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Re: Python 3.5 EOL; when can require 3.6?


From: John Snow
Subject: Re: Python 3.5 EOL; when can require 3.6?
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

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 <armbru@redhat.com> 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




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