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 AMTXMQyxHl9iUQAA0tVLHw (envelope-from ) for ; Mon, 27 Jul 2020 10:48:44 +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 eAN6LQyxHl+9ZwAAbx9fmQ (envelope-from ) for ; Mon, 27 Jul 2020 10:48:44 +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 5A21D9403AE for ; Mon, 27 Jul 2020 10:48:44 +0000 (UTC) Received: from localhost ([::1]:40618 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k00gV-0008B9-CZ for larch@yhetil.org; Mon, 27 Jul 2020 06:48:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44180) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k00gN-0008B2-Nm for guix-devel@gnu.org; Mon, 27 Jul 2020 06:48:35 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:54995) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k00gL-0002qQ-JH; Mon, 27 Jul 2020 06:48:33 -0400 Received: from [2a01:e0a:1d:7270:af76:b9b:ca24:c465] (port=39770 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1k00gL-0007UK-4V; Mon, 27 Jul 2020 06:48:33 -0400 From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: Lars-Dominik Braun Subject: Re: [Python] pypy3 integration References: <20200719082714.GB1359@noor.fritz.box> <20200720194254.tiolat2ohihsbgu5@gravity> <20200722064657.GA1350@noor.fritz.box> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 10 Thermidor 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, 27 Jul 2020 12:48:31 +0200 In-Reply-To: <20200722064657.GA1350@noor.fritz.box> (Lars-Dominik Braun's message of "Wed, 22 Jul 2020 08:46:57 +0200") Message-ID: <878sf5z11c.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: Jakub =?utf-8?B?S8SFZHppb8WCa2E=?= , guix-devel@gnu.org 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: DCm8gj9RyisF Hello, Lars-Dominik Braun skribis: >> pypy3 works somewhat well for me already in this regard: > indeed, you=E2=80=99re right. > > This will probably break for some packages, because python provides > Python 3.8 whereas pypy3 provides Python 3.6. (They=E2=80=99ve always la= gged > behind and given that we=E2=80=99re going towards 3.10, well=E2=80=A6) On= e example are > packages depending on importlib.resources, which only became available > with Python 3.7. Unfortunately this includes the widely-used pytest (or > rather: its dependency python-pluggy). > > Also Python=E2=80=99s C ABI is not stable[1] and thus extensions compiled= for 3.8 > can fail in unpredictable ways with 3.6. And looking at python-numpy, > it seems they won=E2=80=99t even load. Also, what about .pyc files? Does pypy create compatible .pyc files? > So, does this justify creating pypy3-* packages? It probably does. But do we want to mirror all the =E2=80=98python-=E2=80= =99 packages, or just some of them? It seems overkill to mirror all of them. Perhaps we could have a package transformation option to turn a =E2=80=98python-build-system=E2=80=99 package into a pypy package? Thanks, Ludo=E2=80=99, who knows little about Python.