name: "Build and populate cache"
on:
  pull_request:
  push:
    branches:
      - main
      - master
  schedule:
    # rebuild everyday at 2:51
    # TIP: Choose a random time here so not all repositories are build at once:
    # https://www.random.org/clock-times/?num=1&earliest=01%3A00&latest=08%3A00&interval=5&format=html&rnd=new
    - cron:  '55 3 * * *'
  workflow_dispatch:
jobs:
  tests:
    strategy:
      matrix:
        # Set this to cache your build results in cachix for faster builds
        # in CI and for everyone who uses your cache.
        #
        # Format: Your cachix cache host name without the ".cachix.org" suffix.
        # Example: mycache (for mycache.cachix.org)
        #
        # For this to work, you also need to set the CACHIX_SIGNING_KEY or
        # CACHIX_AUTH_TOKEN secret in your repository secrets settings in
        # Github found at
        # https://github.com/<your_githubname>/nur-packages/settings/secrets
        # cachixName:
        #   - sydpkgs
        nixPath:
          - nixpkgs=https://github.com/NixOS/nixpkgs/archive/refs/heads/nixpkgs-unstable.tar.gz
          # - nixpkgs=https://github.com/NixOS/nixpkgs/archive/refs/heads/nixos-unstable.tar.gz
          # - nixpkgs=https://github.com/NixOS/nixpkgs/archive/refs/heads/nixos-24.05.tar.gz
    runs-on: nixos
    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
    - name: Install nix
      uses: cachix/install-nix-action@v31
      with:
        nix_path: "${{ matrix.nixPath }}"
        extra_nix_config: |
          experimental-features = nix-command flakes
          access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
    - name: Show nixpkgs version
      run: nix-instantiate --eval -E '(import <nixpkgs> {}).lib.version'
    # - name: Setup cachix
    #   uses: cachix/cachix-action@v15
    #   # Don't replace <YOUR_CACHIX_NAME> here!
    #   if: ${{ matrix.cachixName != '<YOUR_CACHIX_NAME>' }}
    #   with:
    #     name: ${{ matrix.cachixName }}
    #     signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
    #     authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
    - name: Check evaluation
      run: |
        nix-env -f . -qa \* --meta --xml \
          --allowed-uris https://static.rust-lang.org \
          --option restrict-eval true \
          --option allow-import-from-derivation true \
          --drv-path --show-trace \
          -I nixpkgs=$(nix-instantiate --find-file nixpkgs) \
          -I $PWD
    - name: Build nix packages
      run: nix shell -f '<nixpkgs>' nix-build-uncached -c nix-build-uncached ci.nix -A cacheOutputs