Re: Reproducible build: linux-libre kernel

[Ludovic Courtès]

Leo Famulari <address@hidden> skribis:

> On Thu, Mar 31, 2016 at 10:26:09AM +0200, Ludovic Courtès wrote:
>> Leo Famulari <address@hidden> skribis:
>> 
>> > On Wed, Mar 30, 2016 at 11:25:54PM +0200, Ludovic Courtès wrote:
>> >> This is time-consuming but also very valuable work, so big thanks!
>> >
>> > Indeed! I'm really glad for this patch!
>> >
>> > Building with --rounds=2 right now :)
>> 
>> Almost there, but not quite!  :-)
>> 
>> I’ve just built it on x86_64, and:
>> 
>> --8<---------------cut here---------------start------------->8---
>> $ git describe 
>> v0.10.0-36-g4827b36
>> $ ./pre-inst-env guix challenge linux-libre
>> updating list of substitutes from 'https://mirror.hydra.gnu.org'... 100.0%
>> updating list of substitutes from 'https://hydra.gnu.org'... 100.0%
>> /gnu/store/n20i0s96p29vkl07vlvxli5xql3m3hgi-linux-libre-4.5 contents differ:
>>   local hash: 0sh393xb88sybf2dnk73yya02s3bflb29qswj0fn9lzbgiwk000a
>>   
>> https://mirror.hydra.gnu.org/nar/n20i0s96p29vkl07vlvxli5xql3m3hgi-linux-libre-4.5:
>>  0l2la1l9q6qiyf4i6pmbvvmh94l70yvzx4kdvqjyl7d9irykivma
>>   
>> https://hydra.gnu.org/nar/n20i0s96p29vkl07vlvxli5xql3m3hgi-linux-libre-4.5: 
>> 0l2la1l9q6qiyf4i6pmbvvmh94l70yvzx4kdvqjyl7d9irykivma
>> --8<---------------cut here---------------end--------------->8---
>
> Would hydra have already built with the lastest patch?

Yes, according to the ‘git describe’ output above.

It might be that this discrepancy shows up only when building on
machines with different CPU flavors, in which case --rounds doesn’t
help.

Ludo’.