I don't get it still. BTW, what is "application:Firefox-.noarch" at all? Please also see bug 948708 which was reported against 13.2 and the package from the mozilla repo which is identical to the one in Factory/TW (except version dependent things). I'll submit a new Firefox package asap with the following addition: %if "%{update_channel}" != "aurora" Provides: appdata() Provides: appdata(firefox.appdata.xml) %endif (the appdata xml is not installed if we build dev edition from the same spec). But this is just a try to fix the dependency issue which I still do not understand.