On Thursday, May 30, 2019, Samuel Sieb <sam...@sieb.net> wrote:
> On 5/30/19 1:56 PM, Chris Murphy wrote: > >> On Thu, May 30, 2019 at 8:40 AM Daniel Mach <dm...@redhat.com> wrote: >> >>> >>> Dne 30. 05. 19 v 0:05 Neal Gompa napsal(a): >>> >>>> >>>> I'm pretty sure this would break DeltaRPMs, since none of the drpm >>>> software has been updated to handle zstd compression. Neither drpm nor >>>> deltarpm handle it today. >>>> >>>> Thanks for heads-up. We'll look into it and provide a fix soon. >>> >> >> I have no idea how deltarpm works, but if working on bit level >> difference on uncompressed data, I don't see why local rebuild needs >> to use the same compression level as the Fedora build system. If it's >> working on compressed data, well I'm not sure how that works, in >> particular if pixz is used which gives non-reproducible results. >> > > I was going to suggest earlier that deltarpm could use a faster > compression when repacking. But then I realized that the result has to be > be bit-exact with the original so the package signing is still intact. > > Yes or not compress at all - but that would mean singing the drpm itself and validate that instead of relying on the resulting rpm. (That would require some work though).
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