Keeping old versions of packages

[Bruno Wolff III]

On Wed, Apr 10, 2013 at 00:05:45 +0800,
   Mathieu Bridon <bochecha at fedoraproject.org> wrote:
>The current behaviour would be obtained by setting it to 1, and 
>setting it to 2 would already be a positive change as it would allow 
>downgrading a package if the update went wrong.

I don't think that is really what you want either. The idea is to keep 
recently obsoleted updates around, not 2 or 3 versions of everything.

The change has some other benefits. Reverting bad updates in rawhide 
would be easier. You can use yum downgrade instead of having to going 
look at koji and download builds. Dealing with packages dropping out 
of repos when moving between test and updates. The latter issue is 
especially bad with branched during freezes.