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Date: Thu, 2 Jan 2025 11:38:09 -0500
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Subject: Test: python312-3.12.8-1 venv fails due to pip wheel?
To: marco DOT atzeri AT gmail DOT com
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From: Robert Terzi via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Robert Terzi <rct+cygwin AT r-t DOT org>
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Testing the 3.12 package, trying to make a virtual env fails. I think this is because it is looking for the pip wheel.

I've installed the available 3.12 packages (pip, wheel, setuptools, devel).

venv fails with/without --system-site-packages.  I think venv is trying to run '-m ensurepip' which seems to
have a dependency on pip wheel.

$ python3.12 -m venv /srv/pyvenvs/py312
Error: Command '['/srv/pyvenvs/py312/bin/python3.12', '-m', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1.

$ python3.12 -m venv --system-site-packages /srv/pyvenvs/py312
Error: Command '['/srv/pyvenvs/py312/bin/python3.12', '-m', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1.

Trying -m ensurepip directly yields:
$ python3.12 -m ensurepip
[...snip...]
FileNotFoundError: [Errno 2] No such file or directory: '/usr/lib/python3.12/ensurepip/_bundled/pip-24.3.1-py3-none-any.whl'

This works with the previously working 3.9 installation.  (I haven't tried the updated 3.9 install yet.)

For 3.9 it looks like the pip*.whl file is in a different location:

$ find /usr/lib/python* -name 'pip*.whl'
/usr/lib/python3.9/site-packages/virtualenv/seed/wheels/embed/pip-20.3.4-py2.py3-none-any.whl
/usr/lib/python3.9/site-packages/virtualenv/seed/wheels/embed/pip-21.3.1-py3-none-any.whl
/usr/lib/python3.9/site-packages/virtualenv/seed/wheels/embed/pip-23.0.1-py3-none-any.whl

I haven't tried to install/build any modules/wheels since the intent was to test the new packages.
Hopefully I'm not missing something obvious.

Thanks!


On 12/30/2024 8:53 AM, Marco Atzeri via Cygwin-announce wrote:
> New test release for
>
>     python312    3.12.8-1
>
> new releases for
>
>     python312-doc    3.12.8-1
>
>     python{39,312}-packaging    24.2-1
>     python{39,312}-pip        24.3.1-1
>     python{39,312}-setuptools    75.6.0-1
>     python{39,312}-wheel        0.45.1-1
>
> CHANGES
> latest upstream 3.12.x release. First packaged for Cygwin
>
> CYGWIN CHANGES
> Only python 3.9 and 3.12 are updated.
> Python 2, 3.6, 3.7, 3.8 are not anymore supported upstream.
>
> https://devguide.python.org/versions/#versions
>
> The main packages include postinstall script that
> use "alternatives" to define for
>
>    /usr/bin/python
>
>    /usr/bin/python3
>    /usr/bin/idle3
>    /usr/bin/pydoc3
>
> a default to the highest package available.
>
> $ alternatives --display python
> python - status is auto.
>  link currently points to /usr/bin/python3.12
> /usr/bin/python3.9 - priority 39
> /usr/bin/python3.12 - priority 312
> Current `best' version is /usr/bin/python3.12.
>
> Rationale:
> https://www.python.org/dev/peps/pep-0394/
> In other systems as Debian
> /usr/bin/python is discouraged.
>
> DESCRIPTION
> Python is a programming language that lets you work quickly
> and integrate systems more effectively.
> Python is powerful... and fast; plays well with others;
> runs everywhere; is friendly & easy to learn; is Open.
>
> HOMEPAGE
> https://www.python.org/
>
> Regards
> Marco Atzeri
>
>
> If you have questions or comments, please send them to the
> cygwin mailing list at: cygwin (at) cygwin (dot) com .


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