cibuildwheel.yml

name: Build

on:
  push:
    branches: [main]
  pull_request:
    branches: ["*"]
  schedule:  # runs on last commit on main branch
    - cron: "0 1 * * 1"  # every Monday at 1AM, for weekly wheels
  workflow_dispatch: # allows you to trigger manually

permissions: {}

# When this workflow is queued, automatically cancel any previous running
# or pending jobs from the same branch
concurrency:
  group: cidbuildwheel-${{ github.ref }}
  cancel-in-progress: true

jobs:
  maybe_skip_scheduled:
    name: Determine whether to skip scheduled run
    runs-on: ubuntu-latest
    outputs:
      skip: ${{ env.skip }}
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6

      - name: On explosion main, skip scheduled run if no changes in last week
        if: github.event_name == 'schedule' && github.repository_owner == 'explosion'
        run: |
          LAST_COMMIT_TIME=$(git log -1 --format=%ct)
          CURRENT_TIME=$(date +%s)
          TIME_DIFF=$((CURRENT_TIME - LAST_COMMIT_TIME))
          echo "Time since last commit: $TIME_DIFF seconds"
          if [ $TIME_DIFF -gt 604800 ]; then
            echo "No changes in the last week. Skipping build."
            echo "skip=true" >> $GITHUB_ENV
          else
            echo "Changes detected in the last week. Proceeding with build."
            echo "skip=false" >> $GITHUB_ENV
          fi

      - name: Always skip scheduled runs on forks
        if: github.event_name == 'schedule' && github.repository_owner != 'explosion'
        run: echo "skip=true" >> $GITHUB_ENV

      - name: Never skip non-scheduled runs
        if: github.event_name != 'schedule'
        run: echo "skip=false" >> $GITHUB_ENV

  build_wheels:
    name: Build wheels on ${{ matrix.os }}
    needs: maybe_skip_scheduled
    if: needs.maybe_skip_scheduled.outputs.skip == 'false'
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: true        
      matrix:
        os:
          - ubuntu-latest  # x64
          - ubuntu-24.04-arm  # ARM
          - macos-15-intel  # x64
          - macos-latest  # ARM
          - windows-latest  # x64
          - windows-11-arm  # ARM

    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6

      # See https://cibuildwheel.pypa.io/en/1.x/cpp_standards/
      - name: Setup MSVC on Windows x64
        if: matrix.os == 'windows-latest'
        uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756 # v1

      - name: Setup MSVC on Windows ARM64
        if: matrix.os == 'windows-11-arm'
        uses: bus1/cabuild/action/msdevshell@e22aba57d6e74891d059d66501b6b5aed8123c4d  # v1
        with:
          architecture: arm64

      # Install LLVM on Windows
      - name: Install LLVM on Windows x64
        if: matrix.os == 'windows-latest'
        run: |
          choco install llvm --version=18.1.8 -y --force
          echo "C:\Program Files\LLVM\bin" >> $env:GITHUB_PATH

      - name: Install LLVM on Windows ARM64
        if: matrix.os == 'windows-11-arm'
        shell: pwsh
        run: |
          Invoke-WebRequest https://github.com/llvm/llvm-project/releases/download/llvmorg-20.1.6/LLVM-20.1.6-woa64.exe -UseBasicParsing -OutFile LLVM-woa64.exe
          Start-Process -FilePath ".\LLVM-woa64.exe" -ArgumentList "/S" -Wait
          echo "C:\Program Files\LLVM\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
          echo "CC=clang-cl" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append

      - name: Debug env
        run: env

      - name: Build wheels
        uses: pypa/cibuildwheel@45616d2b12f67573cd48b844c047f8cda2809f43 # v3.3.0
        env:
          CIBW_ARCHS_LINUX: auto
          DISTUTILS_USE_SDK: 1
          MSSdk: 1
          AR: llvm-ar
          AS: llvm-as
          CC: clang
          RANLIB: echo
          CIBW_BUILD_VERBOSITY: 5
        with:
          package-dir: .
          output-dir: wheelhouse
          config-file: "{package}/pyproject.toml"

      - uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5
        with:
          name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
          path: ./wheelhouse/*.whl

  build_sdist:
    name: Build source distribution
    needs: maybe_skip_scheduled
    if: needs.maybe_skip_scheduled.outputs.skip == 'false'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6

      - name: Build sdist
        run: pipx run build --sdist

      - uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5
        with:
          name: cibw-sdist
          path: dist/*.tar.gz

  create_release:
    needs: [maybe_skip_scheduled, build_wheels, build_sdist]
    if: needs.maybe_skip_scheduled.outputs.skip == 'false'
    runs-on: ubuntu-latest
    permissions:
      contents: write
      checks: write
      actions: read
      issues: read
      packages: write
      pull-requests: read
      repository-projects: read
      statuses: read
    steps:
      - name: Get the tag name and determine if it's a prerelease
        id: get_tag_info
        run: |
          FULL_TAG=${GITHUB_REF#refs/tags/}
          if [[ $FULL_TAG == release-* ]]; then
            TAG_NAME=${FULL_TAG#release-}
            IS_PRERELEASE=false
          elif [[ $FULL_TAG == prerelease-* ]]; then
            TAG_NAME=${FULL_TAG#prerelease-}
            IS_PRERELEASE=true
          else
            TAG_NAME=$FULL_TAG
            IS_PRERELEASE=false
          fi
          echo "FULL_TAG=$TAG_NAME" >> $GITHUB_ENV
          echo "TAG_NAME=$TAG_NAME" >> $GITHUB_ENV
          echo "IS_PRERELEASE=$IS_PRERELEASE" >> $GITHUB_ENV

      - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5
        with:
          # unpacks all CIBW artifacts into dist/
          pattern: cibw-*
          path: dist
          merge-multiple: true

      - name: List dist directory
        run: ls -l dist

      - name: Create Draft Release
        id: create_release
        uses: softprops/action-gh-release@153bb8e04406b158c6c84fc1615b65b24149a1fe # v2
        if: (startsWith(github.ref, 'refs/tags/release-') || startsWith(github.ref, 'refs/tags/prerelease-')) && github.event_name != 'schedule' && github.repository_owner == 'explosion'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          name: ${{ env.TAG_NAME }}
          draft: true
          prerelease: ${{ env.IS_PRERELEASE }}
          files: "./dist/*" 

      - name: Upload nightly wheels
        if: (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch') && github.repository_owner == 'explosion' && github.ref == 'refs/heads/main'
        uses: scientific-python/upload-nightly-action@b36e8c0c10dbcfd2e05bf95f17ef8c14fd708dbf # 0.6.2
        with:
          artifacts_path: dist
          anaconda_nightly_upload_token: ${{ secrets.ANACONDA_ORG_UPLOAD_TOKEN }}