book.yml

name: Deploy Rustemo book to Pages

on:
  push:
    branches: ["main"]
    paths:
      - 'docs/**'
      - '.github/workflows/book.yml'

  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

# Allow one concurrent deployment
concurrency:
  group: "pages"
  cancel-in-progress: true



jobs:
  # Single deploy job since we're just deploying
  deploy-book:
    runs-on: ubuntu-latest

    # Grant GITHUB_TOKEN the permissions required to make a Pages deployment
    permissions:
      pages: write      # to deploy to Pages
      id-token: write   # to verify the deployment originates from an appropriate source

    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: true

      - uses: cachix/install-nix-action@v27
        with:
          nix_path: nixpkgs=channel:nixos-unstable
      - uses:  DeterminateSystems/magic-nix-cache-action@v6

      - name: Build book
        shell: bash
        run: |
          cd docs
          nix build -o book

      - name: Setup Pages
        uses: actions/configure-pages@v5
      - name: Upload artifact
        uses: actions/upload-pages-artifact@v3
        with:
          path: 'docs/book/html'
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4