$ gjs $(guix build gnome-shell)/share/gnome-shell/org.gnome.Shell.Extensions

(org.gnome.Shell.Extensions:29999): Gjs-CRITICAL **: 10:51:47.380: JS ERROR: Error: Requiring Gtk, version 4.0: Typelib file for namespace 'Gtk', version '4.0' not found
@resource:///org/gnome/Shell/Extensions/js/main.js:6:17
start@resource:///org/gnome/gjs/modules/script/package.js:190:5
@/gnu/store/w0wqklmnvwvr3gvin2ar2qjbfmqmf0da-gnome-shell-41.0/share/gnome-shell/org.gnome.Shell.Extensions:1:17


(org.gnome.Shell.Extensions:29999): Gjs-CRITICAL **: 10:51:47.380: Script /gnu/store/w0wqklmnvwvr3gvin2ar2qjbfmqmf0da-gnome-shell-41.0/share/gnome-shell/org.gnome.Shell.Extensions threw an exception