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Re: Deltarpm xz problem with PPC generated rpms?



On Mon, 2009-09-14 at 15:43 -0400, James Antill wrote:
> On Mon, 2009-09-14 at 20:29 +0300, Jonathan Dieter wrote:
> > On Mon, 2009-09-14 at 20:25 +0300, Jonathan Dieter wrote:
> > > Ok, I've just had a conversation on IRC with Lasse Collin, the
> > > maintainer of xz.  He's now planning on changing xz so it will produce
> > > the same output independent of endianess.  He hasn't committed to any
> > > timeframe, though.
> > 
> > <snip>
> > 
> > Sorry, forgot to mention, another option would be to sign the
> > *uncompressed* data in an rpm, so if the compressed data was different,
> > it wouldn't matter.
> > 
> > This would be a lot easier from the maintenance side of things, but I'm
> > not sure how feasible this big of a change in rpm would be.
> 
>  That doesn't work, before yum checks the signatures it checks the
> createrepo checksum ... which is a sha256 (or whatever) of the entire
> rpm¹. So deltarpm must produce exactly the same bits.
> 
> 
> ¹ Asking someone to change this to be the headers plus uncompressed data
> is likely to be unhealthy for you.

So I'll just keep my mouth shut and not bring this suggestion up
again. :)  Along with the other one that I'm never supposed to speak of
again.

Jonathan

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