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To: Peter Maydell , Markus Armbruster References: <875z8eupyp.fsf@dusky.pond.sub.org> From: Thomas Huth Message-ID: Date: Wed, 16 Sep 2020 16:00:14 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=thuth@redhat.com X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Content-Language: en-US Received-SPF: pass client-ip=63.128.21.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/16 02:35:56 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -51 X-Spam_score: -5.2 X-Spam_bar: ----- X-Spam_report: (-5.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.999, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.062, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , QEMU Developers , Michael Roth , Stefan Hajnoczi , Cleber Rosa , John Snow Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 16/09/2020 14.30, Peter Maydell wrote: > On Wed, 16 Sep 2020 at 08:43, Markus Armbruster wrote: >> We require Python 3.5. It will reach its "end of life" at the end of >> September 2020[*]. Any reason not to require 3.6 for 5.2? qemu-iotests >> already does for its Python parts. [...] > The default should be > "leave the version dependency where it is", not "bump the version > dependency as soon as we can". OTOH, if none of our supported build systems uses python 3.5 by default anymore, it also will not get tested anymore, so bugs might creep in, which will of course end up in a bad experience for the users, too, that still try to build with such an old version. So limiting the version to the level that we also test is IMHO very reasonable. Let's have a look at the (older) systems that we support and the python versions according to repology.org: - RHEL7 / CentOS 7 : 3.6.8 - Ubuntu 18.04 (Bionic) : >= 3.6.5 - openSUSE Leap 15.0 : >= 3.6.5 - OpenBSD Ports : >= 3.7.9 - FreeBSD Ports : >= 3.5.10 - but there is also 3.6 or newer - Homebrew : >= 3.7.9 ... so I think it should be fine to retire 3.5 nowadays. Thomas