Re: Python 3.5 EOL; when can require 3.6?

[Daniel P . Berrangé]

On Thu, Sep 17, 2020 at 12:19:19PM -0400, Eduardo Habkost wrote:
> On Wed, Sep 16, 2020 at 04:00:14PM +0200, 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.
> 
> Thank you very much for the summary.  I've added this info to
> https://wiki.qemu.org/Supported_Build_Platforms
> 
> Has anybody been able to find information om SLES Python
> versions?  I can't find this anywhere.

It is slightly tedious, but I was pointed at

  https://scc.suse.com/api/package_search/products

where you find the product ID.

eg SLES 15  is ID 1609

which you can plug into

https://scc.suse.com/api/package_search/packages?product_id=1609&amp;query=python

and that somes some package names like "libpython3_6" so 3.6.5
looks like a match,

This looks like it matches openSUSE Leap 15, which suggest we
probably don't need to look at SLES directly.


SLES 15 was released in July 2018, so with our 2 year overlap for the
previous release, we can consider SLES 12sp2 unsupported from this
release cycle.

Regards,
Daniel
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