Auto merge of #111660 - Kobzol:try-build-skip-docs, r=mark-simulacrum

Do not build docs in try builds

This PR adds a new environment variable to the optimized build Python script, which causes it to ignore certain parts of the final `dist` build (mainly docs) in try builds. This reduces the duration of try builds by ~10 minutes.

3 files changed, 15 insertions, 0 deletions

diff --git a/src/ci/docker/run.sh b/src/ci/docker/run.sh
index 8bea8cd4c87..2fe3438e0fe 100755
--- a/src/ci/docker/run.sh
+++ b/src/ci/docker/run.sh
@@ -264,6 +264,7 @@ docker \
   --env RUST_CI_OVERRIDE_RELEASE_CHANNEL \
   --env CI_JOB_NAME="${CI_JOB_NAME-$IMAGE}" \
   --env BASE_COMMIT="$BASE_COMMIT" \
+  --env DIST_TRY_BUILD \
   --init \
   --rm \
   rust-ci \
diff --git a/src/ci/github-actions/ci.yml b/src/ci/github-actions/ci.yml
index fd619467fc1..d3cb6b6ed52 100644
--- a/src/ci/github-actions/ci.yml
+++ b/src/ci/github-actions/ci.yml
@@ -757,6 +757,7 @@ jobs:
     <<: *base-ci-job
     name: try - ${{ matrix.name }}
     env:
+      DIST_TRY_BUILD: 1
       <<: [*shared-ci-variables, *prod-variables]
     if: github.event_name == 'push' && (github.ref == 'refs/heads/try' || github.ref == 'refs/heads/try-perf') && github.repository == 'rust-lang-ci/rust'
     strategy:
diff --git a/src/ci/stage-build.py b/src/ci/stage-build.py
index 066d3a198f2..4141296bd42 100644
--- a/src/ci/stage-build.py
+++ b/src/ci/stage-build.py
@@ -48,6 +48,11 @@ RUSTC_PGO_CRATES = [
 
 LLVM_BOLT_CRATES = LLVM_PGO_CRATES
 
+
+def is_try_build() -> bool:
+    return os.environ.get("DIST_TRY_BUILD", "0") != "0"
+
+
 class Pipeline:
     # Paths
     def checkout_path(self) -> Path:
@@ -851,6 +856,13 @@ def run(runner: BenchmarkRunner):
 
     build_args = sys.argv[1:]
 
+    # Skip components that are not needed for try builds to speed them up
+    if is_try_build():
+        LOGGER.info("Skipping building of unimportant components for a try build")
+        for target in ("rust-docs", "rustc-docs", "rust-docs-json", "rust-analyzer",
+                       "rustc-src", "clippy", "miri", "rustfmt"):
+            build_args.extend(["--exclude", target])
+
     timer = Timer()
     pipeline = create_pipeline()
 
@@ -865,6 +877,7 @@ def run(runner: BenchmarkRunner):
 
     print_binary_sizes(pipeline)
 
+
 if __name__ == "__main__":
     runner = DefaultBenchmarkRunner()
     run(runner)