name: nix

on:
  pull_request:
    branches: [ "main" ]
  push:
    branches: [ "main" ]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
      - uses: cachix/install-nix-action@v31
        with:
          extra_nix_config: |
            access-tokens = github.com=${{ github.token }}
            trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= tee-pot:SS6HcrpG87S1M6HZGPsfo7d1xJccCGev7/tXc5+I4jg=
            substituters = https://cache.nixos.org/ https://attic.teepot.org/tee-pot
      - name: Setup Attic cache
        uses: ryanccn/attic-action@v0
        with:
          endpoint: https://attic.teepot.org/
          cache: tee-pot
          token: ${{ secrets.ATTIC_TOKEN }}
      - run: nix flake check -L --show-trace --keep-going

  fmt:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
      - uses: cachix/install-nix-action@v31
        with:
          extra_nix_config: |
            access-tokens = github.com=${{ github.token }}
            trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= tee-pot:SS6HcrpG87S1M6HZGPsfo7d1xJccCGev7/tXc5+I4jg=
            substituters = https://cache.nixos.org/ https://attic.teepot.org/tee-pot
      - name: Setup Attic cache
        uses: ryanccn/attic-action@v0
        with:
          endpoint: https://attic.teepot.org/
          cache: tee-pot
          token: ${{ secrets.ATTIC_TOKEN }}
      - run: nix fmt

  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
      - uses: cachix/install-nix-action@v31
        with:
          extra_nix_config: |
            access-tokens = github.com=${{ github.token }}
            trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= tee-pot:SS6HcrpG87S1M6HZGPsfo7d1xJccCGev7/tXc5+I4jg=
            substituters = https://cache.nixos.org/ https://attic.teepot.org/tee-pot
      - name: Setup Attic cache
        uses: ryanccn/attic-action@v0
        with:
          endpoint: https://attic.teepot.org/
          cache: tee-pot
          token: ${{ secrets.ATTIC_TOKEN }}
      - name: nix build
        run: nix run github:nixos/nixpkgs/nixos-23.11#nixci