[Distutils] Setuptools - Removing Old Packages

[Marcus]

I'm using easy_install for managing automatic updates to an application. 
I include the "--multi-version", "--upgrade", and "--install-dir" 
options, so that only an egg is copied to the directory I specify.

I see that the current recommendation is to manually remove old 
packages, since there isn't an uninstall feature of setuptools. How 
would I go about detecting obsolete eggs myself, so that I can remove 
them programatically after downloading the latest version of an egg?

Thanks,

Marcus