diff --git a/nixos/system/default.nix b/nixos/system/default.nix
index f20128e..2ef567a 100644
--- a/nixos/system/default.nix
+++ b/nixos/system/default.nix
@@ -8,4 +8,5 @@
     ./fonts
     ./qml.nix
   ];
+  gtk.gtk4.theme = null;
 }
diff --git a/packages.nix b/packages.nix
index f5d5c8d..2b7d261 100644
--- a/packages.nix
+++ b/packages.nix
@@ -1,4 +1,7 @@
 { pkgs }:
+# Note: gtk.gtk4.theme default changed in newer NixOS. To silence the
+# evaluation warning you can set `gtk.gtk4.theme = null;` to adopt the new
+# default, or `gtk.gtk4.theme = config.gtk.theme;` to keep legacy behavior.
 let
   uxplay-fixed = pkgs.uxplay.override {
     avahi = pkgs.avahi.override { withLibdnssdCompat = true; };
@@ -32,7 +35,10 @@ with pkgs;
     parted
 
     # qml/qt6
-    qt6.full
+    qt6.qtbase
+    qt6.qtdeclarative
+    qt6.qtquickcontrols2
+    qt6.qtwayland
     libclang
   ];
 }