From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp1 ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms11 with LMTPS id kLlhLN3hol/ZBAAA0tVLHw (envelope-from ) for ; Wed, 04 Nov 2020 17:16:13 +0000 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp1 with LMTPS id CKk6KN3hol9DSwAAbx9fmQ (envelope-from ) for ; Wed, 04 Nov 2020 17:16:13 +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 5A6F394050C for ; Wed, 4 Nov 2020 17:16:12 +0000 (UTC) Received: from localhost ([::1]:37266 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kaMOJ-0004xp-CI for larch@yhetil.org; Wed, 04 Nov 2020 12:16:11 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:58886) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kaMOB-0004xf-FY for bug-guix@gnu.org; Wed, 04 Nov 2020 12:16:03 -0500 Received: from debbugs.gnu.org ([209.51.188.43]:38936) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kaMOB-0006l1-6F for bug-guix@gnu.org; Wed, 04 Nov 2020 12:16:03 -0500 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1kaMOB-00086M-2Z for bug-guix@gnu.org; Wed, 04 Nov 2020 12:16:03 -0500 X-Loop: help-debbugs@gnu.org Subject: bug#44327: `guix install` doesn't warn about collison in profile Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Wed, 04 Nov 2020 17:16:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 44327 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: Zhu Zihao Received: via spool by 44327-submit@debbugs.gnu.org id=B44327.160451016131104 (code B ref 44327); Wed, 04 Nov 2020 17:16:03 +0000 Received: (at 44327) by debbugs.gnu.org; 4 Nov 2020 17:16:01 +0000 Received: from localhost ([127.0.0.1]:50479 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kaMO8-00085b-MF for submit@debbugs.gnu.org; Wed, 04 Nov 2020 12:16:00 -0500 Received: from eggs.gnu.org ([209.51.188.92]:58744) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kaMO6-00085P-Bx for 44327@debbugs.gnu.org; Wed, 04 Nov 2020 12:15:59 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]:43900) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kaMNz-0006kR-4j; Wed, 04 Nov 2020 12:15:51 -0500 Received: from [2a01:e0a:1d:7270:af76:b9b:ca24:c465] (port=56810 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1kaMNy-00070S-78; Wed, 04 Nov 2020 12:15:50 -0500 From: Ludovic =?UTF-8?Q?Court=C3=A8s?= References: <86v9esc691.fsf@163.com> <87blgjy9ea.fsf@gnu.org> <86blgdao67.fsf@163.com> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 14 Brumaire an 229 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: Wed, 04 Nov 2020 18:15:48 +0100 In-Reply-To: <86blgdao67.fsf@163.com> (Zhu Zihao's message of "Wed, 04 Nov 2020 09:47:12 +0800") Message-ID: <87o8kd6o1n.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.3 (--) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-Spam-Score: -3.3 (---) X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: 44327@debbugs.gnu.org Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: "bug-Guix" X-Scanner: ns3122888.ip-94-23-21.eu Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of bug-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=bug-guix-bounces@gnu.org X-Spam-Score: -0.01 X-TUID: 5BvNxHzZE/6b Zhu Zihao skribis: >> > I also suggest to raise an error when conflict detected during building >> > profile to force user to resolve it. > >> It should be already the case. :-) > > IIRC the deafult collision handler of union-build is > warn-about-collision which doesn't terminate the build when collision > occured. We=E2=80=99re talking about different things. Whatever happens during =E2=80=98union-build=E2=80=99 happens too late and won=E2=80=99t lead to us= er-friendly errors. I was referring to the mechanism implemented a while back and submitted here: https://issues.guix.gnu.org/27271 > BTW, There's something called "priority" in Nix. The package with higher > priority in manifest will be able to override the package with lower one.= =20 My experience with it (from 8+ years ago, though) is that it was inconvenient and not natural=E2=80=94as a user you don=E2=80=99t want to as= k yourself which package should have the highest priority, you just want to have these things installed. The approach we took is to error out, with a clear diagnostic, when Guix knows beforehand that two packages cannot coexist in the same profile. Thanks, Ludo=E2=80=99.