Files
codex/.github/workflows
Michael Bolin 7c79a18688 linux-sandbox: use standalone bundled bwrap (#21255)
**Summary**
- Add `codex-bwrap`, a standalone `bwrap` binary built from the existing
vendored bubblewrap sources.
- Remove the linked vendored bwrap path from `codex-linux-sandbox`;
runtime now prefers system `bwrap` and falls back to bundled
`codex-resources/bwrap`.
- Add bundled SHA-256 verification with missing/all-zero digest as the
dev-mode skip value, then exec the verified file through
`/proc/self/fd`.
- Keep `launcher.rs` focused on choosing and dispatching the preferred
launcher. Bundled lookup, digest verification, and bundled exec now live
in `linux-sandbox/src/bundled_bwrap.rs`; Bazel runfiles lookup lives in
`linux-sandbox/src/bazel_bwrap.rs`; shared argv/fd exec helpers live in
`linux-sandbox/src/exec_util.rs`.
- Teach Bazel tests to surface the Bazel-built `//codex-rs/bwrap:bwrap`
through `CARGO_BIN_EXE_bwrap`; `codex-linux-sandbox` only honors that
fallback in debug Bazel runfiles environments so release/user runtime
lookup stays tied to `codex-resources/bwrap`.
- Allow `codex-exec-server` filesystem helpers to preserve just the
Bazel bwrap/runfiles variables they need in debug Bazel builds, since
those helpers intentionally rebuild a small environment before spawning
`codex-linux-sandbox`.
- Verify the Bazel bwrap target in Linux release CI with a build-only
check. Running `bwrap --version` is too strong for GitHub runners
because bubblewrap still attempts namespace setup there.

**Verification**
- Latest update: `cargo test -p codex-linux-sandbox`
- Latest update: `just fix -p codex-linux-sandbox`
- `cargo check --target x86_64-unknown-linux-gnu -p codex-linux-sandbox`
could not run locally because this macOS machine does not have
`x86_64-linux-gnu-gcc`; GitHub Linux Bazel CI is expected to cover the
Linux-only modules.
- Earlier in this PR: `cargo test -p codex-bwrap`
- Earlier in this PR: `cargo test -p codex-exec-server`
- Earlier in this PR: `cargo check --release -p codex-exec-server`
- Earlier in this PR: `just fix -p codex-linux-sandbox -p
codex-exec-server`
- Earlier in this PR: `bazel test --nobuild
//codex-rs/linux-sandbox:linux-sandbox-all-test
//codex-rs/core:core-all-test
//codex-rs/exec-server:exec-server-file_system-test
//codex-rs/app-server:app-server-all-test` (analysis completed; Bazel
then refuses to run tests under `--nobuild`)
- Earlier in this PR: `bazel build --nobuild //codex-rs/bwrap:bwrap`
- Prior to this update: `just bazel-lock-update`, `just
bazel-lock-check`, and YAML parse check for
`.github/workflows/bazel.yml`


---
[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/openai/codex/pull/21255).
* #21257
* #21256
* __->__ #21255
2026-05-06 12:23:16 -07:00
..
2026-05-01 18:15:38 +02:00
2026-05-01 18:15:38 +02:00

Workflow Strategy

The workflows in this directory are split so that pull requests get fast, review-friendly signal while main still gets the full cross-platform verification pass.

Pull Requests

  • bazel.yml is the main pre-merge verification path for Rust code. It runs Bazel test and Bazel clippy on the supported Bazel targets, including the generated Rust test binaries needed to lint inline #[cfg(test)] code.
  • rust-ci.yml keeps the Cargo-native PR checks intentionally small:
    • cargo fmt --check
    • cargo shear
    • argument-comment-lint on Linux, macOS, and Windows
    • tools/argument-comment-lint package tests when the lint or its workflow wiring changes

Post-Merge On main

  • bazel.yml also runs on pushes to main. This re-verifies the merged Bazel path and helps keep the BuildBuddy caches warm.
  • rust-ci-full.yml is the full Cargo-native verification workflow. It keeps the heavier checks off the PR path while still validating them after merge:
    • the full Cargo clippy matrix
    • the full Cargo nextest matrix
    • release-profile Cargo builds
    • cross-platform argument-comment-lint
    • Linux remote-env tests

Rule Of Thumb

  • If a build/test/clippy check can be expressed in Bazel, prefer putting the PR-time version in bazel.yml.
  • Keep rust-ci.yml fast enough that it usually does not dominate PR latency.
  • Reserve rust-ci-full.yml for heavyweight Cargo-native coverage that Bazel does not replace yet.