Mail Archives: cygwin/2025/01/02/13:30:24

Michael Cook via Cygwin <cygwin AT cygwin DOT com> · Thu, 2 Jan 2025 13:28:43 -0500

All the pip install commands I tried worked.
But I did see one of my scripts hang trying to run an external command (via
the subprocess module).
I've seen that only once so far.

On Thu, Jan 2, 2025 at 1:23 PM Robert Terzi via Cygwin <cygwin AT cygwin DOT com>
wrote:

> Thanks Michael that worked to create the venv.
>
> Did you have any success with pip installs?
>
> For me, simple modules like requests worked but for larger things like
> ipython, Python 3.12 hung hard downloading requirements.
>
> Downloading pygments-2.18.0-py3-none-any.whl (1.2 MB)
>     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 0.0/1.2 MB ? eta
> -:--:--(py312)
>
>
> I couldn't kill python3.12 with any signal using Cygwin kill. However, I
> was able to end process with Windows Task Manager.
>
> Trying again and doing an strace, it seemed to get stuck in a loop on this:
>
> --- Process 29448 (pid: 4552), exception c0000005 at 0000000000000000
>
> It is using 100% of 1 core while doing that.
>
> I could be wrong, but it looks like there might still be a hanging problem
> with 3.12 on Cygwin.
>
>
> On 1/2/2025 12:42 PM, Michael Cook wrote:
> > As a workaround, you can try passing `--without-pip`.
> > I had success with this:
> >
> >     python -m venv --system-site-packages --without-pip _venv
> >
> >
> > Michael
> >
> > On Thu, Jan 2, 2025 at 11:38 AM Robert Terzi via Cygwin <
> cygwin AT cygwin DOT com> wrote:
> >
> >     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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Date:	Thu, 2 Jan 2025 13:28:43 -0500
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Subject:	Re: Test: python312-3.12.8-1 venv fails due to pip wheel?
To:	Robert Terzi <rct AT r-t DOT org>
Cc:	cygwin AT cygwin DOT com
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From:	Michael Cook via Cygwin <cygwin AT cygwin DOT com>
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