donutbrowser/.github/workflows/flake-test.yml

name: Flake Test

on:
  pull_request:
    paths:
      - "flake.nix"
      - "flake.lock"
      - ".github/workflows/flake-test.yml"
  push:
    branches:
      - main
    paths:
      - "flake.nix"
      - "flake.lock"
      - ".github/workflows/flake-test.yml"
  workflow_dispatch:

permissions:
  contents: read

concurrency:
  group: flake-test-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

jobs:
  flake:
    name: validate-flake
    runs-on: ubuntu-22.04
    timeout-minutes: 90

    steps:
      - name: Checkout repository
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 #v7.0.1
        with:
          persist-credentials: false

      - name: Install Nix
        uses: cachix/install-nix-action@448cde739abec1eaf0646249e3d25bb8d9bc7702 # v31.11.2
        with:
          extra_nix_config: |
            experimental-features = nix-command flakes

      - name: Evaluate flake outputs
        run: nix flake show --all-systems

      - name: Check setup app is exposed
        run: nix eval .#apps.x86_64-linux.setup.program --raw

      - name: Run flake setup app
        env:
          CI: "true"
        run: nix run .#setup

      - name: Run flake info app
        run: nix run .#info

      # `nix flake show` above only evaluates the flake. This step actually
      # compiles the app inside the Nix environment, which is what catches a
      # missing build-time dependency — in particular libayatana-appindicator
      # (required by libappindicator-sys for the Linux system tray). The build
      # fails here if that dependency is dropped from the flake.
      - name: Build the app via the flake
        run: nix run .#build