Is there some tool to show me all packages I've installed that are not part of the set of packages that comes with a "clean" install?
I'm just cleaning out packages I don't use any more prior to upgrading from F15 to F16 (the computer has passed hands a number of times and is slowly accumulating unused packages).
I don't want to actually do a fresh install of F16 (so that I can keep some particular packages that I use & config files etc), but I'd like to restore my F15 to as close to a "clean" install as possible before the upgrade.
I've done a little with rpmcleaner and cleanup-packages, but I'd prefer just a list of "packages not in a fresh install of F15", bonus points if it displays in an 'Add/Remove Software'-type interface (purely because it easily displays package descriptions and it's easier to uncheck a checkbox than yum erase whats-the-package-name-again).