CI: use org-wide actions

.github/workflows/nix-build.yml

@@ -3,41 +3,9 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Install Nix
-        uses: nixbuild/nix-quick-install-action@v31
+    uses: hyprwm/actions/.github/workflows/nix.yml@main
+    secrets: inherit
     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-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
-          # if there's no cache hit, restore a cache by this prefix
-          restore-prefixes-first-match: nix-${{ runner.os }}-
-          # collect garbage until the Nix store size (in bytes) is at most this number
-          # before trying to save a new cache
-          # 1G = 1073741824
-          gc-max-store-size-linux: 1G
-          # do purge caches
-          purge: true
-          # purge all versions of the cache
-          purge-prefixes: nix-${{ 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
-
-      - name: Update inputs
-        run: nix flake update
-
-      - run: nix flake check -L --keep-going
+      command: |
+        nix flake update
+        nix flake check -L --keep-going