mass rebuild status

James Antill james at
Wed Feb 9 05:51:02 UTC 2011

On Tue, 2011-02-08 at 20:49 -0700, Kevin Fenzi wrote:
> On Tue, 8 Feb 2011 20:00:44 -0500
> Josh Boyer <jwboyer at> wrote:
> > I believe this wiki page should have been included in the announce
> > mail:
> > 
> >
> > 
> > For those that don't particularly follow devel day-to-day, the blurb
> > about the XZ change is pretty uninformative.  I've tried to dig back a
> > bit and it seems the XZ change is to pick up XZ 5.0.  It seems the
> > rebuild was done to fix Delta RPM generation?  From a package
> > standpoint, will that mean that F14 is incapable of reading F15 RPMs?
> > Does that impact mock?
> The only case it hits is deltas. If you have a package that was built
> in f14, and then a update happens in f15, the delta wouldn't work
> right. (At least this is my understanding). 
> mock shouldn't be affected, nor should f14/f15 rpm read interop. 
> > I'd be happy to flesh out the change a bit more in detail if someone
> > could point me at what is really changing in terms of XZ compression
> > and what it means going forward.  Better late than never.
> Yeah, I wish I could find a good cite... 
> Perhaps the deltarpm and/or xz maintainers could chime in with the
> exact info. 

 This is the first hit for "xz compression deltarpm problem" and
describes the problem perfectly ... although it is from 2009 ;)

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