Trying to install mocha instead of frappe

Droidnix/README.org

@@ -1118,20 +1118,18 @@ This file configures gtk
 { pkgs, ... }:
 
 {
+  # Install the GTK theme and icon theme
   environment.systemPackages = with pkgs; [
-    catppuccin.gtk.mocha.standard.blue
+    catppuccin-gtk-mocha # or inputs.catppuccin.packages.${pkgs.system}.catppuccin-gtk-mocha
     papirus-icon-theme
   ];
 
-  programs.gtk = {
-    enable = true;
-    gtk3.enable = true;
-    theme.name = "Catppuccin-Mocha-Standard-Blue-Dark";
-    theme.variant = "dark";
-    iconTheme.name = "Papirus-Dark";
+  # Set environment variables to enforce the theme
+  environment.sessionVariables = {
+    GTK_THEME = "Catppuccin-Mocha-Standard-Blue-Dark";
+    GTK_ICON_THEME = "Papirus-Dark";
+    GTK_ENABLE_DARK_MODE = "1";
   };
-
-  # Check session.nix for variables !
 }
 #+END_SRC