cibuildwheel.yml

name: Wheels

on:
  pull_request:
    branches:
      - master
  push:
    tags:
      - "v*"

jobs:
  build_bdist:
    name: "Build ${{ matrix.os }} (${{ matrix.arch }}) wheels"
    runs-on: ${{ matrix.os }}
    timeout-minutes: 60  # should be long enough even on tags, but let's prevent hangs
    strategy:
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-22.04
            arch: x86_64
          - os: ubuntu-22.04
            arch: aarch64
          - os: windows-2022
            arch: AMD64
          - os: macos-14
            arch: arm64
          - os: macos-13
            arch: x86_64

    steps:
    - uses: actions/checkout@v4
      with:
        fetch-depth: 0

    # For aarch64 support
    # https://cibuildwheel.pypa.io/en/stable/faq/#emulation
    - uses: docker/setup-qemu-action@v3
      with:
        platforms: all
      if: runner.os == 'Linux' && matrix.arch == 'aarch64'

    - name: Build just oldest and newest on PRs, all on tags
      shell: bash
      # - Always omit musl 3.8 b/c NumPy does not provide wheels for it
      # - Always omit musllinux_aarch64 because it's slow and niche
      # - On PPs, omit musllinux for speed
      # - On PRs, run just oldest and newest Python versions (and omit 3.8 aarch64)
      run: |
        if [[ "${{ github.event_name }}" == "pull_request" ]]; then
          CIBW_SKIP="pp* cp36-* cp37-* cp38-musllinux* cp39-* cp310-* cp311-* cp38-*-aarch64 *musllinux*"
        else
          CIBW_SKIP="pp* cp36-* cp37-* cp38-musllinux* *musllinux_aarch64"
        fi
        echo "CIBW_SKIP=$CIBW_SKIP" >> $GITHUB_ENV
        echo "Setting CIBW_SKIP=$CIBW_SKIP"

    - name: "Building ${{ matrix.os }} (${{ matrix.arch }}) wheels"
      uses: pypa/cibuildwheel@v2.18.1
      env:
        # Skips pypy py36,37
        CIBW_SKIP: ${{ env.CIBW_SKIP }}
        CIBW_ARCHS: ${{ matrix.arch }}
        CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
        CIBW_MANYLINUX_AARCH64_IMAGE: manylinux2014
        # Emulated testing is slow, so trust that the Python 3.12 test is good enough on aarch64
        # (takes about 5 minutes per wheel to build, and 5 minutes to test)
        CIBW_TEST_SKIP: "cp38-*_aarch64 cp39-*_aarch64 cp310-*_aarch64 cp311-*_aarch64"
        CIBW_TEST_REQUIRES: pytest
        CIBW_TEST_COMMAND: >
          python -c "import cftime; print(f'cftime v{cftime.__version__}')" &&
          python -m pip install check-manifest cython pytest pytest-cov &&
          python -m pytest -vv {package}/test

    - uses: actions/upload-artifact@v4
      with:
        name: pypi-artifacts-${{ matrix.os }}-${{ matrix.arch }}
        path: ${{ github.workspace }}/wheelhouse/*.whl


  build_sdist:
    name: Build source distribution
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Build sdist
        run: >
          pip install build
          && python -m build --sdist . --outdir dist

      - uses: actions/upload-artifact@v4
        with:
          path: dist/*.tar.gz

  show-artifacts:
    needs: [build_bdist, build_sdist]
    name: "Show artifacts"
    runs-on: ubuntu-22.04
    steps:
    - uses: actions/download-artifact@v4
      with:
        pattern: pypi-artifacts*
        path: ${{ github.workspace }}/dist
        merge-multiple: true

    - shell: bash
      run: |
        ls -l ${{ github.workspace }}/dist


  publish-artifacts-pypi:
    needs: [build_bdist, build_sdist]
    name: "Publish to PyPI"
    runs-on: ubuntu-22.04
    # upload to PyPI for every tag starting with 'v'
    if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags/v')
    steps:
    - uses: actions/download-artifact@v4
      with:
        pattern: pypi-artifacts*
        path: ${{ github.workspace }}/dist
        merge-multiple: true

    - uses: pypa/gh-action-pypi-publish@release/v1
      with:
        user: __token__
        password: ${{ secrets.PYPI_PASSWORD }}
        print_hash: true