## Why
A rerun of the Windows Bazel clippy job after
[#19161](https://github.com/openai/codex/pull/19161) had exactly the
cache behavior we wanted in BuildBuddy: zero action-cache misses. Even
so, the GitHub job still took a little over five minutes.
The problem was that the job was paying for two separate Bazel startup
paths:
1. a `bazel query` to discover extra lint targets
2. the real `bazel build --config=clippy ...` invocation
On Windows, that query was bypassing the CI Bazel wrapper, so it did not
reuse the same `--output_user_root`, CI config, or remote-cache setup as
the real build. In practice that meant the rerun could still cold-start
a separate Bazel server before the actual clippy build even began.
## What
- add `.github/scripts/run-bazel-query-ci.sh` to run CI-side Bazel
queries with the same startup and cache-related flags as the main Bazel
command
- switch `scripts/list-bazel-clippy-targets.sh` to use that helper for
manual `rust_test` target discovery
- switch `tools/argument-comment-lint/list-bazel-targets.sh` to use the
same helper
- simplify `.github/scripts/run-argument-comment-lint-bazel.sh` so its
Windows-only query path also goes through the shared helper
This keeps the target-discovery queries aligned with the later
build/test invocation instead of treating them as a separate cold Bazel
session.
## Verification
- `bash -n .github/scripts/run-bazel-query-ci.sh`
- `bash -n scripts/list-bazel-clippy-targets.sh`
- `bash -n tools/argument-comment-lint/list-bazel-targets.sh`
- `bash -n .github/scripts/run-argument-comment-lint-bazel.sh`
- mocked a Windows invocation of `run-bazel-query-ci.sh` and verified it
forwards `--output_user_root`, `--config=ci-windows`, the BuildBuddy
auth header, and the repository cache flags
## Docs
No documentation updates are needed.
## Why
Bazel CI had two independent Windows issues:
- The workflow saved/restored `~/.cache/bazel-repo-cache`, but
`.bazelrc` configured `common:ci-windows
--repository_cache=D:/a/.cache/bazel-repo-cache`, so `actions/cache` and
Bazel could point at different directories.
- The Windows `Bazel clippy` job passed the full explicit target list
from `//codex-rs/...`, but some of those explicit targets are
intentionally incompatible with `//:local_windows`.
`run-argument-comment-lint-bazel.sh` already handles that with
`--skip_incompatible_explicit_targets`; the clippy workflow path did
not.
I also tried switching the workflow cache path to
`D:\a\.cache\bazel-repo-cache`, but the Windows clippy job repeatedly
failed with `Failed to restore: Cache service responded with 400`, so
the final change standardizes on `$HOME/.cache/bazel-repo-cache` and
makes cache restore non-fatal.
## What Changed
- Expose one repository-cache path from
`.github/actions/setup-bazel-ci/action.yml` and export that path as
`BAZEL_REPOSITORY_CACHE` so `run-bazel-ci.sh` passes it to Bazel after
`--config=ci-*`.
- Move `actions/cache/restore` out of the composite action into
`.github/workflows/bazel.yml`, and make restore failures non-fatal
there.
- Save exactly the exported cache path in `.github/workflows/bazel.yml`.
- Remove `common:ci-windows
--repository_cache=D:/a/.cache/bazel-repo-cache` from `.bazelrc` so the
Windows CI config no longer disagrees with the workflow cache path.
- Pass `--skip_incompatible_explicit_targets` in the Windows `Bazel
clippy` job so incompatible explicit targets do not fail analysis while
the lint aspect still traverses compatible Rust dependencies.
## Verification
- Parsed `.github/actions/setup-bazel-ci/action.yml` and
`.github/workflows/bazel.yml` with Ruby's YAML loader.
- Resubmitted PR `#16740`; CI is rerunning on the amended commit.
## Why
`cargo clippy --tests` was catching warnings in inline `#[cfg(test)]`
code that the Bazel PR Clippy lane missed. The existing Bazel invocation
linted `//codex-rs/...`, but that did not apply Clippy to the generated
manual `rust_test` binaries, so warnings in targets such as
`//codex-rs/state:state-unit-tests-bin` only surfaced as plain compile
warnings instead of failing the lint job.
## What Changed
- added `scripts/list-bazel-clippy-targets.sh` to expand the Bazel
Clippy target set with the generated manual `rust_test` rules while
still excluding `//codex-rs/v8-poc:all`
- updated `.github/workflows/bazel.yml` to use that expanded target list
in the Bazel Clippy PR job
- updated `just bazel-clippy` to use the same target expansion locally
- updated `.github/workflows/README.md` to document that the Bazel PR
lint lane now covers inline `#[cfg(test)]` code
## Verification
- `./scripts/list-bazel-clippy-targets.sh` includes
`//codex-rs/state:state-unit-tests-bin`
- `bazel build --config=clippy -- //codex-rs/state:state-unit-tests-bin`
now fails with the same unused import in `state/src/runtime/logs.rs`
that `cargo clippy --tests` reports
Michael Bolin ·