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zbarsky-openai
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## Why Windows MSVC builds relied on installed C++ toolchains, and V8 snapshot generation required native Windows execution. Cross-compiling V8 also needs a Windows snapshot generator to preserve Windows unwind metadata. ## What changed - Use the registered hermetic LLVM toolchain and declared Microsoft SDK for Windows MSVC builds, with static CRT linkage and the toolchain's declared `lld-link` for Rust. - Run Windows V8 snapshot generators natively or through `rules_wine` on Linux, preserving target CPU, OS, and sandbox settings. Keep separate archive and binding pairs for the workspace's ISO stdio ABI and the distributed MSVC stdio ABI. - Update build dependencies and bindgen, scope V8's Chromium libc++ settings to its own targets, and adapt native voice dependencies for clang-cl and Windows ARM64. - Build SQLite directly with Bazel and give `openssl-sys` an explicit build using Bazel's OpenSSL. - Remove build-worker source-directory dependencies from Bazel resource lookup, schema output discovery, and snapshot paths; embed assets in debug builds as well. GitOrigin-RevId: fd224d9d28d73a67baf90f6d73c6079d60f20351
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
- Required checks run against GitHub's synthetic merge commit, not the pull
request head alone. This includes changes already on
mainand catches conflicts before they reach the branch. bazel.ymlis the main pre-merge verification path for Rust code. It runs Bazeltestand Bazelclippyon the supported Bazel targets, including the generated Rust test binaries needed to lint inline#[cfg(test)]code.rust-ci.ymlkeeps the Cargo-native PR checks intentionally small:cargo fmt --checkcargo shearargument-comment-linton Linux, macOS, and Windowstools/argument-comment-lintpackage tests when the lint or its workflow wiring changes
Post-Merge On main
bazel.ymlalso runs on pushes tomain. This re-verifies the merged Bazel path and helps keep the BuildBuddy caches warm.rust-ci-full.ymlis the full Cargo-native verification workflow. It keeps the heavier checks off the PR path while still validating them after merge:- the full Cargo
clippymatrix - the full Cargo
nextestmatrix via per-platform archive-backed shards - Windows ARM64 nextest archives cross-compiled on Windows x64, then replayed on native Windows ARM64 shards
- release-profile Cargo builds
- cross-platform
argument-comment-lint - Linux remote-env tests
- the full Cargo
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.ymlfast enough that it usually does not dominate PR latency. - Reserve
rust-ci-full.ymlfor heavyweight Cargo-native coverage that Bazel does not replace yet.