python-pillow/Pillow GitHub Actions scorecard

# Workflow runs on both push and pull_request (applies to: Test Docker, Test, Test Windows, Benchmark, CIFuzz, Lint, Test MinGW, Docs)
on:
  push:
    branches: [main]
  pull_request:

# Missing dependency cache (pip) (applies to: Wheels)
- uses: actions/setup-python@v5
  with:
    python-version: '3.12'
    cache: 'pip'

# No job timeout (applies to: Benchmark, CIFuzz, Docs, Lint, Release drafter, Close stale issues, Test Docker, Test Valgrind Memory Leaks, Test Valgrind, Test, Wheels)
jobs:
  build:
    runs-on: ubuntu-latest
    timeout-minutes: 15

# Cache without restore-keys (applies to: Benchmark, Docs, Test)
    key: deps-${{ runner.os }}-${{ hashFiles('**/<lockfile>') }}
    restore-keys: |
      deps-${{ runner.os }}-

# Artifacts at default retention (applies to: CIFuzz, Test Windows, Test, Wheels)
- uses: actions/upload-artifact@v4
  with:
    name: build
    path: dist/
    retention-days: 7

# No path filters on triggers (applies to: Lint)
on:
  pull_request:
    paths:
      - 'src/**'
      - 'package.json'

# cancel-in-progress on a deploy workflow (applies to: Release drafter)
concurrency:
  group: ${{ github.workflow }}
  # queued deploys run in order; none are dropped

# Large build matrix (applies to: Test Docker, Test)
strategy:
  fail-fast: true
  matrix:
    include:
      - { os: ubuntu-latest, node: 20 }
      - { os: ubuntu-latest, node: 22 }

# Premium runners (macOS / Windows) (applies to: Test MinGW, Test Windows, Test, Wheels)
jobs:
  build:
    runs-on: ubuntu-latest  # ~10x cheaper than macos-latest

Each snippet is representative. Merge into the named workflow files rather than pasting wholesale.