CI/Nix: separate xdph from hl

.github/workflows/nix-build.yml

@@ -1,56 +0,0 @@
-name: Nix (Build)
-
-on:
-  workflow_call:
-    secrets:
-      CACHIX_AUTH_TOKEN:
-        required: false
-
-jobs:
-  build:
-    strategy:
-      matrix:
-        package:
-          - hyprland
-          # - hyprland-cross # cross compiling fails due to qt
-          # failure chain: hyprland-qtutils -> qt6.qtsvg -> qt6.qtbase -> psqlodbc & qt6.qttranslations
-          - xdg-desktop-portal-hyprland
-
-    runs-on: ubuntu-latest
-    steps:
-      - name: Install Nix
-        uses: nixbuild/nix-quick-install-action@v31
-        with:
-          nix_conf: |
-            keep-env-derivations = true
-            keep-outputs = true
-
-      - name: Restore and save Nix store
-        uses: nix-community/cache-nix-action@v6
-        with:
-          # restore and save a cache using this key
-          primary-key: nix-${{ runner.os }}
-          # if there's no cache hit, restore a cache by this prefix
-          restore-prefixes-first-match: nix-${{ runner.os }}
-          # collect garbage until the Nix store size (in bytes) is at most this number
-          # before trying to save a new cache
-          # 1G = 1073741824
-          gc-max-store-size-linux: 5G
-          # do purge caches
-          purge: true
-          # purge all versions of the cache
-          purge-prefixes: nix-${{ runner.os }}
-          # created more than this number of seconds ago
-          purge-created: 0
-          # or, last accessed more than this number of seconds ago
-          # relative to the start of the `Post Restore and save Nix store` phase
-          purge-last-accessed: 0
-          # except any version with the key that is the same as the `primary-key`
-          purge-primary-key: never
-
-      - uses: cachix/cachix-action@v15
-        with:
-          name: hyprland
-          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
-
-      - run: nix build 'github:hyprwm/Hyprland?ref=${{ github.ref }}#${{ matrix.package }}' -L --extra-substituters "https://hyprland.cachix.org"

.github/workflows/nix-ci.yml

@@ -1,4 +1,4 @@
-name: Nix (CI)
+name: Nix
 
 on: [push, pull_request, workflow_dispatch]
 
@@ -8,13 +8,23 @@ jobs:
     uses: ./.github/workflows/nix-update-inputs.yml
     secrets: inherit
 
-  build:
+  hyprland:
     if: (github.event_name != 'pull_request' || github.event.pull_request.head.repo.fork)
-    uses: ./.github/workflows/nix-build.yml
+    uses: ./.github/workflows/nix.yml
     secrets: inherit
+    with:
+      command: nix build 'github:hyprwm/Hyprland?ref=${{ github.ref }}' -L --extra-substituters "https://hyprland.cachix.org"
+
+  xdph:
+    if: (github.event_name != 'pull_request' || github.event.pull_request.head.repo.fork)
+    needs: hyprland
+    uses: ./.github/workflows/nix.yml
+    secrets: inherit
+    with:
+      command: nix build 'github:hyprwm/Hyprland?ref=${{ github.ref }}#xdg-desktop-portal-hyprland' -L --extra-substituters "https://hyprland.cachix.org"
 
   test:
     if: (github.event_name != 'pull_request' || github.event.pull_request.head.repo.fork)
-    needs: build
+    needs: hyprland
     uses: ./.github/workflows/nix-test.yml
     secrets: inherit

.github/workflows/nix.yml

@@ -0,0 +1,25 @@
+name: Build
+
+on:
+  workflow_call:
+    inputs:
+      command:
+        required: true
+        type: string
+        description: Command to run
+    secrets:
+      CACHIX_AUTH_TOKEN:
+        required: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: DeterminateSystems/nix-installer-action@main
+
+      - uses: cachix/cachix-action@v15
+        with:
+          name: hyprland
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
+
+      - run: ${{ inputs.command }}