Well, this is pretty much what I described above The external package/launcher is IMHO a good solution for this because it does not require each and every maintainer to come up with such a solution on his/her own, i.e. it requires no actual code changes, just config file differences (if you depend on the given package and state your files, all of what you list would happen automatically). I find 'how to use this app' in the description fields too obscure, maybe even non-intuitive. I know we're using it for that now, but only because we don't have a real alternative.