From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp2 ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms11 with LMTPS id cDLyI444zF7fVAAA0tVLHw (envelope-from ) for ; Mon, 25 May 2020 21:28:46 +0000 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp2 with LMTPS id 2LsGH444zF4hUgAAB5/wlQ (envelope-from ) for ; Mon, 25 May 2020 21:28:46 +0000 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id 53F809403EC for ; Mon, 25 May 2020 21:28:46 +0000 (UTC) Received: from localhost ([::1]:44432 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jdKeL-00038h-AK for larch@yhetil.org; Mon, 25 May 2020 17:28:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35656) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jdKeD-00038X-SA for guix-devel@gnu.org; Mon, 25 May 2020 17:28:37 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:57960) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jdKeC-0008FX-KF; Mon, 25 May 2020 17:28:36 -0400 Received: from [2a01:e0a:1d:7270:af76:b9b:ca24:c465] (port=52412 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1jdKeB-0007QH-CN; Mon, 25 May 2020 17:28:36 -0400 From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: Pierre Neidhardt Subject: Re: Can we increase the print width/column in daemon backtraces References: <87tvbn7ff3.fsf@ambrevar.xyz> <87k1cjihvm.fsf@elephly.net> <87h87n78yf.fsf@ambrevar.xyz> <87muf38yzh.fsf@gmail.com> <87k117x9m7.fsf@ambrevar.xyz> <87zh9xxc8b.fsf@gnu.org> <87v9kko1ci.fsf@ambrevar.xyz> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 7 Prairial an 228 de la =?utf-8?Q?R=C3=A9volution?= X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Mon, 25 May 2020 23:28:33 +0200 In-Reply-To: <87v9kko1ci.fsf@ambrevar.xyz> (Pierre Neidhardt's message of "Mon, 25 May 2020 10:39:09 +0200") Message-ID: <87tv03snzy.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: guix-devel@gnu.org, Maxim Cournoyer Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Scanner: scn0 Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=none; spf=pass (aspmx1.migadu.com: domain of guix-devel-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-devel-bounces@gnu.org X-Spam-Score: -1.01 X-TUID: 638sPrQD0q8+ Hi, Pierre Neidhardt skribis: > The COLUMN environment option (set in root's .bash_profile) does not > extend the print width of backtraces when running `guix build`. I understand, but which backtraces are we talking about? COLUMNS only helps if you wish to debug =E2=80=98guix build=E2=80=99 itself= . It cannot influence Guile processes launched by the daemon, such as those that build derivations and the helper processes (=E2=80=98guix substitute=E2=80= =99, etc.). In most cases, we=E2=80=99re interested in backtraces coming from Guile processes that build derivations. For that, we need to set COLUMNS in the #:env-vars argument of =E2=80=98gexp->derivation=E2=80=99 or similar. HTH! Ludo=E2=80=99.