Hi,

Dnia wtorek, 1 października 2024 20:09:18 CEST Jeremy Stanley pisze:

> On 2024-10-01 10:41:57 -0700 (-0700), Ghanshyam Mann wrote:

> > As you know, we have a flag 'python_requires' in setup.cfg which

> > is pinned to the minimum python version supported[1]. Every time

> > we upgrade our Python testing, we usually bump the minimum python

> > version in setup.cfg and that prevents the project from being

> > installed on lower Python versions. We do have list of tested and

> > supported Python versions in setup.cfg classifier, which is good

> > and enough information to tell what all Python versions are

> > tested[2].

> >

> > Flag  'python_requires' creates an issue (which has happened many

> > times in the past) when a dependency like oslo lib bumps the

> > version, and it makes all projects testing old Python versions

> > fail. I know we should remove the old Python versions tested from

> > projects first, but somehow, we all are busy, and a coordinated

> > effort is always missed.

> >

> > IMO, we should remove this flag as it creates more issues than

> > benefits. opinion? It will also help to continue users to install

> > things on old python versions if it is working for them.

> [...]

>

> The entire point of that value is that, if the software can't work

> on a particular older version of the CPython interpreter, pip will

> choose the most recent release of the package known to work on the

> user's interpreter. If we drop it, anyone using pip to install on

> older Python versions will end up installing the latest releases of

> our packages (assuming declared minimum versions of dependencies

> will work with that interpreter).

>

> Increasing the value too early does cause problems for development

> of projects depending on that package, but removing it causes

> problems for users installing from PyPI. Can't we just do a better

> job of gauging when it's safe to increase the setting?

> --

> Jeremy Stanley

>

Just for the record, I checked in the 2023 user survey results [1] and it seems that about 18% of users are installing OpenStack using pypi so this is significant number IMO and we shouldn't make their life harder.

[1] https://governance.openstack.org/tc/user_survey/analysis-2023.html#how-are-you-consuming-openstack

--

Slawek Kaplonski

Principal Software Engineer

Red Hat