From mboxrd@z Thu Jan  1 00:00:00 1970
From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Subject: Re: Can we increase the print width/column in daemon backtraces
Date: Tue, 17 Sep 2019 10:58:58 +0900
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References: <87tvbn7ff3.fsf@ambrevar.xyz> <87k1cjihvm.fsf@elephly.net>
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In-Reply-To: <87h87n78yf.fsf@ambrevar.xyz> (Pierre Neidhardt's message of
 "Mon, 15 Jul 2019 14:56:08 +0200")
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To: Pierre Neidhardt <mail@ambrevar.xyz>
Cc: guix-devel@gnu.org

Hello Pierre,

Pierre Neidhardt <mail@ambrevar.xyz> writes:

> Ricardo Wurmus <rekado@elephly.net> writes:
>
>> Set the COLUMNS environment variable to some large value.
>
> Hmm... I use Eshell (in Emacs), in which the COLUMNS env variable is automatically
> set to the Emacs window width.  For instance right now I have 190.  And
> the daemon still displays truncated message (i.e. way shorter than 190).
>
> Is there something else to do then?
> I'll also try with a (more) regular shell.

The daemon is run as 'root' on a Guix system, so you need to set this
environment variable for the 'root' user session.  As an example, I set
this in my /root/.bash_profile file:

--8<---------------cut here---------------start------------->8---
export COLUMNS=160              # wider Guile backtraces
--8<---------------cut here---------------end--------------->8---

HTH!

Maxim