From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp0 ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms11 with LMTPS id yCkgL3LiYV8qDAAA0tVLHw (envelope-from ) for ; Wed, 16 Sep 2020 10:01:22 +0000 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp0 with LMTPS id KBwOK3LiYV+LOQAA1q6Kng (envelope-from ) for ; Wed, 16 Sep 2020 10:01:22 +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 829439403C8 for ; Wed, 16 Sep 2020 10:01:22 +0000 (UTC) Received: from localhost ([::1]:47578 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kIUFd-0001g1-FH for larch@yhetil.org; Wed, 16 Sep 2020 06:01:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55760) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kIUFH-0001du-5R for guix-devel@gnu.org; Wed, 16 Sep 2020 06:00:59 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:36834) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kIUFF-0001og-Fq; Wed, 16 Sep 2020 06:00:58 -0400 Received: from [2a01:e0a:1d:7270:af76:b9b:ca24:c465] (port=39188 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1kIUFE-0006MW-F1; Wed, 16 Sep 2020 06:00:57 -0400 From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: Mark H Weaver Subject: Re: Dependency cycle issues when using a Gexp-based snippet References: <87h7ssx07p.fsf@gmail.com> <87wo1nzr6p.fsf@gnu.org> <87mu21cuc3.fsf@netris.org> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: Jour de la Vertu de =?utf-8?Q?l'Ann=C3=A9e?= 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: Wed, 16 Sep 2020 12:00:43 +0200 In-Reply-To: <87mu21cuc3.fsf@netris.org> (Mark H. Weaver's message of "Mon, 07 Sep 2020 14:30:41 -0400") Message-ID: <87zh5qnir8.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 , maxim.cournoyer@gmail.com 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: ZPRPXfWiIxy9 Hi Mark, Mark H Weaver skribis: > Ludovic Court=C3=A8s writes: > >> Indeed: the problem is that when loading this module, we try to resolve >> one of the variables referenced in the snippet, but that variable is not >> defined yet because it comes from a module that=E2=80=99s in a dependenc= y circle >> with the one at hand. > [...] >> As Marius noted before, the snippets for ungoogled-chromium and >> linux-libre are contrived because of this limitation. (Perhaps we can >> use =E2=80=98delayed=E2=80=99 instead of =E2=80=98thunked=E2=80=99.) > > I can't speak for ungoogled-chromium, but for Linux-libre and IceCat, > there's at least one other limitation in snippets that are preventing us > from using them: the names of the pre- and post-snippet directories must > be the same. In the case of IceCat, that would force us to either (1) > mislabel the upstream firefox source as "icecat", or (2) mislabel the > transformed icecat source as "firefox". Ditto for "linux-libre" vs > "linux". Good point. That=E2=80=99s something we can probably address without too m= uch difficulty on core-updates. Thanks, Ludo=E2=80=99.