
Using the "regular" loadInterfaceXML() helper means less code duplication, but it also ties us to the resource used by gnome-shell. In order to untangle the extension app from core gnome-shell, change that to load the interface from the existing data resource instead. While that does involve reimplementing loadInterfaceXML(), it's not too bad actually with the resource-loading code stripped (as the data resource is already loaded by the package module). https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1081