release.yml

---
name: Build and upload to PyPI

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

# Only build on published releases
on:
  release:
    types:
      - published
  # Also allow running this action on PRs if requested by applying the
  # "Run cibuildwheel" label.
  pull_request:
    types:
      - opened
      - synchronize
      - reopened
      - labeled

permissions:
  contents: read

jobs:
  build_sdist:
    if: >-
      github.event_name == 'release' ||
      (github.event_name == 'pull_request' && (
        (
          github.event.action == 'labeled' &&
          github.event.label.name == 'CI: build wheels'
        ) ||
        contains(github.event.pull_request.labels.*.name,
                'CI: build wheels')
        )
      )
    name: Build source distribution
    runs-on: ubuntu-latest
    outputs:
      SDIST_NAME: ${{ steps.sdist.outputs.SDIST_NAME }}

    steps:
      - uses: actions/checkout@v4
        with:
          # We need the full history to generate the proper version number
          fetch-depth: 0

      - uses: actions/setup-python@v5
        name: Install Python
        with:
          python-version: '3.11'

      - name: Install dependencies
        run: python -m pip install build twine

      - name: Build sdist
        id: sdist
        run: |
          python -m build --sdist
          # Get the name of the build sdist file for later use
          echo "SDIST_NAME=$(ls -1 dist)" >> $GITHUB_OUTPUT

      - name: Check README rendering for PyPI
        run: twine check dist/*

      - name: Upload sdist result
        uses: actions/upload-artifact@v4
        with:
          name: cibw-sdist
          path: dist/*.tar.gz
          if-no-files-found: error

  build_wheels:
    needs: build_sdist
    name: Build wheels on ${{ matrix.os }} for ${{ matrix.cibw_archs }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        include:
          - os: ubuntu-latest
            cibw_archs: "x86_64"
          - os: windows-2019
            cibw_archs: "auto64"
          - os: macos-latest
            cibw_archs: "x86_64"
          - os: macos-latest
            cibw_archs: "arm64"
    defaults:
      run:
        shell: bash

    steps:
      - name: Download sdist
        uses: actions/download-artifact@v4
        with:
          name: cibw-sdist
          path: dist

      - name: Build wheels for CPython
        uses: pypa/cibuildwheel@7940a4c0e76eb2030e473a5f864f291f63ee879b # v2.21.3
        with:
          package-dir: dist/${{ needs.build_sdist.outputs.SDIST_NAME }}
        env:
          CIBW_BUILD: "cp310-* cp311-* cp312-* cp313-*"
          # Skip 32 bit builds and musllinux due to lack of numpy wheels
          CIBW_SKIP: "*-win32 *_i686 *-musllinux*"
          CIBW_ARCHS: ${{ matrix.cibw_archs }}

      - uses: actions/upload-artifact@v4
        with:
          name: cibw-wheels-${{ matrix.os }}-${{ matrix.cibw_archs }}
          path: ./wheelhouse/*.whl
          if-no-files-found: error

  publish:
    name: Publish to PyPI
    # Only publish on releases
    if: github.event_name == 'release'
    needs: [build_wheels, build_sdist]
    environment:
      name: PyPI
      url: https://pypi.org/project/cartopy
    permissions:
      id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
    runs-on: ubuntu-latest

    steps:
      - name: Download wheels
        uses: actions/download-artifact@v4
        with:
          pattern: cibw-*
          path: dist
          merge-multiple: true

      - name: Publish Package
        uses: pypa/gh-action-pypi-publish@v1.12.1