1 files changed, 29 insertions, 0 deletions
diff --git a/third_party/rust/pin-project-lite/ci/install-component.sh b/third_party/rust/pin-project-lite/ci/install-component.sh
new file mode 100644
index 0000000000..943755c5b2
--- /dev/null
+++ b/third_party/rust/pin-project-lite/ci/install-component.sh
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+set -euo pipefail
+
+component="${1}"
+
+if ! rustup component add "${component}" 2>/dev/null; then
+    # If the component is unavailable on the latest nightly,
+    # use the latest toolchain with the component available.
+    # Refs: https://github.com/rust-lang/rustup-components-history#the-web-part
+    target=$(curl -sSf "https://rust-lang.github.io/rustup-components-history/x86_64-unknown-linux-gnu/${component}")
+    echo "'${component}' is unavailable on the default toolchain, use the toolchain 'nightly-${target}' instead"
+
+    rustup update "nightly-${target}" --no-self-update
+    rustup default "nightly-${target}"
+
+    echo "Query rust and cargo versions:"
+    rustup -V
+    rustc -V
+    cargo -V
+
+    rustup component add "${component}"
+fi
+
+echo "Query component versions:"
+case "${component}" in
+    clippy | miri) cargo "${component}" -V ;;
+    rustfmt) "${component}" -V ;;
+esac