Michael Bolin 19f0d196d1 ci: run Windows argument-comment-lint via native Bazel (#16120)
## Why

Follow-up to #16106.

`argument-comment-lint` already runs as a native Bazel aspect on Linux
and macOS, but Windows is still the long pole in `rust-ci`. To move
Windows onto the same native Bazel lane, the toolchain split has to let
exec-side helper binaries build in an MSVC environment while still
linting repo crates as `windows-gnullvm`.

Pushing the Windows lane onto the native Bazel path exposed a second
round of Windows-only issues in the mixed exec-toolchain plumbing after
the initial wrapper/target fixes landed.

## What Changed

- keep the Windows lint lanes on the native Bazel/aspect path in
`rust-ci.yml` and `rust-ci-full.yml`
- add a dedicated `local_windows_msvc` platform for exec-side helper
binaries while keeping `local_windows` as the `windows-gnullvm` target
platform
- patch `rules_rust` so `repository_set(...)` preserves explicit
exec-platform constraints for the generated toolchains, keep the
Windows-specific bootstrap/direct-link fixes needed for the nightly lint
driver, and expose exec-side `rustc-dev` `.rlib`s to the MSVC sysroot
- register the custom Windows nightly toolchain set with MSVC exec
constraints while still exposing both `x86_64-pc-windows-msvc` and
`x86_64-pc-windows-gnullvm` targets
- enable `dev_components` on the custom Windows nightly repository set
so the MSVC exec helper toolchain actually downloads the
compiler-internal crates that `clippy_utils` needs
- teach `run-argument-comment-lint-bazel.sh` to enumerate concrete
Windows Rust rules, normalize the resulting labels, and skip explicitly
requested incompatible targets instead of failing before the lint run
starts
- patch `rules_rust` build-script env propagation so exec-side
`windows-msvc` helper crates drop forwarded MinGW include and linker
search paths as whole flag/path pairs instead of emitting malformed
`CFLAGS`, `CXXFLAGS`, and `LDFLAGS`
- export the Windows VS/MSVC SDK environment in `setup-bazel-ci` and
pass the relevant variables through `run-bazel-ci.sh` via `--action_env`
/ `--host_action_env` so Bazel build scripts can see the MSVC and UCRT
headers on native Windows runs
- add inline comments to the Windows `setup-bazel-ci` MSVC environment
export step so it is easier to audit how `vswhere`, `VsDevCmd.bat`, and
the filtered `GITHUB_ENV` export fit together
- patch `aws-lc-sys` to skip its standalone `memcmp` probe under Bazel
`windows-msvc` build-script environments, which avoids a Windows-native
toolchain mismatch that blocked the lint lane before it reached the
aspect execution
- patch `aws-lc-sys` to prefer its bundled `prebuilt-nasm` objects for
Bazel `windows-msvc` build-script runs, which avoids missing
`generated-src/win-x86_64/*.asm` runfiles in the exec-side helper
toolchain
- annotate the Linux test-only callsites in `codex-rs/linux-sandbox` and
`codex-rs/core` that the wider native lint coverage surfaced

## Patches

This PR introduces a large patch stack because the Windows Bazel lint
lane currently depends on behavior that upstream dependencies do not
provide out of the box in the mixed `windows-gnullvm` target /
`windows-msvc` exec-toolchain setup.

- Most of the `rules_rust` patches look like upstream candidates rather
than OpenAI-only policy. Preserving explicit exec-platform constraints,
forwarding the right MSVC/UCRT environment into exec-side build scripts,
exposing exec-side `rustc-dev` artifacts, and keeping the Windows
bootstrap/linker behavior coherent all look like fixes to the Bazel/Rust
integration layer itself.
- The two `aws-lc-sys` patches are more tactical. They special-case
Bazel `windows-msvc` build-script environments to avoid a `memcmp` probe
mismatch and missing NASM runfiles. Those may be harder to upstream
as-is because they rely on Bazel-specific detection instead of a general
Cargo/build-script contract.
- Short term, carrying these patches in-tree is reasonable because they
unblock a real CI lane and are still narrow enough to audit. Long term,
the goal should not be to keep growing a permanent local fork of either
dependency.
- My current expectation is that the `rules_rust` patches are less
controversial and should be broken out into focused upstream proposals,
while the `aws-lc-sys` patches are more likely to be temporary escape
hatches unless that crate wants a more general hook for hermetic build
systems.

Suggested follow-up plan:

1. Split the `rules_rust` deltas into upstream-sized PRs or issues with
minimized repros.
2. Revisit the `aws-lc-sys` patches during the next dependency bump and
see whether they can be replaced by an upstream fix, a crate upgrade, or
a cleaner opt-in mechanism.
3. Treat each dependency update as a chance to delete patches one by one
so the local patch set only contains still-needed deltas.

## Verification

- `./.github/scripts/run-argument-comment-lint-bazel.sh
--config=argument-comment-lint --keep_going`
- `RUNNER_OS=Windows
./.github/scripts/run-argument-comment-lint-bazel.sh --nobuild
--config=argument-comment-lint --platforms=//:local_windows
--keep_going`
- `cargo test -p codex-linux-sandbox`
- `cargo test -p codex-core shell_snapshot_tests`
- `just argument-comment-lint`

## References

- #16106
19f0d196d1 · 2026-03-30 15:32:04 -07:00
4,958 Commits
2026-03-26 16:50:07 -07:00
2025-04-16 12:56:08 -04:00
2026-02-06 14:41:53 +01:00
2025-04-16 12:56:08 -04:00
2026-03-10 04:11:31 +00:00

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