Use patched gtk3

modules/graphical/compositor/default.nix

@@ -156,6 +156,29 @@ in
   };
 
   config = lib.mkIf config.chvp.graphical.compositor.enable {
+    nixpkgs.overlays = [
+      (self: super: {
+        gtk3 = super.gtk3.overrideAttrs (old: {
+          patches = (old.patches or [ ]) ++ [
+            (pkgs.writeText "no-csd.patch" ''
+              diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
+              index 8df1c8e861..d102017942 100644
+              --- a/gtk/gtkwindow.c
+              +++ b/gtk/gtkwindow.c
+              @@ -6121,8 +6121,7 @@ gtk_window_should_use_csd (GtkWindow *window)
+               #ifdef GDK_WINDOWING_WAYLAND
+                 if (GDK_IS_WAYLAND_DISPLAY (gtk_widget_get_display (GTK_WIDGET (window))))
+                   {
+              -      GdkDisplay *gdk_display = gtk_widget_get_display (GTK_WIDGET (window));
+              -      return !gdk_wayland_display_prefers_ssd (gdk_display);
+              +      return FALSE;
+                   }
+               #endif
+            '')
+          ];
+        });
+      })
+    ];
     services = {
       dbus.packages = with pkgs; [ dconf ];
       greetd = {