bug#74204: [bug#74112] bug#74204: Guix is not reproducible

[Hilton Chain]

Hello again,

On Tue, 05 Nov 2024 18:31:04 +0800,
Hilton Chain via Guix-patches via wrote:
>
> Hi Jakob,
>
> On Tue, 05 Nov 2024 02:38:34 +0800,
> Jakob Kirsch via Bug reports for GNU Guix wrote:
> >
> > I've recently noticed that `guix challenge guix` fails since guix isn't
> > reproducible at the moment. As someone pointed out on XMPP, this is due to
> > parallelism issues with Guile so running `guix build guix --no-grafts
> > --cores=1 --check` reliably produces the same output.
> >
> > I've sent a simple patch in #74112 to address this and I think this is
> > important since the main guix package should definitely be reproducible so 
> > it
> > can be trusted.
>
> I can confirm the reproducibility issue.
>
> I have two x86_64-linux machines building guix to verify the fix, I'll apply
> your patch once they produce matching outputs.

Took me quite a while to build 5 rounds. :)

--8<---------------cut here---------------start------------->8---
$ guix hash --serializer=nar 
/gnu/store/fs7x07jfn7igpkwv3alrs9by21q70y13-guix-1.4.0-26.5ab3c4c
0kh87wb4qn97kwzrf4igal71cjvv143j6jr2y3dwfzcy1madj1ll
--8<---------------cut here---------------end--------------->8---

Applied #74112 as 4c56d0cccdc44e12484b26332715f54768738c5f, thanks!