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 cJwQCyY311/WUQAA0tVLHw (envelope-from ) for ; Mon, 14 Dec 2020 09:57:58 +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 SMPyBiY311/IJAAAB5/wlQ (envelope-from ) for ; Mon, 14 Dec 2020 09:57:58 +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 F40B5940B5D for ; Mon, 14 Dec 2020 09:52:57 +0000 (UTC) Received: from localhost ([::1]:34840 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kokXI-0007fU-Tq for larch@yhetil.org; Mon, 14 Dec 2020 04:52:56 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:32986) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kokX9-0007f9-Fp for guix-devel@gnu.org; Mon, 14 Dec 2020 04:52:47 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]:49355) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kokX9-00058Y-0g; Mon, 14 Dec 2020 04:52:47 -0500 Received: from [2a01:e0a:1d:7270:af76:b9b:ca24:c465] (port=39768 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1kokX8-0001qa-Ks; Mon, 14 Dec 2020 04:52:46 -0500 From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: Christopher Baines Subject: Re: New =?utf-8?B?4oCcdW5ncmFmdGluZ+KAnQ==?= branch References: <87v9dcv8mt.fsf@gnu.org> <87ft4gi0iw.fsf@cbaines.net> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 24 Frimaire 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: Mon, 14 Dec 2020 10:52:45 +0100 In-Reply-To: <87ft4gi0iw.fsf@cbaines.net> (Christopher Baines's message of "Tue, 08 Dec 2020 19:02:47 +0000") Message-ID: <87v9d4vhn6.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-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 Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-TUID: dSyZLyfjE3GM Hi, Christopher Baines skribis: > Ludovic Court=C3=A8s writes: > >> Following discussions on IRC, I=E2=80=99ve created a new =E2=80=98ungraf= ting=E2=80=99 branch >> that does nothing but ungraft things. >> >> The rationale is that grafts incur additional overhead when installing >> things (the time to create those grafts), so it=E2=80=99s good to clean = them up >> once in a while. Ungrafting in a dedicated branch means we know the >> branch is =E2=80=9Csafe=E2=80=9D, unlike more exploratory branches like = =E2=80=98staging=E2=80=99 and >> =E2=80=98core-updates=E2=80=99. >> >> The plan is to start building it later today, and to hopefully be done >> in a week or so. >> >> Thoughts? > > Sounds good. I'm not quite sure what you mean by safe though, it's > definitely likely that things will behave the same, but it's not > certain. Additionally, I guess there will be cases were things fail to > build when the replacement is used in the build process. My na=C3=AFve thought was that ungrafting things would just work. It=E2=80= =99s not quite the case: there were problems with Pango in particular that Marius fixed. > I thought the process used to be to push the update to > staging/core-updates when the replacement was introduced to master? In practice what happened is that we=E2=80=99d ungraft on these branches la= zily. However, these branches introduce other changes that require more work, so the effect was that we=E2=80=99d end up carrying many grafts for a long = time. This very focused branch is an attempt to address that. We=E2=80=99ll see = if it was a good idea once it=E2=80=99s finally merged. Thanks, Ludo=E2=80=99.