[roles] No config change unless enabled

roles/kodi/default.nix

@@ -25,7 +25,7 @@ in
       steam-library
       youtube
     ]);
-  in {
+  in mkIf cfg.enable {
     users.extraUsers.kodi.isNormalUser = true;
 
     networking.firewall = {
@@ -50,7 +50,7 @@ in
           enable = true;
           greeter.enable = false;
         };
-	displayManager.sddm.enable = mkForce false;
+        displayManager.sddm.enable = mkForce false;
       };
       displayManager = mkIf (!cfg.wayland) {
         autoLogin.enable = true;