bug#28326: exiv2 0.26 hash mismatch

[Ludovic Courtès]

Maxim Cournoyer <address@hidden> skribis:

> address@hidden (Ludovic Courtès) writes:
>
>> Maxim Cournoyer <address@hidden> skribis:
>>
>>> sha256 hash mismatch for output path 
>>> `/gnu/store/jcapi6vk4a14hch5jgsh5zps958g91sb-exiv2-0.26-trunk.tar.gz'
>>>   expected: 1hsdzlzgkipprqh93yj81mrckl2l7c2mn2i84691pallnjz5qqhc
>>>   actual:   1yza317qxd8yshvqnay164imm0ks7cvij8y8j86p1gqi1153qpn7
>>>
>>> Looking at what happened at the source obtained through the Wayback
>>> Machine at the time it was last updated in Guix[1] compared to now[2], we 
>>> see
>>> that:
>>
>> For the record, as an alternative to the Wayback Machine, you can use:
>>
>>   wget 
>> https://mirror.hydra.gnu.org/file/exiv2-0.26-trunk.tar.gz/sha256/1hsdzlzgkipprqh93yj81mrckl2l7c2mn2i84691pallnjz5qqhc
>
> Thanks for the tip! I actually tried to find a way to download that file
> from Hydra for the investigation but couldn't figure it out (by using
> the Hydra web front-end).

This URL is implemented by ‘guix publish’:

  https://www.gnu.org/software/guix/manual/html_node/Invoking-guix-publish.html

Not very discoverable I admit!

Ludo’.