From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Subject: bug#34461: Debugging build failures on Berlin / qemu-minimal-2.10 not
	available on Berlin build farm
Date: Mon, 04 Mar 2019 22:27:14 +0100
Message-ID: <87sgw2nxe5.fsf@gnu.org>
References: <20190212195400.GA30887@jasmine.lan>
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In-Reply-To: <20190212195400.GA30887@jasmine.lan> (Leo Famulari's message of
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To: Leo Famulari <leo@famulari.name>
Cc: 34461@debbugs.gnu.org

Hi Leo,

Leo Famulari <leo@famulari.name> skribis:

> Substitutes of the hidden package qemu-minimal-2.10 are available from
> <https://mirror.hydra.gnu.org> but not <https://berlin.guixsd.org>.
>
> I'd like to fix this but I'm not sure how to start debugging things on
> the Berlin build farm.

I would get the .drv file name of that thing and then do:

  guix build --log-file /gnu/store/=E2=80=A6-qemu-minimal.drv \
     --substitute-urls=3Dhttps://berlin.guixsd.org

This should give you the URL of the failed build.

Alternately, you can also go directly to:

  https://berlin.guixsd.org/log/XYZ-qemu-minimal

where =E2=80=9CXYZ-qemu-minimal=E2=80=9D is the *output* file name of that =
thing (not
the .drv file name.)

If that is 404, then most likely the thing was never built.  To
determine why, one would have to inspect /var/log/cuirass.log from
berlin=E2=80=A6

HTH!

Ludo=E2=80=99.