Comment 4 for bug 285746

It's been discussed elsewhere that tracking packages deeply enough to differentiate between locally installed ones and crufty ones is quite tricky, and should be done later.

I spoke to Lars and suggested that in the short term (probably as a SRU after release) there be a whitelist of commonly installed third party packages. Lars suggested that there be a conf.d, which I think is a great idea. This will allow him to supply a list of commonly installed packages, but will also make it really easy for people to add their own, so you'll be able to stop the cleanup tool from removing your favourite third party software.