch64-geckodriver/opt
+    - win32-geckodriver/opt
+    - win64-geckodriver/opt
+    - win64-aarch64-geckodriver/opt
+
+jobs:
+    upload-symbols:
+        description: Upload Symbols
+        from-deps:
+            group-by: platform
+        worker-type: b-linux-gcp
+        use-system-python: false
+        worker:
+            docker-image: {in-tree: "debian12-base"}
+            max-run-time: 1800
+            env:
+                # {level} gets replaced in the upload_symbols transform
+                SYMBOL_SECRET: "project/releng/gecko/build/level-{level}/gecko-symbol-upload"
+                MAKECAB: /builds/worker/fetches/makecab/makecab
+                MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE: system
+        run:
+            using: mach
+            mach: {artifact-reference: "python toolkit/crashreporter/tools/upload_symbols.py <build/public/cidata/target.crashreporter-symbols-full.tar.zst>"}
+            sparse-profile: upload-symbols
+        scopes:
+            - secrets:get:project/releng/gecko/build/level-{level}/gecko-symbol-upload
+        fetches:
+            toolchain:
+                - linux64-makecab
diff --git a/taskcluster/ci/valgrind/kind.yml b/taskcluster/ci/valgrind/kind.yml
new file mode 100644
index 0000000000..754616e611
--- /dev/null
+++ b/taskcluster/ci/valgrind/kind.yml
@@ -0,0 +1,65 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+
+transforms:
+    - gecko_taskgraph.transforms.build_attrs:transforms
+    - gecko_taskgraph.transforms.build_lints:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    attributes:
+        retrigger: true
+    use-system-python: false
+
+jobs:
+    linux64-valgrind-qr/opt-swr:
+        description: "Linux64 Valgrind Opt WebRender"
+        index:
+            product: firefox
+            job-name: linux64-valgrind-qr/opt-swr
+        treeherder:
+            platform: linux64-qr/opt
+            symbol: V-swr
+            kind: build
+            tier: 1
+        worker-type: t-linux-kvm
+        worker:
+            docker-image: {in-tree: valgrind-build}
+            max-run-time: 72000
+            env:
+                NEED_XVFB: "true"
+                PERFHERDER_EXTRA_OPTIONS: valgrind
+        run:
+            using: mozharness
+            actions: [get-secrets, build, valgrind-test]
+            custom-build-variant-cfg: valgrind
+            config:
+                - builds/releng_base_firefox.py
+                - builds/releng_base_linux_64_builds.py
+            extra-config:
+                extra_prefs: [gfx.webrender.software=true]
+            script: "mozharness/scripts/fx_desktop_build.py"
+            secrets: true
+            tooltool-downloads: public
+        use-sccache: true
+        fetches:
+            toolchain:
+                - linux64-clang
+                - linux64-rust
+                - linux64-cbindgen
+                - linux64-dump_syms
+                - linux64-sccache
+                - linux64-nasm
+                - linux64-node
+                - linux64-pkgconf
+                - sysroot-x86_64-linux-gnu
+                - sysroot-wasm32-wasi
+        optimization:
+            skip-unless-expanded: null
diff --git a/taskcluster/ci/webrender/kind.yml b/taskcluster/ci/webrender/kind.yml
new file mode 100644
index 0000000000..84a938cf67
--- /dev/null
+++ b/taskcluster/ci/webrender/kind.yml
@@ -0,0 +1,634 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+kind-dependencies:
+    - toolchain
+    - build
+
+transforms:
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+job-defaults:
+    attributes:
+        retrigger: true
+    run-on-projects: ['integration', 'release']
+    treeherder:
+        tier: 1
+        kind: other
+    worker:
+        max-run-time: 3600
+        env:
+            RUST_BACKTRACE: 'full'
+            RUSTFLAGS: '--deny warnings'
+    run:
+        sparse-profile: webrender
+    use-system-python: false
+
+jobs:
+    lint-tidy:
+        description: Runs linting checks on WebRender code
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: webrender}
+        run:
+            using: run-task
+            cwd: '{checkout}/gfx/wr'
+            command: >-
+                pushd /tmp &&
+                python3 -m pip install six &&
+                python3 -m pip install -e 'git+https://github.com/servo/servo.git@65a4d1646da46c37fe748add6dcf24b62ebb602a#egg=servo_tidy&subdirectory=python/tidy' &&
+                popd &&
+                servo-tidy
+        treeherder:
+            platform: linux64-qr/opt
+            symbol: WR(tidy)
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+
+    linux64-release:
+        description: Runs release-mode WebRender CI tests on a Linux worker
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: webrender}
+        fetches:
+            toolchain:
+                - linux64-rust
+                - wrench-deps
+        run:
+            using: run-task
+            command: >-
+                export PATH=$PATH:$MOZ_FETCHES_DIR/rustc/bin:${MOZ_FETCHES_DIR}/wrench-deps/meson &&
+                cd $HOME/checkouts/gecko/gfx/wr &&
+                mv $MOZ_FETCHES_DIR/wrench-deps/{vendor,.cargo} ./ &&
+                CARGOFLAGS="--verbose --frozen" ci-scripts/linux-release-tests.sh
+        treeherder:
+            platform: linux64-qr/opt
+            symbol: WR(wrench)
+            kind: other
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+
+    linux64-debug:
+        description: Runs debug-mode WebRender CI tests on a Linux worker
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: webrender}
+        fetches:
+            toolchain:
+                - linux64-rust
+                - wrench-deps
+        run:
+            using: run-task
+            command: >-
+                export PATH=$PATH:$MOZ_FETCHES_DIR/rustc/bin:${MOZ_FETCHES_DIR}/wrench-deps/meson &&
+                cd $HOME/checkouts/gecko/gfx/wr &&
+                mv $MOZ_FETCHES_DIR/wrench-deps/{vendor,.cargo} ./ &&
+                CARGOFLAGS="--verbose --frozen" ci-scripts/linux-debug-tests.sh
+        treeherder:
+            platform: linux64-qr/debug
+            symbol: WR(wrench)
+            kind: other
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+
+    wrench-macos-build:
+        description: Cross compilation of wrench for macOS on Linux
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: webrender}
+            chain-of-trust: true
+            artifacts:
+                - type: file
+                  name: public/build/wrench-macos.tar.bz2
+                  path: /builds/worker/artifacts/wrench-macos.tar.bz2
+                - type: file
+                  name: public/build/wrench-macos-headless.tar.bz2
+                  path: /builds/worker/artifacts/wrench-macos-headless.tar.bz2
+        dependencies:
+            macosx64-clang-14: toolchain-macosx64-clang-14-raw
+        fetches:
+            toolchain:
+                - linux64-rust-macos
+                - linux64-clang-14
+                - macosx64-sdk
+                - wrench-deps
+            macosx64-clang-14:
+                - artifact: clang.tar.zst
+                  dest: clang-mac
+        run:
+            using: run-task
+            command: '$HOME/checkouts/gecko/taskcluster/scripts/misc/wrench-macos-build.sh'
+        treeherder:
+            platform: osx-cross/opt
+            symbol: WR(B)
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+                - 'taskcluster/scripts/misc/wr-macos-cross-build-setup.sh'
+                - 'taskcluster/scripts/misc/wrench-macos-build.sh'
+
+    macos-release:
+        description: Runs release-mode WebRender CI tests on a macOS worker
+        worker-type: t-osx-1015-r8
+        worker:
+            # repo cloning has highly variable run time
+            max-run-time: 7200
+            env:
+                MOZ_FETCHES_DIR: 'checkouts/gecko/gfx/wr'
+        dependencies:
+            webrender-wrench-macos-build: webrender-wrench-macos-build
+        fetches:
+            webrender-wrench-macos-build:
+                - 'wrench-macos.tar.bz2'
+                - 'wrench-macos-headless.tar.bz2'
+        run:
+            using: run-task
+            cwd: '{checkout}/gfx/wr'
+            command: >-
+                export WRENCH_HEADLESS_TARGET=$PWD/wrench-macos-headless/ &&
+                export WRENCH_BINARY=$PWD/wrench-macos/bin/wrench &&
+                ci-scripts/macos-release-tests.sh
+        treeherder:
+            platform: macosx1015-64-qr/opt
+            symbol: WR(wrench)
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+
+    cargotest-macos-build:
+        description: Cross compilation of cargo tests for macOS on Linux
+        worker-type: b-linux-gcp
+        worker:
+            docker-image: {in-tree: webrender}
+            chain-of-trust: true
+            artifacts:
+                - type: file
+                  name: public/build/cargo-test-binaries.tar.bz2
+                  path: /builds/worker/artifacts/cargo-test-binaries.tar.bz2
+        fetches:
+            toolchain:
+                - linux64-rust-macos
+                - linux64-clang
+                - macosx64-sdk
+                - wrench-deps
+        run:
+            using: run-task
+            command: '$HOME/checkouts/gecko/taskcluster/scripts/misc/wr-cargotest-macos-build.sh'
+        treeherder:
+            platform: osx-cross/debug
+            symbol: WR(B)
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+                - 'taskcluster/scripts/misc/wr-cargotest-macos-build.sh'
+                - 'taskcluster/scripts/misc/wr-macos-cross-build-setup.sh'
+
+    macos-debug:
+        description: Runs debug-mode WebRender CI tests on a macOS worker
+        worker-type: t-osx-1015-r8
+        worker:
+            max-run-time: 3600
+            env:
+                MOZ_FETCHES_DIR: 'checkouts/gecko/gfx/wr'
+        dependencies:
+            webrender-cargotest-macos-build: webrender-cargotest-macos-build
+        fetches:
+            webrender-cargotest-macos-build:
+                - 'cargo-test-binaries.tar.bz2'
+        run:
+            using: run-task
+            cwd: '{checkout}/gfx/wr'
+            command: >-
+                mv cargo-test-binaries target &&
+                cd target &&
+                for i in debug/deps/*; do $i; done
+        treeherder:
+            platform: macosx1015-64-qr/debug
+            symbol: WR(cargotest)
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+
+    windows:
+        description: Runs WebRender CI tests on a Windows worker
+        worker-type: win11-64-2009-source
+        worker:
+            max-run-time: 5400
+            env:
+                NODE_OPTIONS: '--max_old_space_size=4096'
+        fetches:
+            toolchain:
+                - win64-rust
+                - vs
+                - wrench-deps
+        run:
+            using: run-task
+            use-caches: false
+            command: '$GECKO_PATH/taskcluster/scripts/misc/wrench-windows-tests.sh'
+        treeherder:
+            platform: windows11-64-2009-qr/release
+            symbol: WR(wrench)
+        when:
+            files-changed:
+                - 'build/win64/mozconfig.vs2019'
+                - 'gfx/wr/**'
+                - 'taskcluster/scripts/misc/wrench-windows-tests.sh'
+
+    wrench-android-debug:
+        description: Debug build of wrench for Android
+        attributes:
+            build_platform: android
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 5400
+            docker-image: {in-tree: webrender}
+            artifacts:
+                - type: file
+                  name: public/build/wrench-debug.apk
+                  path: /builds/worker/checkouts/gecko/gfx/wr/target/debug/apk/wrench.apk
+                - type: file
+                  name: public/build/reftests.tar.gz
+                  path: /builds/worker/checkouts/gecko/gfx/wr/wrench/reftests.tar.gz
+                - type: file
+                  name: public/build/mozdevice.tar.gz
+                  path: /builds/worker/checkouts/gecko/testing/mozbase/mozdevice.tar.gz
+                - type: file
+                  name: public/build/six.tar.gz
+                  path: /builds/worker/checkouts/gecko/third_party/python/six.tar.gz
+        run:
+            using: run-task
+            cwd: '{checkout}/gfx/wr/wrench'
+            command: >-
+                $GECKO_PATH/taskcluster/scripts/misc/wrench-android-build.sh debug &&
+                tar czf reftests.tar.gz reftests/ &&
+                cd $GECKO_PATH/testing/mozbase &&
+                tar czf mozdevice.tar.gz mozdevice/ &&
+                cd $GECKO_PATH/third_party/python &&
+                tar czf six.tar.gz six/
+        fetches:
+            toolchain:
+                - android-gradle-dependencies
+                - android-ndk-linux
+                - android-sdk-linux
+                - android-system-image-x86_64-linux
+                - android-avd-x86_64-linux
+                - linux64-cargo-apk
+                - linux64-jdk
+                - linux64-rust-android
+                - wrench-deps
+        treeherder:
+            platform: android-em-7-0-x86/debug
+            symbol: WR(B)
+        when:
+            files-changed:
+                - 'build.gradle'
+                - 'gfx/wr/**'
+                - 'taskcluster/scripts/misc/wrench-android-build.sh'
+
+    wrench-android-release:
+        description: Release build of wrench for Android
+        attributes:
+            build_platform: android
+        worker-type: b-linux-gcp
+        worker:
+            max-run-time: 5400
+            docker-image: {in-tree: webrender}
+            artifacts:
+                - type: file
+                  name: public/build/wrench-release.apk
+                  path: /builds/worker/checkouts/gecko/gfx/wr/target/release/apk/wrench.apk
+                - type: file
+                  name: public/build/reftests.tar.gz
+                  path: /builds/worker/checkouts/gecko/gfx/wr/wrench/reftests.tar.gz
+                - type: file
+                  name: public/build/mozdevice.tar.gz
+                  path: /builds/worker/checkouts/gecko/testing/mozbase/mozdevice.tar.gz
+                - type: file
+                  name: public/build/six.tar.gz
+                  path: /builds/worker/checkouts/gecko/third_party/python/six.tar.gz
+        run:
+            using: run-task
+            cwd: '{checkout}/gfx/wr/wrench'
+            command: >-
+                $GECKO_PATH/taskcluster/scripts/misc/wrench-android-build.sh release &&
+                tar czf reftests.tar.gz reftests/ &&
+                cd $GECKO_PATH/testing/mozbase &&
+                tar czf mozdevice.tar.gz mozdevice/ &&
+                cd $GECKO_PATH/third_party/python &&
+                tar czf six.tar.gz six/
+        fetches:
+            toolchain:
+                - android-gradle-dependencies
+                - android-ndk-linux
+                - android-sdk-linux
+                - android-system-image-x86_64-linux
+                - android-avd-x86_64-linux
+                - linux64-cargo-apk
+                - linux64-jdk
+                - linux64-rust-android
+                - wrench-deps
+        treeherder:
+            platform: android-em-7-0-x86/opt
+            symbol: WR(B)
+        when:
+            files-changed:
+                - 'build.gradle'
+                - 'gfx/wr/**'
+                - 'taskcluster/scripts/misc/wrench-android-build.sh'
+
+    android-emulator-debug:
+        description: Run debug wrench reftests on Android emulator
+        attributes:
+            build_platform: android
+        worker-type: t-linux-kvm  # privileged:true doesn't work on b-linux
+        worker:
+            max-run-time: 5400
+            docker-image: {in-tree: ubuntu1804-test}
+            privileged: true  # for access to /dev/kvm for hw accel in the emulator
+            artifacts:
+                - type: directory
+                  name: public/build/logs
+                  path: /builds/worker/workspace/build/logs
+            env:
+                # need hard-coded URLs until bug 1551875 is fixed
+                TASKCLUSTER_ROOT_URL: 'https://taskcluster.net'
+                TASKCLUSTER_PROXY_URL: 'http://taskcluster'
+                MOZHARNESS_SCRIPT: android_wrench.py
+                MOZHARNESS_CONFIG: android/wrench.py
+                NEED_WINDOW_MANAGER: 'true'
+                PYTHON: "/builds/worker/checkouts/gecko/mach python"
+        dependencies:
+            webrender-wrench-android-debug: webrender-wrench-android-debug
+        fetches:
+            webrender-wrench-android-debug:
+                - artifact: 'wrench-debug.apk'
+                  extract: false
+            toolchain:
+                - android-sdk-linux
+                - android-system-image-x86_64-linux
+                - android-avd-x86_64-linux
+                - linux64-jdk
+        run:
+            using: run-task
+            tooltool-downloads: internal
+            command: >-
+                export WRENCH_APK=$MOZ_FETCHES_DIR/wrench-debug.apk &&
+                export WRENCH_REFTESTS=$GECKO_PATH/gfx/wr/wrench/reftests &&
+                export MOZHARNESS_PATH=$GECKO_PATH/testing/mozharness &&
+                $GECKO_PATH/taskcluster/scripts/tester/test-linux.sh
+        treeherder:
+            platform: android-em-7-0-x86/debug
+            symbol: WR(wrench)
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+                - 'testing/mozharness/scripts/android_*.py'
+                - 'testing/mozharness/configs/android/*.py'
+
+    android-emulator-release:
+        description: Run release wrench reftests on Android emulator
+        attributes:
+            build_platform: android
+        worker-type: t-linux-kvm  # privileged:true doesn't work on b-linux
+        worker:
+            max-run-time: 5400
+            docker-image: {in-tree: ubuntu1804-test}
+            privileged: true  # for access to /dev/kvm for hw accel in the emulator
+            artifacts:
+                - type: directory
+                  name: public/build/logs
+                  path: /builds/worker/workspace/build/logs
+            env:
+                # need hard-coded URLs until bug 1551875 is fixed
+                TASKCLUSTER_ROOT_URL: 'https://taskcluster.net'
+                TASKCLUSTER_PROXY_URL: 'http://taskcluster'
+                MOZHARNESS_SCRIPT: android_wrench.py
+                MOZHARNESS_CONFIG: android/wrench.py
+                NEED_WINDOW_MANAGER: 'true'
+                PYTHON: "/builds/worker/checkouts/gecko/mach python"
+        dependencies:
+            webrender-wrench-android-release: webrender-wrench-android-release
+        fetches:
+            webrender-wrench-android-release:
+                - artifact: 'wrench-release.apk'
+                  extract: false
+            toolchain:
+                - android-sdk-linux
+                - android-system-image-x86_64-linux
+                - android-avd-x86_64-linux
+                - linux64-jdk
+        run:
+            using: run-task
+            tooltool-downloads: internal
+            command: >-
+                export WRENCH_APK=$MOZ_FETCHES_DIR/wrench-release.apk &&
+                export WRENCH_REFTESTS=$GECKO_PATH/gfx/wr/wrench/reftests &&
+                export MOZHARNESS_PATH=$GECKO_PATH/testing/mozharness &&
+                $GECKO_PATH/taskcluster/scripts/tester/test-linux.sh
+        treeherder:
+            platform: android-em-7-0-x86/opt
+            symbol: WR(wrench)
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+                - 'testing/mozharness/scripts/android_*.py'
+                - 'testing/mozharness/configs/android/*.py'
+
+    android-hw-p5-debug:
+        description: Run debug wrench reftests on Android Pixel5
+        attributes:
+            build_platform: android
+        worker-type: t-bitbar-gw-unit-p5
+        worker:
+            max-run-time: 5400
+            artifacts:
+                - type: directory
+                  name: public/build/logs
+                  path: build/logs
+            env:
+                MOZHARNESS_SCRIPT: android_wrench.py
+                MOZHARNESS_CONFIG: android/wrench.py
+                MOZ_FETCHES_DIR: fetches
+                PYTHONPATH: "fetches/mozdevice:fetches/six"
+        dependencies:
+            webrender-wrench-android-debug: webrender-wrench-android-debug
+            android-build: build-android-arm/debug
+        fetches:
+            webrender-wrench-android-debug:
+                - artifact: 'wrench-debug.apk'
+                  extract: false
+                - 'reftests.tar.gz'
+                - 'mozdevice.tar.gz'
+                - 'six.tar.gz'
+            android-build:
+                - artifact: 'mozharness.zip'
+                  dest: 'mozharness'
+        run:
+            using: run-task
+            checkout: false
+            run-as-root: true
+            command: >-
+                export WRENCH_APK=$MOZ_FETCHES_DIR/wrench-debug.apk &&
+                export WRENCH_REFTESTS=$MOZ_FETCHES_DIR/reftests &&
+                export MOZHARNESS_PATH=$MOZ_FETCHES_DIR/mozharness &&
+                python3 ${MOZHARNESS_PATH}/scripts/${MOZHARNESS_SCRIPT} --config-file ${MOZHARNESS_PATH}/configs/${MOZHARNESS_CONFIG}
+        treeherder:
+            platform: android-hw-p5-13-0-arm7/debug
+            symbol: WR(wrench)
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+                - 'testing/mozharness/scripts/android_*.py'
+                - 'testing/mozharness/configs/android/*.py'
+                - 'testing/mozbase/mozdevice/**'
+
+    android-hw-p5-opt:
+        description: Run opt wrench reftests on Android Pixel5
+        attributes:
+            build_platform: android
+        worker-type: t-bitbar-gw-unit-p5
+        worker:
+            max-run-time: 5400
+            artifacts:
+                - type: directory
+                  name: public/build/logs
+                  path: build/logs
+            env:
+                MOZHARNESS_SCRIPT: android_wrench.py
+                MOZHARNESS_CONFIG: android/wrench.py
+                MOZ_FETCHES_DIR: fetches
+                PYTHONPATH: "fetches/mozdevice:fetches/six"
+        dependencies:
+            webrender-wrench-android-release: webrender-wrench-android-release
+            android-build: build-android-arm/opt
+        fetches:
+            webrender-wrench-android-release:
+                - artifact: 'wrench-release.apk'
+                  extract: false
+                - 'reftests.tar.gz'
+                - 'mozdevice.tar.gz'
+                - 'six.tar.gz'
+            android-build:
+                - artifact: 'mozharness.zip'
+                  dest: 'mozharness'
+        run:
+            using: run-task
+            checkout: false
+            run-as-root: true
+            command: >-
+                export WRENCH_APK=$MOZ_FETCHES_DIR/wrench-release.apk &&
+                export WRENCH_REFTESTS=$MOZ_FETCHES_DIR/reftests &&
+                export MOZHARNESS_PATH=$MOZ_FETCHES_DIR/mozharness &&
+                python3 ${MOZHARNESS_PATH}/scripts/${MOZHARNESS_SCRIPT} --config-file ${MOZHARNESS_PATH}/configs/${MOZHARNESS_CONFIG}
+        treeherder:
+            platform: android-hw-p5-13-0-arm7/opt
+            symbol: WR(wrench)
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+                - 'testing/mozharness/scripts/android_*.py'
+                - 'testing/mozharness/configs/android/*.py'
+                - 'testing/mozbase/mozdevice/**'
+
+    android-hw-a51-debug:
+        description: Run debug wrench reftests on Android Samsung Galaxy A51
+        attributes:
+            build_platform: android
+        worker-type: t-bitbar-gw-perf-a51
+        worker:
+            max-run-time: 5400
+            artifacts:
+                - type: directory
+                  name: public/build/logs
+                  path: build/logs
+            env:
+                MOZHARNESS_SCRIPT: android_wrench.py
+                MOZHARNESS_CONFIG: android/wrench.py
+                MOZ_FETCHES_DIR: fetches
+                PYTHONPATH: "fetches/mozdevice:fetches/six"
+        dependencies:
+            webrender-wrench-android-debug: webrender-wrench-android-debug
+            android-build: build-android-arm/debug
+        fetches:
+            webrender-wrench-android-debug:
+                - artifact: 'wrench-debug.apk'
+                  extract: false
+                - 'reftests.tar.gz'
+                - 'mozdevice.tar.gz'
+                - 'six.tar.gz'
+            android-build:
+                - artifact: 'mozharness.zip'
+                  dest: 'mozharness'
+        run:
+            using: run-task
+            checkout: false
+            run-as-root: true
+            command: >-
+                export WRENCH_APK=$MOZ_FETCHES_DIR/wrench-debug.apk &&
+                export WRENCH_REFTESTS=$MOZ_FETCHES_DIR/reftests &&
+                export MOZHARNESS_PATH=$MOZ_FETCHES_DIR/mozharness &&
+                python3 ${MOZHARNESS_PATH}/scripts/${MOZHARNESS_SCRIPT} --config-file ${MOZHARNESS_PATH}/configs/${MOZHARNESS_CONFIG}
+        treeherder:
+            platform: android-hw-a51-11-0-arm7/debug
+            symbol: WR(wrench)
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+                - 'testing/mozharness/scripts/android_*.py'
+                - 'testing/mozharness/configs/android/*.py'
+                - 'testing/mozbase/mozdevice/**'
+
+    android-hw-a51-opt:
+        description: Run opt wrench reftests on Android Samsung Galaxy A51
+        attributes:
+            build_platform: android
+        worker-type: t-bitbar-gw-perf-a51
+        worker:
+            max-run-time: 5400
+            artifacts:
+                - type: directory
+                  name: public/build/logs
+                  path: build/logs
+            env:
+                MOZHARNESS_SCRIPT: android_wrench.py
+                MOZHARNESS_CONFIG: android/wrench.py
+                MOZ_FETCHES_DIR: fetches
+                PYTHONPATH: "fetches/mozdevice:fetches/six"
+        dependencies:
+            webrender-wrench-android-release: webrender-wrench-android-release
+            android-build: build-android-arm/opt
+        fetches:
+            webrender-wrench-android-release:
+                - artifact: 'wrench-release.apk'
+                  extract: false
+                - 'reftests.tar.gz'
+                - 'mozdevice.tar.gz'
+                - 'six.tar.gz'
+            android-build:
+                - artifact: 'mozharness.zip'
+                  dest: 'mozharness'
+        run:
+            using: run-task
+            checkout: false
+            run-as-root: true
+            command: >-
+                export WRENCH_APK=$MOZ_FETCHES_DIR/wrench-release.apk &&
+                export WRENCH_REFTESTS=$MOZ_FETCHES_DIR/reftests &&
+                export MOZHARNESS_PATH=$MOZ_FETCHES_DIR/mozharness &&
+                python3 ${MOZHARNESS_PATH}/scripts/${MOZHARNESS_SCRIPT} --config-file ${MOZHARNESS_PATH}/configs/${MOZHARNESS_CONFIG}
+        treeherder:
+            platform: android-hw-a51-11-0-arm7/opt
+            symbol: WR(wrench)
+        when:
+            files-changed:
+                - 'gfx/wr/**'
+                - 'testing/mozharness/scripts/android_*.py'
+                - 'testing/mozharness/configs/android/*.py'
+                - 'testing/mozbase/mozdevice/**'