Trying with emacs

Droidnix/generated/system/applications/file_management/thunar.nix

@@ -1,17 +1,34 @@
 { config, pkgs, lib, ... }:
 
+let
+  username = "henrov"; # <-- vervang dit door je echte gebruikersnaam
+in
 {
-  home-manager.users.${config.home.username} = {
+  home-manager.users.${username} = {
     # Symlink Papirus icon theme
     xdg.configFile."local/share/icons/Papirus".source = "/assets/system/theming/icons/papirus";
-    xdg.configFile."local/share/icons/Papirus-Dark".source = "/assets/system/theming/icons/papirus-dark";  # If you have the dark variant
+    xdg.configFile."local/share/icons/Papirus-Dark".source = "/assets/system/theming/icons/papirus-dark";
 
-    # Set Papirus as the default icon theme
+    # GTK icon theme: Papirus + Catppuccin Mocha
     gtk.enable = true;
     gtk.gtk3.iconTheme.name = "Papirus";
     gtk.gtk4.iconTheme.name = "Papirus";
 
-    # Thunar and its plugins (as before)
+    # Optional: force Catppuccin Mocha GTK dark theme via settings.ini
+    xdg.configFile."gtk-3.0/settings.ini".text = ''
+      [Settings]
+      gtk-theme-name=Catppuccin-Mocha-Standard-Blue-Dark
+      gtk-icon-theme-name=Papirus
+      gtk-application-prefer-dark-theme=1
+    '';
+    xdg.configFile."gtk-4.0/settings.ini".text = ''
+      [Settings]
+      gtk-theme-name=Catppuccin-Mocha-Standard-Blue-Dark
+      gtk-icon-theme-name=Papirus
+      gtk-application-prefer-dark-theme=1
+    '';
+
+    # Thunar and its plugins
     home.packages = with pkgs; [
       thunar
       thunar-volman
@@ -29,6 +46,7 @@
       xdg-utils
     ];
 
+    # Set Thunar as default file manager
     xdg.mimeApps = {
       defaultApplications = {
         "inode/directory" = "Thunar.desktop";