From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 45DC4C04AB5 for ; Mon, 3 Jun 2019 18:40:26 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0FA7D26D41 for ; Mon, 3 Jun 2019 18:40:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0FA7D26D41 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass 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List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Daniel P. Berrange" , Eduardo Habkost , QEMU Developers , Markus Armbruster , Cleber Rosa , =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 6/3/19 2:27 PM, Peter Maydell wrote: > On Mon, 3 Jun 2019 at 19:21, John Snow wrote: >> I get it, we don't want to require Python 3.8 because some dev wanted >> assignment conditionals -- but we're talking about Python 2 here, which >> suffers its EOL by the end of this calendar year. >> >> So do we think it's reasonable to drop support for Python2 for the >> release that comes out after Python2's EOL, or do we insist on 2x3 >> simultaneous support for years more? > > I don't have a strong opinion on Python in particular, but > I think it would be nicer to avoid the "python is a special > snowflake" effect. Would it really be so bad for it to just > be "drop it when it falls off the last LTS distro" like the > rest of our dependencies ? > > thanks > -- PMM > When it comes to supporting both 2 and 3 simultaneously yes; it's in my opinion not trivial to maintain a growing testing and utility infrastructure that works in versions as disparate as 2.7 and 3.7 from RHEL7 all the way to Fedora 30. It's not going to get easier, either. (Especially not after EOL.) For comparison, at least when we target different versions of compilers, we are at least targeting the same version of the language... If you are running a stable or outdated distro and you want to build bleeding edge QEMU and you cannot somehow find out how to get Python3 on your machine after the official EOL of python2, I am not sure that should become the developer's burden. I don't think we are being too unreasonably avant-garde about adopting technologies that are too new. --js