Differentiate hardware and vms in roles

nixos/roles/default.nix

@@ -1,21 +1,16 @@
 {
   pkgs,
   lib,
+  modulesPath,
   vm ? true,
   ...
 }: {
-  imports =
+  imports = [
-    [
+    ./admins.nix
-      ./admins.nix
+    ./nix_keys.nix
-      ./nix_keys.nix
+    ./prometheusNodeExporter.nix
-      ./prometheusNodeExporter.nix
+    ../modules/impermanence.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