From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#22088: Non-deterministic daemon protocol errors
Date: Fri, 04 Dec 2015 11:40:38 +0200
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References: <874mfztcuo.fsf@netris.org>
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To: Mark H Weaver <mhw@netris.org>
Cc: 22088-done@debbugs.gnu.org

Mark H Weaver <mhw@netris.org> skribis:

> Since updating my guix client (but not yet my server) to include the
> recent commits related to the protocol update, I'm seeing these errors
> non-deterministically while building things.  Retrying usually results
> in success.
>
> mhw@jojen:~/guix$ guix build -K openssl --cores=3D1
> substitute: updating list of substitutes from 'http://hydra.gnu.org'... 1=
00.0%
> The following derivation will be built:
>    /gnu/store/5hzf27bgygjp5ah3bfy8m0aa93yazgk3-openssl-1.0.2e.drv
> guix build: error: build failed: EOF expected (protocol error?)

This is because the =E2=80=98build-things=E2=80=99 RPC would always use the=
 new
protocol, even when talking to old daemons.

Fixed in 2734cbb.

Thanks, and sorry for the confusion!

Ludo=E2=80=99.