try to use awesomewm

nix/gui1.nix

@@ -2,14 +2,31 @@
 
 {
   # GUI / UX
-  services.xserver.enable = true;
   services.xserver.excludePackages = [
     pkgs.xterm
   ];
-  services.displayManager.sddm.enable = true;
   services.desktopManager.plasma6.enable = true;
-  services.xserver.xkb = {
+  services={
-    layout = "us";
+
-    variant = "";
+    xserver = {
+      enable = true;
+      windowManager.awesome = {
+        enable = true;
+        luaModules = with pkgs.luaPackages; [
+            luarocks # is the package manager for Lua modules
+            luadbi-mysql # Database abstraction layer
+            awesome-wm-widgets # Community collection of widgets
+        ];
+      };
+      xkb = {
+        layout = "us";
+        variant = "";
+      };
+    };
+
+    displayManager = {
+      sddm.enable = true;
+      defaultSession = "none+awesome";
+    };
   };
 }