devops: publish to PyPI from GitHub Actions with trusted publishing

.github/workflows/publish.yml

@@ -0,0 +1,77 @@
+name: Publish
+
+# Builds pytest-playwright and pytest-playwright-asyncio from a release tag and
+# uploads them to PyPI. Uses PyPI trusted publishing: PyPI trusts this workflow
+# file in the "pypi" environment, so no PyPI token is stored. Runs when a release
+# is published. To publish an existing tag, run it by hand with the tag name.
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "Release tag to publish, for example v0.10.0"
+        required: true
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build packages
+    runs-on: ubuntu-latest
+    env:
+      TAG: ${{ inputs.tag || github.event.release.tag_name }}
+    steps:
+    - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      with:
+        ref: refs/tags/${{ env.TAG }}
+        # setuptools-scm reads the version from the tag.
+        fetch-depth: 0
+    - name: Check the tag
+      run: |
+        if [[ ! "$TAG" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+          echo "Can only publish a release tag (vX.Y.Z), got: $TAG"
+          exit 1
+        fi
+    - name: Set up Python
+      uses: actions/setup-python@6d4fd22b20465ccc0f7354476588e8df7c9ca0e0 # v7.1.0
+      with:
+        python-version: "3.10"
+    - name: Install dependencies
+      run: python -m pip install "$(grep '^build==' local-requirements.txt)"
+    - name: Build the wheels and the sdists
+      run: |
+        python -m build --outdir dist pytest-playwright
+        python -m build --outdir dist pytest-playwright-asyncio
+    - name: Check the wheels and the sdists
+      run: |
+        ls -l dist
+        version="${TAG#v}"
+        for name in pytest_playwright pytest_playwright_asyncio; do
+          test -f "dist/$name-$version-py3-none-any.whl"
+          test -f "dist/$name-$version.tar.gz"
+        done
+        test "$(ls dist | wc -l)" -eq 4
+    - uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
+      with:
+        name: packages
+        path: dist/
+        if-no-files-found: error
+
+  publish:
+    name: Upload to PyPI
+    needs: build
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/project/pytest-playwright/
+    permissions:
+      # Lets the job get the GitHub OIDC token that PyPI trusted publishing needs.
+      id-token: write
+    steps:
+    - uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
+      with:
+        name: packages
+        path: dist/
+    - uses: pypa/gh-action-pypi-publish@7245906fb61fa33a13554f9d5fb856fe61758086 # v1.14.3