[bug#71024] Update diffoscope to 267 (with xz bonus update)

[Maxim Cournoyer]

Hi Vagrant,

Vagrant Cascadian <vagrant@reproducible-builds.org> writes:

> On 2024-05-20, Vagrant Cascadian wrote:
>> On 2024-05-20, Maxim Cournoyer wrote:
>>> vagrant@reproducible-builds.org writes:
>>>
>>>> From: Vagrant Cascadian <vagrant@reproducible-builds.org>
>>>>
>>>> * gnu/packages/compression.scm (xz-5.4): New variable.
> ...
>> Or fixing diffoscope to work with the older xz version in master
>> (5.2.x?) that guix is already using, which, now that I have spelled out
>> all of the above, seems possibly a much better idea!
>
> This was "fixed" in upstream diffoscope git by setting a version
> requirement on the test, and I think this was a new test, so not exactly
> a regression in test coverage.
>
>   
> https://salsa.debian.org/reproducible-builds/diffoscope/-/commit/17c061e767e612540dd0227c3fd1f9cab460a78f
>
> So we could build diffoscope from that commit instead, or manually apply
> the patch, or just wait till the next diffoscope version.

Given the xz horror story, waiting a bit more seems a good option to me.
Thanks for explaining it in more details; it seems upstream is working
on a cleaned up 5.8.0 version, which isn't ready yet.

-- 
Thanks,
Maxim