Differentiate hardware and vms in roles

nixos/roles/default.nix

@@ -1,21 +1,16 @@
 {
   pkgs,
   lib,
+  modulesPath,
   vm ? true,
   ...
 }: {
-  imports =
-    [
+  imports = [
     ./admins.nix
     ./nix_keys.nix
     ./prometheusNodeExporter.nix
     ../modules/impermanence.nix
-    ]
-    ++ (
-      if vm
-      then [./vm.nix]
-      else [./hardware.nix]
-    );
+  ] ++ (if vm then [./vm.nix] else [./hardware.nix]);
   nix = {
     extraOptions = ''
       experimental-features = nix-command flakes