On one system running GuixSD, Gnome Shell crashes when opening the
activities overview (super key, or clicking on the activities button in
the top left).


(.gnome-shell-real:2471): GLib-GIO-CRITICAL **: 10:36:30.639: g_file_new_for_path: assertion 'path != NULL' failed

(.gnome-shell-real:2471): GLib-GIO-CRITICAL **: 10:36:30.639: g_loadable_icon_load: assertion 'G_IS_LOADABLE_ICON (icon)' failed

(.gnome-shell-real:2471): Gtk-WARNING **: 10:36:30.639: Could not load a pixbuf from icon theme.
This may indicate that pixbuf loaders or the mime database could not be found.
**
Gtk:ERROR:gtkicontheme.c:4261:gtk_icon_info_load_icon_finish: assertion failed: (icon_info_get_pixbuf_ready (icon_info))