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 YHZZJaBnsl9ZBwAA0tVLHw (envelope-from ) for ; Mon, 16 Nov 2020 11:50:56 +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 eHAeIaBnsl//GQAAbx9fmQ (envelope-from ) for ; Mon, 16 Nov 2020 11:50:56 +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 5EA1C9401CD for ; Mon, 16 Nov 2020 11:50:56 +0000 (UTC) Received: from localhost ([::1]:58948 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ked27-0004ZS-9l for larch@yhetil.org; Mon, 16 Nov 2020 06:50:55 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:50646) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ked1x-0004Yc-6F for guix-devel@gnu.org; Mon, 16 Nov 2020 06:50:45 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]:60756) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ked1w-00085m-6Y; Mon, 16 Nov 2020 06:50:44 -0500 Received: from [2a01:e0a:1d:7270:af76:b9b:ca24:c465] (port=47714 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1ked1s-00005e-Qh; Mon, 16 Nov 2020 06:50:41 -0500 From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: Pierre Neidhardt Subject: Re: A plan for parameterized packages References: <87eeku8trb.fsf@gnu.org> <87mtzi8r4j.fsf@guixSD.i-did-not-set--mail-host-address--so-tickle-me> <875z665xbv.fsf@ambrevar.xyz> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 26 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: Mon, 16 Nov 2020 12:50:39 +0100 In-Reply-To: <875z665xbv.fsf@ambrevar.xyz> (Pierre Neidhardt's message of "Sun, 15 Nov 2020 18:44:36 +0100") Message-ID: <87y2j1y0z4.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, =?utf-8?Q?Nicol=C3=B2?= Balzarotti Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" 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 guix-devel-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-devel-bounces@gnu.org X-Spam-Score: -1.51 X-TUID: rw9mVIlOzBc6 Hi Pierre, Pierre Neidhardt skribis: > One of the biggest struggle we had when discussing it was figuring out > what to do about parameter propagation across dependencies. > > For instance, what if we want to build "all packages without X support"? > This means that the parameter must traverse all inputs recursively if we > don't want to drag X indirectly. > > If I understand your change correctly, the patch is only applying > parameters to the given package and it's not propagated to the inputs, > is that correct? That=E2=80=99s correct: in this patch set parameters are per-package, and I think it=E2=80=99s easier to start simple, but we could implement what you describe without too much hassle I think. For example, you=E2=80=99d type =E2=80=98--with-parameters=3Dx11=3Dfalse=E2= =80=99, and that=E2=80=99d be applied to all the packages that have an =E2=80=98x11=E2=80=99 parameter. Ludo=E2=80=99.