Files
codex/.bazelrc
Michael Bolin fce0f76d57 build: migrate argument-comment-lint to a native Bazel aspect (#16106)
## Why

`argument-comment-lint` had become a PR bottleneck because the repo-wide
lane was still effectively running a `cargo dylint`-style flow across
the workspace instead of reusing Bazel's Rust dependency graph. That
kept the lint enforced, but it threw away the main benefit of moving
this job under Bazel in the first place: metadata reuse and cacheable
per-target analysis in the same shape as Clippy.

This change moves the repo-wide lint onto a native Bazel Rust aspect so
Linux and macOS can lint `codex-rs` without rebuilding the world
crate-by-crate through the wrapper path.

## What Changed

- add a nightly Rust toolchain with `rustc-dev` for Bazel and a
dedicated crate-universe repo for `tools/argument-comment-lint`
- add `tools/argument-comment-lint/driver.rs` and
`tools/argument-comment-lint/lint_aspect.bzl` so Bazel can run the lint
as a custom `rustc_driver`
- switch repo-wide `just argument-comment-lint` and the Linux/macOS
`rust-ci` lanes to `bazel build --config=argument-comment-lint
//codex-rs/...`
- keep the Python/DotSlash wrappers as the package-scoped fallback path
and as the current Windows CI path
- gate the Dylint entrypoint behind a `bazel_native` feature so the
Bazel-native library avoids the `dylint_*` packaging stack
- update the aspect runtime environment so the driver can locate
`rustc_driver` correctly under remote execution
- keep the dedicated `tools/argument-comment-lint` package tests and
wrapper unit tests in CI so the source and packaged entrypoints remain
covered

## Verification

- `python3 -m unittest discover -s tools/argument-comment-lint -p
'test_*.py'`
- `cargo test` in `tools/argument-comment-lint`
- `bazel build
//tools/argument-comment-lint:argument-comment-lint-driver
--@rules_rust//rust/toolchain/channel=nightly`
- `bazel build --config=argument-comment-lint
//codex-rs/utils/path-utils:all`
- `bazel build --config=argument-comment-lint
//codex-rs/rollout:rollout`







---
[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/openai/codex/pull/16106).
* #16120
* __->__ #16106
2026-03-28 12:41:56 -07:00

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common --repo_env=BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1
common --repo_env=BAZEL_NO_APPLE_CPP_TOOLCHAIN=1
# Dummy xcode config so we don't need to build xcode_locator in repo rule.
common --xcode_version_config=//:disable_xcode
common --disk_cache=~/.cache/bazel-disk-cache
common --repo_contents_cache=~/.cache/bazel-repo-contents-cache
common --repository_cache=~/.cache/bazel-repo-cache
common --remote_cache_compression
startup --experimental_remote_repo_contents_cache
common --experimental_platform_in_output_dir
# Runfiles strategy rationale: codex-rs/utils/cargo-bin/README.md
common --noenable_runfiles
common --enable_platform_specific_config
common:linux --host_platform=//:local_linux
common:windows --host_platform=//:local_windows
common --@rules_cc//cc/toolchains/args/archiver_flags:use_libtool_on_macos=False
common --@llvm//config:experimental_stub_libgcc_s
# TODO(zbarsky): rules_rust doesn't implement this flag properly with remote exec...
# common --@rules_rust//rust/settings:pipelined_compilation
common --incompatible_strict_action_env
# Not ideal, but We need to allow dotslash to be found
common:linux --test_env=PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
common:macos --test_env=PATH=/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
# Pass through some env vars Windows needs to use powershell?
common:windows --test_env=PATH
common:windows --test_env=SYSTEMROOT
common:windows --test_env=COMSPEC
common:windows --test_env=WINDIR
common --test_output=errors
common --bes_results_url=https://app.buildbuddy.io/invocation/
common --bes_backend=grpcs://remote.buildbuddy.io
common --remote_cache=grpcs://remote.buildbuddy.io
common --remote_download_toplevel
common --nobuild_runfile_links
common --remote_timeout=3600
common --noexperimental_throttle_remote_action_building
common --experimental_remote_execution_keepalive
common --grpc_keepalive_time=30s
# This limits both in-flight executions and concurrent downloads. Even with high number
# of jobs execution will still be limited by CPU cores, so this just pays a bit of
# memory in exchange for higher download concurrency.
common --jobs=30
common:remote --extra_execution_platforms=//:rbe
common:remote --remote_executor=grpcs://remote.buildbuddy.io
common:remote --jobs=800
# TODO(team): Evaluate if this actually helps, zbarsky is not sure, everything seems bottlenecked on `core` either way.
# Enable pipelined compilation since we are not bound by local CPU count.
#common:remote --@rules_rust//rust/settings:pipelined_compilation
# GitHub Actions CI configs.
common:ci --remote_download_minimal
common:ci --keep_going
common:ci --verbose_failures
common:ci --build_metadata=REPO_URL=https://github.com/openai/codex.git
common:ci --build_metadata=ROLE=CI
common:ci --build_metadata=VISIBILITY=PUBLIC
# Disable disk cache in CI since we have a remote one and aren't using persistent workers.
common:ci --disk_cache=
# Shared config for the main Bazel CI workflow.
common:ci-bazel --config=ci
common:ci-bazel --build_metadata=TAG_workflow=bazel
# Shared config for Bazel-backed Rust linting.
build:clippy --aspects=@rules_rust//rust:defs.bzl%rust_clippy_aspect
build:clippy --output_groups=+clippy_checks
build:clippy --@rules_rust//rust/settings:clippy.toml=//codex-rs:clippy.toml
# Shared config for Bazel-backed argument-comment-lint.
build:argument-comment-lint --aspects=//tools/argument-comment-lint:lint_aspect.bzl%rust_argument_comment_lint_aspect
build:argument-comment-lint --output_groups=argument_comment_lint_checks
build:argument-comment-lint --@rules_rust//rust/toolchain/channel=nightly
# Rearrange caches on Windows so they're on the same volume as the checkout.
common:ci-windows --config=ci-bazel
common:ci-windows --build_metadata=TAG_os=windows
common:ci-windows --repo_contents_cache=D:/a/.cache/bazel-repo-contents-cache
common:ci-windows --repository_cache=D:/a/.cache/bazel-repo-cache
# We prefer to run the build actions entirely remotely so we can dial up the concurrency.
# We have platform-specific tests, so we want to execute the tests on all platforms using the strongest sandboxing available on each platform.
# On linux, we can do a full remote build/test, by targeting the right (x86/arm) runners, so we have coverage of both.
# Linux crossbuilds don't work until we untangle the libc constraint mess.
common:ci-linux --config=ci-bazel
common:ci-linux --build_metadata=TAG_os=linux
common:ci-linux --config=remote
common:ci-linux --strategy=remote
common:ci-linux --platforms=//:rbe
# On mac, we can run all the build actions remotely but test actions locally.
common:ci-macos --config=ci-bazel
common:ci-macos --build_metadata=TAG_os=macos
common:ci-macos --config=remote
common:ci-macos --strategy=remote
common:ci-macos --strategy=TestRunner=darwin-sandbox,local
# Linux-only V8 CI config.
common:ci-v8 --config=ci
common:ci-v8 --build_metadata=TAG_workflow=v8
common:ci-v8 --build_metadata=TAG_os=linux
common:ci-v8 --config=remote
common:ci-v8 --strategy=remote
# Optional per-user local overrides.
try-import %workspace%/user.bazelrc