---
name: Check

on:  # yamllint disable-line rule:truthy
  push:
    branches:
      - master
      - release-**
  pull_request:

permissions:
  contents: read

jobs:
  get-derivations:
    runs-on: ubuntu-24.04

    steps:
      - uses: DeterminateSystems/nix-installer-action@v16

      - id: get-derivations
        run: |
          nix flake show --json \
            github:${{
              github.repository
            }}/${{
              github.event.pull_request.head.sha || github.sha
            }} |
            jq --raw-output '
              def format_output($arch; $type):
                {
                  arch: $arch,
                  key: .,

                  os: (
                    if $arch == "x86_64-linux" then
                      "ubuntu-24.04"
                    else
                      "macos-14"
                    end
                  ),

                  type: $type
                };

              [
                ["x86_64-linux", "x86_64-darwin"][] as $arch |
                (.checks[$arch] | keys) as $checks |
                (.packages[$arch] | keys) as $packages |
                (($checks - $packages)[] | format_output($arch; "checks")),
                ($packages[] | format_output($arch; "packages"))
              ] |
              "derivations=\(.)"
            ' >>$GITHUB_OUTPUT

    outputs:
      derivations: ${{ steps.get-derivations.outputs.derivations }}

  check:
    runs-on: ${{ matrix.check.os }}

    name: ${{ matrix.check.key }} on ${{ matrix.check.arch }}
    needs: get-derivations

    strategy:
      fail-fast: false
      matrix:
        check: ${{ fromJSON(needs.get-derivations.outputs.derivations) }}

    steps:
      - uses: DeterminateSystems/nix-installer-action@v16

      - run: |
          nix build --no-update-lock-file --print-build-logs \
            github:${{
              github.repository
            }}/${{
              github.event.pull_request.head.sha || github.sha
            }}#${{
              matrix.check.type
            }}.${{
              matrix.check.arch
            }}.${{
              matrix.check.key
            }}