fix

modules/applications/gtk/default.nix

@@ -0,0 +1,25 @@
+{
+  lib,
+  config,
+  ...
+}:
+let
+  cfg = config.my.applications.gtk;
+in
+{
+  imports = [
+    ./system.nix
+    ./home.nix
+  ];
+
+  options.my.applications.gtk = {
+    enable = lib.mkEnableOption "GTK theme configuration";
+    system.enable = lib.mkEnableOption "GTK system configuration";
+    homeManager.enable = lib.mkEnableOption "GTK home-manager configuration";
+  };
+
+  config = lib.mkIf cfg.enable {
+    my.applications.gtk.system.enable = lib.mkDefault true;
+    my.applications.gtk.homeManager.enable = lib.mkDefault true;
+  };
+}

modules/applications/gtk/home.nix

@@ -0,0 +1,36 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+let
+  cfg = config.my.applications.gtk.homeManager;
+in
+{
+  options.my.applications.gtk.homeManager = {
+    enable = lib.mkEnableOption "GTK home-manager configuration";
+  };
+
+  config.home-manager.sharedModules = [
+    {
+      config = lib.mkIf cfg.enable {
+        gtk = {
+          enable = true;
+          theme = {
+            name = "Dracula";
+            package = pkgs.dracula-theme;
+          };
+          cursorTheme = {
+            package = pkgs.adwaita-icon-theme;
+            name = "Adwaita";
+          };
+          iconTheme = {
+            package = pkgs.papirus-icon-theme;
+            name = "Papirus-Dark";
+          };
+        };
+      };
+    }
+  ];
+}

modules/applications/gtk/system.nix

@@ -0,0 +1,14 @@
+{ lib, config, ... }:
+let
+  cfg = config.my.applications.gtk.system;
+in
+{
+  options.my.applications.gtk.system = {
+    enable = lib.mkEnableOption "GTK system configuration";
+  };
+
+  config = lib.mkIf cfg.enable {
+    programs.dconf.enable = true;
+    programs.seahorse.enable = true;
+  };
+}