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| name: Next-Gen CI Prototype | |
| on: | |
| pull_request: | |
| branches: [ main ] | |
| # 1. CONCURRENCY: Stop burning money on abandoned commits | |
| concurrency: | |
| group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }} | |
| cancel-in-progress: true | |
| jobs: | |
| # 2. DISCOVERY: Find exactly what changed and output JSON | |
| discover: | |
| runs-on: ubuntu-latest | |
| outputs: | |
| packages: ${{ steps.set-matrix.outputs.packages }} | |
| steps: | |
| - uses: actions/checkout@v4 | |
| with: | |
| fetch-depth: 0 # Needed to diff against main | |
| - name: Calculate Changed Packages | |
| id: set-matrix | |
| run: | | |
| # Find all modified directories inside packages/ | |
| CHANGED=$(git diff --name-only origin/main...HEAD | grep "^packages/" | cut -d/ -f2 | sort -u || true) | |
| if [ -z "$CHANGED" ]; then | |
| echo "packages=[]" >> $GITHUB_OUTPUT | |
| exit 0 | |
| fi | |
| # Convert bash list to JSON array using jq | |
| JSON_ARRAY=$(jq -R -s -c 'split("\n")[:-1]' <<< "$CHANGED") | |
| echo "Discovered packages: $JSON_ARRAY" | |
| echo "packages=$JSON_ARRAY" >> $GITHUB_OUTPUT | |
| # 3. EXECUTION: Native Fan-out Matrix | |
| unit-test: | |
| needs: discover | |
| if: ${{ needs.discover.outputs.packages != '[]' }} | |
| runs-on: ubuntu-latest | |
| strategy: | |
| fail-fast: false # Don't kill the whole matrix if one package fails | |
| matrix: | |
| package: ${{ fromJSON(needs.discover.outputs.packages) }} | |
| # Risk-Tiering: Smoke test on presubmit to save money | |
| python: ["3.11"] | |
| steps: | |
| - uses: actions/checkout@v4 | |
| # 4. THE ENGINE SWAP: Rust-based uv instead of setup-python + pip | |
| - name: Install uv and Python | |
| uses: astral-sh/setup-uv@v5 | |
| with: | |
| python-version: ${{ matrix.python }} | |
| enable-cache: true | |
| cache-dependency-glob: "packages/${{ matrix.package }}/setup.py" | |
| - name: Execute Tests (High-Density) | |
| run: | | |
| cd packages/${{ matrix.package }} | |
| # Force Nox to natively use uv instead of the legacy virtualenv module | |
| export NOX_DEFAULT_VENV_BACKEND=uv | |
| echo "Running targeted tests for ${{ matrix.package }} on Python ${{ matrix.python }}" | |
| # Use uvx to run nox (with the uv plugin injected to guarantee compatibility) | |
| uvx --with 'nox[uv]' nox -s unit-${{ matrix.python }} |