libgnomedb pulls in libgda as a required RDEPEND, so we get this with gtk-sharp: [ebuild N ] gnome-extra/libgda-1.0.4 +debug +doc +firebird -freetds +ldap -mdb +mysql -oci8 -odbc -postgres -sqlite 0 kB [1] [ebuild N ] gnome-extra/libgnomedb-1.0.4 +debug +doc 607 kB [1] [ebuild R ] dev-dotnet/gtk-sharp-1.0.4 +gnome +gnomedb* -gtkhtml -libgda 0 kB [1] Note the -libgda. That is all.
libgda is a dependency of gnomedb, therefore with gnomedb specified in USE, we can not honor a -libgda USE flag. This is expected behavior, closing this as INVALID.