What are these yum plugins for ? (kmod-nvidia related)

[Linuxguy123]

On Wed, 2009-03-04 at 10:36 -0800, suvayu ali wrote:
> 2009/3/4 Axel Thimm <Axel.Thimm at atrpms.net>:
> > Neither should the other plugins do, but at the very end you will only
> > know for sure if you start disabling them one by one. Edit
> >
> > /etc/yum/pluginconf.d/*.conf
> >
> > and set
> >
> > enabled=0
> >
> > to disable the plugin(s) and try again.
> 
> or use yum --disableplugin=[plugin]

I disabled all of them.  No kmod-nvidia packages become available.