build-and-publish.yml

name: Build & Publish

on:
  pull_request:
    paths:
      - ".github/workflows/build-and-publish.yml"
      - "setup.*"

  workflow_dispatch:
    inputs:
      branch:
        description: "The branch, tag or SHA to release from"
        required: true
        default: "master"

jobs:
  os-built-distributions:
    name: Build on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.inputs.branch }}
          submodules: true

      - name: Set up QEMU
        if: runner.os == 'Linux'
        uses: docker/setup-qemu-action@v3
        with:
          platforms: all

      - name: Install Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"
      - name: Install build dependencies
        run: python -m pip install --upgrade cibuildwheel
      - name: Build wheels
        run: python -m cibuildwheel
        env:
          CIBW_ARCHS_MACOS: "x86_64 universal2 arm64"
          CIBW_ARCHS_LINUX: "auto aarch64"
      - uses: actions/upload-artifact@v4
        with:
          name: python-package-distributions-${{ matrix.os }}
          path: ./wheelhouse/*.whl

  source-distribution:
    name: Build source distribution
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.inputs.branch }}
          submodules: true
      - name: Install Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"
      - name: Build source distribution
        run: |
          # FIXME: setuptools was removed starting with Python 3.12
          pip install --upgrade --force setuptools
          python setup.py sdist
      - name: Store the source distribution
        uses: actions/upload-artifact@v4
        with:
          name: python-package-distributions-source
          path: dist
          retention-days: 4

  publish:
    needs:
      - os-built-distributions
      - source-distribution
    runs-on: ubuntu-latest
    steps:
      - name: Download all the dists
        uses: actions/download-artifact@v4
        with:
          pattern: python-package-distributions-*
          merge-multiple: true
          path: dist/
      - name: What will we publish?
        run: ls -l dist
      - name: Publish
        if: github.event.inputs.branch != ''
        uses: pypa/gh-action-pypi-publish@release/v1
        with:
          user: __token__
          password: ${{ secrets.PYPI_API_TOKEN }}
          skip_existing: true