The gtk2 use-flag has been deprecated since quite some time now, though the new ogmrip version uses it. Also historically it was only there to determine which one to use if there is a gtk-1 AND a gtk-2 version of an application, as ogmrip only has the latter, using it makes no sense at all Solution is simple: Just replace the gtk2 use-flag with "gtk"
This has now been fixed, so closing