nix-check.yml

name: Nix Flake Check

on:
  pull_request:
  push:
    branches:
      - master
      - 'release-*'
      - 'dev-*'
permissions:
  contents: read

jobs:
  flake-check:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Nix
        uses: DeterminateSystems/nix-installer-action@v9

      - name: Enable flakes
        uses: DeterminateSystems/magic-nix-cache-action@v2

      - name: Check Nix flake inputs
        run: nix flake check

      - name: Show flake metadata
        if: always() # Run even if previous step fails
        run: nix flake metadata

      - name: Validate flake outputs
        if: always() # Run even if previous step fails
        run: nix flake show

      - name: Check build in Nix dev shell
        run: |
          # Enter nix develop and run build commands
          nix develop --command bash -c '
            # Install dependencies
            yarn install
            
            # Build the project
            yarn build
            
            # Build cosmic-swingset
            cd packages/cosmic-swingset && make
          '