cibuildwheel.yml

name: Wheels

on:
  pull_request:
  push:
    tags:
      - "v*"
  release:
    types:
      - published

permissions:
  contents: read

jobs:

  build_sdist:
    name: Build source distribution
    runs-on: ubuntu-22.04
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - uses: actions/setup-python@v5
        name: Install Python
        with:
          python-version: 3.x

      - name: Install APT packages
        if: contains(${{ matrix.os }}, 'ubuntu')
        run: |
          sudo apt update
          sudo apt install libhdf5-dev libnetcdf-dev

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

      - uses: actions/upload-artifact@v4
        with:
          name: pypi-artifacts
          path: ${{ github.workspace }}/dist/*.tar.gz


  build_bdist:
    name: "Build ${{ matrix.os }} (${{ matrix.arch }}) wheels"
    runs-on: ${{ matrix.os }}
    # Prevent hanging when building from emulation like aarch64.
    timeout-minutes: 300
    strategy:
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-22.04
            arch: x86_64
          - os: ubuntu-22.04
            arch: aarch64
          - os: macos-14
            arch: arm64
            CIBW_ENVIRONMENT: MACOSX_DEPLOYMENT_TARGET=14.0
          - os: macos-12
            arch: x86_64
            CIBW_ENVIRONMENT: MACOSX_DEPLOYMENT_TARGET=12.0

    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 oldest and newest Python
      shell: bash
      # On PRs we run only oldest and newest Python versions to reduce CI load.
      # Skips pypy and musllinux everywhere.
      # We are buiding 38 and 312 for now.
      # These needs to rotate every new Python release.
      run: |
        if [[ "${{ github.event_name }}" == "pull_request" ]]; then
          CIBW_SKIP="pp* cp36-* cp37-* *-musllinux* cp39-* cp310-* cp311-*"
        else
          CIBW_SKIP="pp* cp36-* cp37-* *-musllinux*"
        fi
        echo "CIBW_SKIP=$CIBW_SKIP" >> $GITHUB_ENV
        echo "Setting CIBW_SKIP=$CIBW_SKIP"

    - name: "Building ${{ matrix.os }} (${{ matrix.arch }}) wheels"
      uses: pypa/cibuildwheel@v2.21.0
      env:
        CIBW_SKIP: ${{ env.CIBW_SKIP }}
        CIBW_ARCHS: ${{ matrix.arch }}
        CIBW_BUILD_FRONTEND: build
        CIBW_MANYLINUX_X86_64_IMAGE: ghcr.io/ocefpaf/manylinux2014_x86_64-netcdf
        CIBW_MANYLINUX_AARCH64_IMAGE: ghcr.io/ocefpaf/manylinux2014_aarch64-netcdf
        # Emulation testing is slow, testing only latest Python.
        CIBW_TEST_SKIP: "cp38-*_aarch64 cp39-*_aarch64 cp310-*_aarch64 cp311-*_aarch64"
        CIBW_ENVIRONMENT: ${{ matrix.CIBW_ENVIRONMENT }}
        CIBW_BEFORE_BUILD_MACOS: brew install hdf5 netcdf
        CIBW_TEST_REQUIRES: pytest cython packaging
        CIBW_TEST_COMMAND: >
          python -c "import netCDF4; print(f'netCDF4 v{netCDF4.__version__}')"
          && pytest -s -rxs -v {project}/test
          && URL="https://icdc.cen.uni-hamburg.de/thredds/dodsC/ftpthredds/hamtide/m2.hamtide11a.nc"
          && python -c "from netCDF4 import Dataset; nc=Dataset(\"${URL}\"); print(nc)"

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


  build_wheels_windows:
    name: Build wheels for ${{matrix.arch}} on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [windows-latest]
        arch: [win_amd64]

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

      - uses: actions/setup-python@v5
        name: Install Python
        with:
          python-version: 3.x

      - name: Setup Micromamba Python ${{ matrix.python-version }}
        uses: mamba-org/setup-micromamba@v1
        with:
          environment-name: build
          init-shell: bash
          create-args: >-
            python=${{ matrix.python-version }} libnetcdf=4.9.2 --channel conda-forge

      - name: Install cibuildwheel
        run: |
          python -m pip install --upgrade cibuildwheel delvewheel

      - name: Build wheels for Windows (${{ matrix.arch }})
        run: cibuildwheel --output-dir wheelhouse
        env:
          CIBW_BUILD: "cp39-${{ matrix.arch }} cp310-${{ matrix.arch }} cp311-${{ matrix.arch }} cp312-${{ matrix.arch }}"
          CIBW_ENVIRONMENT_WINDOWS: >
            HDF5_DIR="C:\\Users\\runneradmin\\micromamba\\envs\\build\\Library"
            netCDF4_DIR="C:\\Users\\runneradmin\\micromamba\\envs\\build\\Library"
            PATH="C:\\Users\\runneradmin\\micromamba\\envs\\build\\Library\\bin;${PATH}"
          CIBW_REPAIR_WHEEL_COMMAND_WINDOWS: >
            delvewheel show {wheel}
            && delvewheel repair -w {dest_dir} {wheel}
          CIBW_TEST_REQUIRES: pytest cython packaging
          CIBW_TEST_COMMAND: >
            python -c "import netCDF4; print(f'netCDF4 v{netCDF4.__version__}')"
            && pytest -s -rxs -v {project}\\test

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


  show-artifacts:
    needs: [build_bdist, build_sdist, build_wheels_windows]
    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 -lh ${{ github.workspace }}/dist


  publish-artifacts-pypi:
    needs: [build_bdist, build_sdist, build_wheels_windows]
    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