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To: Thomas Huth , Peter Maydell , Markus Armbruster References: <875z8eupyp.fsf@dusky.pond.sub.org> From: John Snow Message-ID: <3e3bbd65-314b-7b55-6066-8ac3e259865a@redhat.com> Date: Wed, 16 Sep 2020 10:57:37 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jsnow@redhat.com X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Received-SPF: pass client-ip=216.205.24.124; envelope-from=jsnow@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/16 02:16:02 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: QEMU Developers , Cleber Rosa , Eduardo Habkost , Stefan Hajnoczi , Michael Roth Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 9/16/20 10:00 AM, Thomas Huth wrote: > 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 > Thanks for researching this! I am going to transplant this into my commit message in my QAPI typing series. Thank you very much! --js