add kvm support via jobset

cd5c0f1 'try fix actions kvm error'

.gitea/workflows/checks.yaml

@@ -12,4 +12,9 @@ jobs:
         apt update -y
         apt install sudo -y
     - uses: cachix/install-nix-action@v27
+    - name: enable kvm support
+      run: |
+        echo "system-features = nixos-test benchmark big-parallel kvm" >> /etc/nix/nix.conf
+        echo "Added features to nix conf"
+        cat /etc/nix/nix.conf
     - run: nix flake check

test/test.nix

@@ -8,10 +8,6 @@
 
       services.malobeo-tasklist.enable = true;
       environment.systemPackages = [ pkgs.curl ];
-
-      nix.settings = {
-        system-features = [ "nixos-test" "benchmark" "big-parallel" "kvm" ];
-      };
     };
   };