Nix: simplify CI

.github/workflows/nix-build.yaml

@@ -5,13 +5,6 @@ jobs:
   nix:
     name: "Build Hyprland (Nix)"
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        package:
-        - default
-        - hyprland-no-hidpi
-        - hyprland-nvidia
-        - xdg-desktop-portal-hyprland
     steps:
     - name: Clone repository
       uses: actions/checkout@v3
@@ -29,5 +22,5 @@ jobs:
       with:
         name: hyprland
         authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
-    - name: Build Hyprland with default settings
-      run: nix build .#${{ matrix.package }} --print-build-logs
+    - name: Build packages
+      run: nix flake check --print-build-logs --accept-flake-config

flake.nix

@@ -101,6 +101,10 @@
       };
     };
 
+    checks = genSystems (system:
+      (lib.filterAttrs (n: _: (lib.hasPrefix "hyprland" n) && !(lib.hasSuffix "debug" n)) self.packages.${system})
+      // {inherit (self.packages.${system}) xdg-desktop-portal-hyprland;});
+
     packages = genSystems (system:
       (self.overlays.default null pkgsFor.${system})
       // {