zsh, kitty, fastfetch config

flakes/plasma-desktop.nix

@@ -8,10 +8,13 @@
     enableQt5Integration = true;
   };
 
-  environment.plasma6.excludePackages = with pkgs; [
-    # kdepackages.<package>
+  environment.plasma6.excludePackages = with pkgs.kdePackages; [
+    konsole
+    qrca
   ];
 
+  services.displayManager.defaultSession = "plasma";
+
   services.displayManager.sddm = {
     enable = true;
     theme = "breeze";