Please use "gnome2_schemas_update" instead of "gnome2_schemas_update --uninstall" in pkg_postrm(); the --uninstall argument to glib-compile-schemas has had no effect since glib-2.25.11, and has been removed entirely in glib-2.31.x. See bug #394501.
Fixed by a non-maintainer commit. The change is completely safe, and glib-2.32 is going to be released and added to portage soon. > 08 Mar 2012; Alexandre Rostovtsev <tetromino@gentoo.org> gwaei-3.0.2.ebuild: > Non-maintainer commit: do not use gnome2_schemas_update --uninstall (bug > #394731)