[Yum] What is the yum comparison rule?

[Jonathan Ryshpan]

On Thu, 2007-02-15 at 21:59 +0100, Jos Vos wrote:
> On Thu, Feb 15, 2007 at 12:40:46PM -0800, Jonathan Ryshpan wrote:
> 
> > I build some of my own package, which I qualify with the distribution
> > string ".jon".  For example, I have built 
> > 	k3b-debuginfo-0.12.17-1.jon
> > 	k3b-extras-nonfree-0.12.17-3.jon
> > Yum does not want to update 
> > 	k3b-debuginfo-0.12.17-1.jon
> > with
> > 	k3b-debuginfo-0.12.17-1.fc6
> > which is available on one of the repositories I access.
> > But does want to update
> > 	k3b-extras-nonfree-0.12.17-3.jon
> > with
> > 	k3b-extras-nonfree-0.12.17-3.lvn6
> > 
> > What's the best way to prevent this.  Should I use a distribution string
> > of ".zzzz"?  Or is there something more reasonable looking?  An epoch?
> 
> Adding an epoch will break comparisons till eternity, so you want
> to avoid using that for your own packages.
> 
> If you want to adapt existing RPMs, better *add* a suffix to the
> existing release (3.fc6.jon) i.s.o. replacing the last token.
> 
> This may also fail at the moment the distributor adds a token to
> the release, but that's why life is not said to be easy... ;-).

Ah well.  I had hoped to do this the easy way by adding the line
	%dist .jon
to my .rpmmacros file, which would then be expanded by a like like
	Release:        3%{?dist}
which appears in most spec files.

BTW: What *is* the yum comparison rule between packages?

Thanks - jon