Add qt5ct to system and greetd

modules/programs/greetd.nix

@@ -1,10 +1,9 @@
-{
-  config,
-  lib,
-  inputs,
-  pkgs,
-  options,
-  ...
+{ config
+, lib
+, inputs
+, pkgs
+, options
+, ...
 }:
 {
   options.mods = {
@@ -118,6 +117,7 @@
 
           env=XCURSOR_THEME,${config.mods.stylix.cursor.name}
           env=XCURSOR_SIZE,${toString config.mods.stylix.cursor.size}
+          env=QT_QPA_PLATFORMTHEME,qt5ct
 
           exec-once=regreet --style /home/${username}/.config/gtk-3.0/gtk.css; hyprctl dispatch exit
         '';