forcing package downgrades

[David Asher]

I accidentally enabled the nrpms channel in my smart setup and did an 
upgrade.

This brought in ~77 nrpms packages.  I want to downgrade those packages 
to the versions that fedora/atrpms/freshrpms channels have.  Is there an 
automated way to do this?

Setting the channel priorities seemed like the answer but it doesn't 
work.  Here's what I've tried:

1. Enable all channels I want packages from.
2. Enable nrpms as well.
3. smart update
4. smart channel --set nrpms priority=-1000
5. smart upgrade

I expected to see the .nr packages downgraded ...  instead I get "no 
interesting upgrades".

Am I on the wrong track?

David.