name: unmaintained-graph

# Renders the graph of packages without maintainers in all machines' closures
# (tools/unmaintained-graph) and publishes it on GitHub Pages:
# https://lassulus.github.io/superconfig/
on:
  push:
    branches: [master]
  workflow_dispatch:

permissions:
  contents: read
  pages: write
  id-token: write

# only the newest run needs to land
concurrency:
  group: pages
  cancel-in-progress: true

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: cachix/install-nix-action@v31

      # 4 parallel evaluations peak around 5.5 GB, well within the 16 GB runner
      - run: |
          mkdir -p _site
          nix run .#unmaintained-graph -- \
            --title "Unmaintained packages in superconfig @ ${GITHUB_SHA::8}" \
            -o _site/index.html

      - uses: actions/upload-pages-artifact@v3
        with:
          path: _site

  deploy:
    needs: build
    runs-on: ubuntu-latest
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - id: deployment
        uses: actions/deploy-pages@v4

      - run: echo "Graph at ${{ steps.deployment.outputs.page_url }}" >> "$GITHUB_STEP_SUMMARY"