1 files changed, 52 insertions, 0 deletions
diff --git a/comm/taskcluster/comm_taskgraph/transforms/repackage_msix.py b/comm/taskcluster/comm_taskgraph/transforms/repackage_msix.py
new file mode 100644
index 0000000000..793519f6ff
--- /dev/null
+++ b/comm/taskcluster/comm_taskgraph/transforms/repackage_msix.py
@@ -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/.
+
+import logging
+
+from taskgraph.transforms.base import TransformSequence
+
+logger = logging.getLogger(__name__)
+
+transforms = TransformSequence()
+
+
+@transforms.add
+def add_langpack_fetches(config, jobs):
+    """Adds the fetch configuration for the langpacks. This is done here
+    because Thunderbird langpacks are not signed and therefore not found as
+    artifacts of "shippable-l10n-signing" like they are for Firefox. Need to
+    use "shippable-l10n".
+    """
+
+    def depends_filter(dep_task):
+        return (
+            dep_task.kind == "shippable-l10n"
+            and dep_task.attributes["build_platform"] == "linux64-shippable"
+            and dep_task.attributes["build_type"] == "opt"
+        )
+
+    for job in jobs:
+        dependencies = job.get("dependencies", {})
+        fetches = job.setdefault("fetches", {})
+
+        # The keys are unique, like `shippable-l10n-linux64-shippable-1/opt`, so we
+        # can't ask for the tasks directly, we must filter for them.
+        for t in filter(depends_filter, config.kind_dependencies_tasks.values()):
+            dependencies.update({t.label: t.label})
+
+            fetches.update(
+                {
+                    t.label: [
+                        {
+                            "artifact": f"{loc}/target.langpack.xpi",
+                            "extract": False,
+                            # Otherwise we can't disambiguate locales!
+                            "dest": f"distribution/extensions/{loc}",
+                        }
+                        for loc in t.attributes["chunk_locales"]
+                    ]
+                }
+            )
+
+        yield job