naja/.github/workflows/macos-bazel.yml at main · nanocoh/naja · GitHub

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name: macOS Bazel Build

# CMake is naja's primary build system (see macos-build.yml) -- this
# workflow keeps the Bazel side (MODULE.bazel, BUILD.bazel throughout
# the tree) validated as a smoke test rather than as CI's main gate. See
# CLAUDE.md's "Build systems: CMake (primary) + Bazel (validated smoke
# test)" section, and internal/bazel-migration-plan.md for the full
# history of how this was built out and why it's not CI's primary path.

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

jobs:
  build:
    runs-on: ${{ matrix.os }}

    strategy:
      matrix:
        os: [macos-26, macos-15]

    steps:
    - uses: actions/checkout@v7
      # No `submodules: true` -- Bazel fetches naja-if/naja-verilog/slang
      # itself (MODULE.bazel), doesn't use the thirdparty/ checkouts.
      # dependency-sync-check.yml is what keeps these two build systems'
      # pins from silently drifting apart.

    - name: Install dependencies
      # tomlplusplus here is for slang's *own* internal find_package()
      # (bazel/thirdparty/slang_host_prefixes.bzl queries `brew --prefix
      # tomlplusplus` for slang's CMAKE_PREFIX_PATH) -- unrelated to this
      # repo's own @tomlplusplus (vendored via git_repository since
      # libtomlplusplus-dev isn't apt-installable on Ubuntu; still needed
      # here regardless of that).
      run: |
        brew install capnp tbb bison flex boost fmt tomlplusplus pkg-config

    - name: Set Homebrew paths
      # Xcode's own toolchain ships an ancient BSD bison/flex
      # (/Applications/Xcode*/.../usr/bin) that otherwise shadows
      # Homebrew's -- e.g. that bison doesn't understand GNU bison's
      # -Wconflicts-sr flag (bazel/lefdef_bison.bzl,
      # bazel/thirdparty/*/system_tool.bzl's `which("bison")` picks
      # whichever comes first on PATH).
      run: |
        echo "/usr/local/opt/flex/bin" >> $GITHUB_PATH
        echo "/usr/local/opt/bison/bin" >> $GITHUB_PATH
        echo "/opt/homebrew/opt/flex/bin" >> $GITHUB_PATH
        echo "/opt/homebrew/opt/bison/bin" >> $GITHUB_PATH

    - uses: bazel-contrib/setup-bazel@0.19.0
      with:
        bazelisk-cache: true
        disk-cache: ${{ github.workflow }}-${{ matrix.os }}
        repository-cache: true

    - name: Build
      # --jobs=auto: Bazel already parallelizes across all local cores by
      # default (unlike make/CMake's default serial build) -- spelled out
      # explicitly here for clarity/predictability rather than because
      # it's functionally required.
      run: bazel build //... --jobs=auto

    - name: Test
      run: bazel test //... --test_output=errors --jobs=auto