Actually install plasma on my laptop...

hosts/_base/default.nix

@@ -60,7 +60,7 @@
       fira-code
       fira-code-symbols
 
-      (nerdfonts.override { fonts = [ "NerdFontsSymbolsOnly" ]; })
+      nerd-fonts.symbols-only
     ];
 
     fontconfig = {

hosts/kalle-laptop/default.nix

@@ -10,6 +10,7 @@
     ./hardware-configuration.nix
 
     ../../modules/sddm.nix
+    ../../modules/plasma.nix
 
     ../../modules/bash.nix
     ../../modules/kitty.nix
@@ -40,7 +41,6 @@
     home.packages = with pkgs; [
       discord
       vesktop
-      firefox
       chromium
       httpie
       kate

modules/plasma.nix

@@ -2,5 +2,5 @@
   ...
 }:
 {
-  services.xserver.desktopManager.plasma6.enable = true;
+  services.desktopManager.plasma6.enable = true;
 }