.github/workflows/release.yml

# Cut a release whenever a new tag is pushed to the repo.
name: Release

on:
  push:
    tags:
      - "*.*.*"

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - name: Prepare workspace snippet
        run: .github/workflows/workspace_snippet.sh > release_notes.txt
      - name: Build wheel dist
        run: bazel build --stamp --embed_label=${{ env.GITHUB_REF_NAME }} //python/runfiles:wheel
      - name: Publish runfiles package to PyPI
        uses: pypa/gh-action-pypi-publish@release/v1
        with:
          # Note, the PYPI_API_TOKEN was added on
          # https://github.com/bazelbuild/rules_python/settings/secrets/actions 
          # and currently uses a token which authenticates as https://pypi.org/user/alexeagle/
          password: ${{ secrets.PYPI_API_TOKEN }}
          packages_dir: bazel-bin/python/runfiles
      - name: Release
        uses: softprops/action-gh-release@v1
        with:
          # Use GH feature to populate the changelog automatically
          generate_release_notes: true
          body_path: release_notes.txt