Hi. Running any gtk4 demo in the latest g-golf doesn't show a window. For example, the drawing-widget demo doesn't render a window.
Running in terminal:
```
linusshoravi@localhost:~/Documents/Projects/g-golf/examples/gtk-4$ guix shell guile guile-g-golf gtk
...
linusshoravi@localhost ~/Documents/Projects/g-golf/examples/gtk-4 [dev]$ ./drawing-widget
(guile:315625): GLib-GObject-CRITICAL **: 16:29:44.715: cannot register existing type 'GdkPixbuf'
(guile:315625): GLib-GObject-CRITICAL **: 16:29:44.715: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
(guile:315625): GLib-GObject-CRITICAL **: 16:29:44.715: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
(guile:315625): GLib-CRITICAL **: 16:29:44.715: g_once_init_leave: assertion 'result != 0' failed
```
Nothing shows, but I see the process in my dash. Any tips?
Thanks!
Linus