update workflow

.gitea/workflows/flake-check.yml

@@ -2,13 +2,16 @@ name: "Build"
 on:
   push:
 jobs:
-  build:
+  test:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
     - name: Install dependencies for Nix setup action
+      with:
+        enable_kvm: true
+        extra_nix_config: "system-features = nixos-test benchmark big-parallel kvm"
       run: |
         apt update -y
         apt install sudo -y                
     - uses: cachix/install-nix-action@v31
-    - run: nix build .#
+    - run: nix flake check