Subject: bug#34461: Debugging build failures on Berlin / qemu-minimal-2.10 not available on Berlin build farm

From: Leo Famulari <[email-masked]>
Date: Tue, 12 Feb 2019 14:54:00 -0500

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 know how to use the Hydra web interface to debug build failures but I
need help getting started with Berlin.