fixed gtk theming to use gsettings

modules/system/gtk/gtk.nix

@@ -0,0 +1,50 @@
+{
+  self,
+  inputs,
+  ...
+}: {
+  flake.nixosModules.catppuccinGtk = {
+    pkgs,
+    lib,
+    ...
+  }: let
+    modules = [
+      inputs.catppuccin.nixosModules.catppuccin
+    ];
+  in {
+    environment.systemPackages = with pkgs; [
+      (catppuccin-gtk.override {
+        variant = "mocha";
+        accents = ["mauve"];
+        tweaks = ["rimless"];
+        size = "compact";
+      })
+      (catppuccin-papirus-folders.override {
+        flavor = "mocha";
+        accent = "mauve";
+      })
+    ];
+    imports = modules;
+    catppuccin = {
+      enable = true;
+      autoEnable = false;
+      accent = "mauve";
+      flavor = "mocha";
+      gtk = {
+        icon.enable = true;
+      };
+    };
+    programs.dconf.profiles.user.databases = [
+      {
+        lockAll = false;
+        settings = {
+          "org/gnome/desktop/interface" = {
+            gtk-theme = "catppuccin-mocha-mauve-compact+rimless";
+						icon-theme = "Papirus";
+						color-scheme = "prefer-dark";
+          };
+        };
+      }
+    ];
+  };
+}