[Yum] howto revert all packages from an auxiliary repo

[seth vidal]

On Thu, 2006-02-16 at 14:55 +0100, Hans-Peter Jansen wrote:
> Hi,
> 
> what is the best procedure to revert (downgrade) all packages of a 
> specific repo, e.g. if distri comes with KDE 3.4.0, and KDE 3.5.1 is 
> available from an auxiliary repo. Upgrading is as easy as enabling this 
> repo and running "yum update", you all know. Now considering, that 
> there are some unacceptable bugs, I wanted to revert to the base 
> packages. 
> 
> Manually running "rpm --oldpackage" with all previously updated packages 
> and their dependencies is a tedious task (given, they're scattered over 
> several repos..). Anything yum can offer to ease that unfortunate 
> exercise? 

downgrading isn't handled by yum mainly b/c the behavior of a downgrade
is unknown given that %scriptlets aren't reliably reversable.

Could it be implemented? Yes. Would you be able to rely that you
actually have your old system back? No.

-sv