ci-cd.yml

---

name: CI/CD

on:
  merge_group:
  push:
    branches:
    - master
    - >-
      [0-9].[0-9]+
    tags:
    - v*
  pull_request:
    branches:
    - master
    - >-
      [0-9].[0-9]+
  schedule:
  - cron: 0 6 * * *  # Daily 6AM UTC build


concurrency:
  group: ${{ github.ref }}-${{ github.workflow }}
  cancel-in-progress: true


env:
  COLOR: >-  # Supposedly, pytest or coveragepy use this
    yes
  FORCE_COLOR: 1  # Request colored output from CLI tools supporting it
  MYPY_FORCE_COLOR: 1  # MyPy's color enforcement
  PIP_DISABLE_PIP_VERSION_CHECK: 1
  PIP_NO_PYTHON_VERSION_WARNING: 1
  PIP_NO_WARN_SCRIPT_LOCATION: 1
  PRE_COMMIT_COLOR: always
  PROJECT_NAME: frozenlist
  PY_COLORS: 1  # Recognized by the `py` package, dependency of `pytest`
  PYTHONIOENCODING: utf-8
  PYTHONUTF8: 1
  PYTHON_LATEST: 3.x


jobs:

  pre-setup:
    name: ⚙️ Pre-set global build settings
    runs-on: ubuntu-latest
    timeout-minutes: 1
    defaults:
      run:
        shell: python
    outputs:
      # NOTE: These aren't env vars because the `${{ env }}` context is
      # NOTE: inaccessible when passing inputs to reusable workflows.
      dists-artifact-name: python-package-distributions
      sdist-name: ${{ env.PROJECT_NAME }}-*.tar.gz
      wheel-name: ${{ env.PROJECT_NAME }}-*.whl
    steps:
    - run: >-
        print('No-op')


  build-pure-python-dists:
    name: 📦 Build distribution packages
    needs:
    - pre-setup
    runs-on: ubuntu-latest
    timeout-minutes: 1
    outputs:
      sdist-filename: >-
        ${{ steps.dist-filenames-detection.outputs.sdist-filename }}
      wheel-filename: >-
        ${{ steps.dist-filenames-detection.outputs.wheel-filename }}
    steps:
    - name: Checkout project
      uses: actions/checkout@v4
    - name: Set up Python
      uses: actions/setup-python@v5
      with:
        python-version: ${{ env.PYTHON_LATEST }}
        cache: pip
        cache-dependency-path:
          requirements/*.txt
    - name: Install core libraries for build
      run: python -Im pip install build
    - name: Build sdists and pure-python wheel
      env:
        PIP_CONSTRAINT: requirements/ci.txt
      run: python -Im build --config-setting=pure-python=true
    - name: Determine actual created filenames
      id: dist-filenames-detection
      run: >-
        {
        echo -n sdist-filename=
        ;
        basename "$(ls -1 dist/${{ needs.pre-setup.outputs.sdist-name }})"
        ;
        echo -n wheel-filename=
        ;
        basename "$(ls -1 dist/${{ needs.pre-setup.outputs.wheel-name }})"
        ;
        }
        >> "${GITHUB_OUTPUT}"
    - name: Upload built artifacts for testing
      uses: actions/upload-artifact@v4
      with:
        if-no-files-found: error
        name: ${{ needs.pre-setup.outputs.dists-artifact-name  }}
        # NOTE: Exact expected file names are specified here
        # NOTE: as a safety measure — if anything weird ends
        # NOTE: up being in this dir or not all dists will be
        # NOTE: produced, this will fail the workflow.
        path: |
          dist/${{ steps.dist-filenames-detection.outputs.sdist-filename }}
          dist/${{ steps.dist-filenames-detection.outputs.wheel-filename }}
        retention-days: 15

  lint:
    uses: ./.github/workflows/reusable-linters.yml
    secrets:
      codecov-token: ${{ secrets.CODECOV_TOKEN }}

  build-wheels-for-tested-arches:
    name: >-  # ${{ '' } is a hack to nest jobs under the same sidebar category
      📦 Build wheels for tested arches${{ '' }}
    needs:
    - build-pure-python-dists
    - pre-setup  # transitive, for accessing settings
    strategy:
      matrix:
        os:
        - ubuntu
        - windows
        - macos
    uses: ./.github/workflows/reusable-build-wheel.yml
    with:
      os: ${{ matrix.os }}
      wheel-tags-to-skip: >-
        ${{
        (github.event_name != 'push' || !contains(github.ref, 'refs/tags/'))
        && '*_i686
        *-macosx_universal2
        *-musllinux_*
        *-win32
        *_arm64
        pp*'
        || ''
        }}
      source-tarball-name: >-
        ${{ needs.build-pure-python-dists.outputs.sdist-filename }}
      dists-artifact-name: ${{ needs.pre-setup.outputs.dists-artifact-name }}
      cython-tracing: >-  # Cython line tracing for coverage collection
        ${{
          (
            github.event_name == 'push'
            && contains(github.ref, 'refs/tags/')
          )
          && 'false'
          || 'true'
        }}

  test:
    name: Test
    needs:
    - build-pure-python-dists  # transitive, for accessing settings
    - build-wheels-for-tested-arches
    - pre-setup  # transitive, for accessing settings
    strategy:
      matrix:
        pyver:
        - 3.13
        - 3.12
        - 3.11
        - >-
          3.10
        - 3.9
        - 3.8
        no-extensions: ['', 'Y']
        os:
        - ubuntu-latest
        - macos-latest
        - windows-latest
        experimental: [false]
        exclude:
        - os: macos-latest
          no-extensions: Y
        - os: windows-latest
          no-extensions: Y
        include:
        - pyver: pypy-3.10
          no-extensions: Y
          experimental: false
          os: ubuntu-latest
        - pyver: pypy-3.9
          no-extensions: Y
          experimental: false
          os: ubuntu-latest
        - pyver: pypy-3.8
          no-extensions: Y
          experimental: false
          os: ubuntu-latest
      fail-fast: false
    runs-on: ${{ matrix.os }}
    timeout-minutes: 15
    continue-on-error: ${{ matrix.experimental }}
    steps:
    - name: Retrieve the project source from an sdist inside the GHA artifact
      uses: re-actors/checkout-python-sdist@release/v2
      with:
        source-tarball-name: >-
          ${{ needs.build-pure-python-dists.outputs.sdist-filename }}
        workflow-artifact-name: >-
          ${{ needs.pre-setup.outputs.dists-artifact-name }}
    - name: Download distributions
      uses: actions/download-artifact@v4
      with:
        path: dist
        pattern: ${{ needs.pre-setup.outputs.dists-artifact-name }}*
        merge-multiple: true

    - name: Setup Python ${{ matrix.pyver }}
      id: python-install
      uses: actions/setup-python@v5
      with:
        python-version: ${{ matrix.pyver }}
        allow-prereleases: true
        cache: pip
        cache-dependency-path: requirements/*.txt
    - name: Install dependencies
      uses: py-actions/py-dependency-install@v4
      with:
        path: requirements/ci.txt
    - name: Determine pre-compiled compatible wheel
      env:
        # NOTE: When `pip` is forced to colorize output piped into `jq`,
        # NOTE: the latter can't parse it. So we're overriding the color
        # NOTE: preference here via https://no-color.org.
        # NOTE: Setting `FORCE_COLOR` to any value (including 0, an empty
        # NOTE: string, or a "YAML null" `~`) doesn't have any effect and
        # NOTE: `pip` (through its verndored copy of `rich`) treats the
        # NOTE: presence of the variable as "force-color" regardless.
        #
        # NOTE: This doesn't actually work either, so we'll resort to unsetting
        # NOTE: in the Bash script.
        # NOTE: Ref: https://github.com/Textualize/rich/issues/2622
        NO_COLOR: 1
      id: wheel-file
      run: >
        echo -n path= | tee -a "${GITHUB_OUTPUT}"


        unset FORCE_COLOR


        python
        -X utf8
        -u -I
        -m pip install
        --find-links=./dist
        --no-index
        '${{ env.PROJECT_NAME }}'
        --force-reinstall
        --no-color
        --no-deps
        --only-binary=:all:
        --dry-run
        --report=-
        --quiet
        | jq --raw-output .install[].download_info.url
        | tee -a "${GITHUB_OUTPUT}"
      shell: bash
    - name: Self-install
      run: python -Im pip install '${{ steps.wheel-file.outputs.path }}'
    - name: Produce the C-files for the Coverage.py Cython plugin
      if: >-  # Only works if the dists were built with line tracing
        !matrix.no-extensions
        && (
          github.event_name != 'push'
          || !contains(github.ref, 'refs/tags/')
        )
      env:
        PYTHONPATH: packaging/
      run: |
        set -eEuo pipefail

        python -Im pip install expandvars
        python -m pep517_backend.cli translate-cython
      shell: bash
    - name: Disable the Cython.Coverage Produce plugin
      if: >-  # Only works if the dists were built with line tracing
        matrix.no-extensions
        || (
          github.event_name == 'push'
          && contains(github.ref, 'refs/tags/')
        )
      run: |
        set -eEuo pipefail
        sed -i.bak 's/^plugins = .*//g' .coveragerc
      shell: bash
    - name: Run unittests
      env:
        FROZENLIST_NO_EXTENSIONS: ${{ matrix.no-extensions }}
      run: >-
        python -Im
        pytest
        -v
        --cov-report xml
        --junitxml=.test-results/pytest/test.xml
    - name: Produce markdown test summary from JUnit
      if: >-
        !cancelled()
      uses: test-summary/action@v2.4
      with:
        paths: .test-results/pytest/test.xml
    - name: Append coverage results to Job Summary
      if: >-
        !cancelled()
      run: >-
        python -Im coverage report --format=markdown
        >> "${GITHUB_STEP_SUMMARY}"
      shell: bash
    - name: Re-run the failing tests with maximum verbosity
      if: >-
        !cancelled()
        && failure()
      env:
        FROZENLIST_NO_EXTENSIONS: ${{ matrix.no-extensions }}
      run: >-  # `exit 1` makes sure that the job remains red with flaky runs
        python -Im
        pytest --no-cov -vvvvv --lf -rA
        && exit 1
      shell: bash
    - name: Send coverage data to Codecov
      if: >-
        !cancelled()
      uses: codecov/codecov-action@v4
      with:
        token: ${{ secrets.CODECOV_TOKEN }}
        files: ./coverage.xml
        flags: >-
          CI-GHA,
          pytest,
          OS-${{ runner.os }},
          VM-${{ matrix.os }},
          Py-${{ steps.python-install.outputs.python-version }}
        fail_ci_if_error: true

  test-summary:
    name: Test matrix status
    if: always()
    runs-on: ubuntu-latest
    timeout-minutes: 1
    needs: [lint, test]
    steps:
    - name: Decide whether the needed jobs succeeded or failed
      uses: re-actors/alls-green@release/v1
      with:
        jobs: ${{ toJSON(needs) }}

  pre-deploy:
    name: Pre-Deploy
    runs-on: ubuntu-latest
    timeout-minutes: 1
    needs: test-summary
    # Run only on pushing a tag
    if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
    steps:
    - name: Dummy
      run: |
        echo "Predeploy step"

  build-wheels-for-odd-archs:
    name: >-  # ${{ '' } is a hack to nest jobs under the same sidebar category
      📦 Build wheels for odd arches${{ '' }}
    needs:
    - build-pure-python-dists
    - pre-deploy
    - pre-setup  # transitive, for accessing settings
    strategy:
      matrix:
        qemu:
        - aarch64
        - ppc64le
        - s390x
    uses: ./.github/workflows/reusable-build-wheel.yml
    with:
      qemu: ${{ matrix.qemu }}
      source-tarball-name: >-
        ${{ needs.build-pure-python-dists.outputs.sdist-filename }}
      dists-artifact-name: ${{ needs.pre-setup.outputs.dists-artifact-name }}

  deploy:
    name: Deploy
    needs:
    - build-pure-python-dists
    - build-wheels-for-odd-archs
    - build-wheels-for-tested-arches
    - pre-setup  # transitive, for accessing settings
    runs-on: ubuntu-latest
    timeout-minutes: 14

    permissions:
      contents: write  # IMPORTANT: mandatory for making GitHub Releases
      id-token: write  # IMPORTANT: mandatory for trusted publishing & sigstore

    environment:
      name: pypi
      url: https://pypi.org/p/${{ env.PROJECT_NAME }}

    steps:
    - name: Retrieve the project source from an sdist inside the GHA artifact
      uses: re-actors/checkout-python-sdist@release/v2
      with:
        source-tarball-name: >-
          ${{ needs.build-pure-python-dists.outputs.sdist-filename }}
        workflow-artifact-name: >-
          ${{ needs.pre-setup.outputs.dists-artifact-name }}

    - name: Download distributions
      uses: actions/download-artifact@v4
      with:
        path: dist
        pattern: ${{ needs.pre-setup.outputs.dists-artifact-name }}*
        merge-multiple: true
    - run: |
        tree
    - name: Login
      run: |
        echo "${{ secrets.GITHUB_TOKEN }}" | gh auth login --with-token
    - name: Make Release
      uses: aio-libs/create-release@v1.6.6
      with:
        changes_file: CHANGES.rst
        version_file: ${{ env.PROJECT_NAME }}/__init__.py
        github_token: ${{ secrets.GITHUB_TOKEN }}
        head_line: >-
          {version}\n=+\n\n\*\({date}\)\*\n
        fix_issue_regex: >-
          :issue:`(\d+)`
        fix_issue_repl: >-
          #\1

    - name: >-
        Publish 🐍📦 to PyPI
      uses: pypa/gh-action-pypi-publish@release/v1

    - name: Sign the dists with Sigstore
      uses: sigstore/gh-action-sigstore-python@v3.0.0
      with:
        inputs: >-
          ./dist/${{ needs.build-pure-python-dists.outputs.sdist-filename }}
          ./dist/*.whl

    - name: Upload artifact signatures to GitHub Release
      # Confusingly, this action also supports updating releases, not
      # just creating them. This is what we want here, since we've manually
      # created the release above.
      uses: softprops/action-gh-release@v1
      with:
        # dist/ contains the built packages, which smoketest-artifacts/
        # contains the signatures and certificates.
        files: dist/**

...