CI/Nix: build with submodules

- Clone repo recursively
- Update Nix install action
- Remove wlroots update

.github/workflows/nix-build.yml

@@ -18,12 +18,13 @@ jobs:
         uses: actions/checkout@v3
         with:
           ref: ${{ github.ref }}
+          submodules: recursive
 
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
       - uses: DeterminateSystems/magic-nix-cache-action@main
       - uses: cachix/cachix-action@v12
         with:
           name: hyprland
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
 
-      - run: nix build .#${{ matrix.package }} --extra-substituters "https://hyprland.cachix.org" -L
+      - run: nix build '.?submodules=1#${{ matrix.package }}' -L --extra-substituters "https://hyprland.cachix.org"

.github/workflows/nix-ci.yml

@@ -3,13 +3,12 @@ name: Nix
 on: [push, pull_request, workflow_dispatch]
 
 jobs:
-  wlroots:
-    if: github.event_name != 'pull_request'
-    uses: ./.github/workflows/nix-update-wlroots.yml
+  update-inputs:
+    uses: ./.github/workflows/nix-update-inputs.yml
     secrets: inherit
 
   build:
     if: always() && !cancelled() && !contains(needs.*.result, 'failure')
-    needs: wlroots
+    needs: update-inputs
     uses: ./.github/workflows/nix-build.yml
     secrets: inherit

.github/workflows/nix-update-inputs.yml

@@ -1,8 +1,10 @@
 name: Nix
 
 on:
-  schedule:
-    - cron: '0 0 * * *' # check daily
+  workflow_call:
+    secrets:
+      PAT:
+        required: true
 
 jobs:
   update:
@@ -22,8 +24,3 @@ jobs:
         uses: stefanzweifel/git-auto-commit-action@v4
         with:
           commit_message: "[gha] Nix: update inputs"
-
-  update-build:
-    needs: update
-    uses: ./.github/workflows/nix-build.yml
-    secrets: inherit