python3.12 ensurepip fails

[Marco Atzeri]

On 08/02/2026 18:08, news703538--- via Cygwin wrote:
> Am 2026-02-07 18:44:36, schrieb Libor Ukropec via Cygwin:
>> Hello,
>>
>> I've installed (and then reinstalled) Python312 (3.12.12-1), venv, pip,
>> setuptools, wheel all for python312.
>>
>> Still when I execute `python3.12 -m ensurepip` I have this error:
>>
>> ```bash
>> $ python3.12 -m ensurepip
>> Traceback (most recent call last):
>>    File "<frozen runpy>", line 198, in _run_module_as_main
...
>> FileNotFoundError: [Errno 2] No such file or directory:
>> '/usr/lib/python3.12/ensurepip/_bundled/pip-25.0.1-py3-none-any.whl'

python on Cygwin was always built without ensurepip
so no surprise that is not working.

I don't know why this setting was used before I took over.
I am checking now to build with ensurepip


>> ```
> ...
>> I'm not asking for workaround(s), I'm asking if it is an error in cygwin or
>> my setup. I hit this error during troubleshooting other error.
>>
>> Regards,
>> Libor
> 
> Hello,
> 
> I had exactly the same problem here and gave up recently. Looking again
> into this I found the missing file in package python312-virtualenv via
> "cygcheck -p pip-25.0.1-py3-none-any.whl".
> 
> After installing the package python312-virtualenv, the missing file is
> not at the expected location.
> 
> So with a new directory /usr/lib/python3.12/ensurepip/_bundled/ and a symbolic link
> /usr/lib/python3.12/ensurepip/_bundled/pip-25.0.1-py3-none-any.whl -> /usr/lib/python3.12/site-packages/virtualenv/seed/wheels/embed/pip-25.0.1-py3-none-any.whl
> "python3.12 -m ensurepip" worked for me.
> 

thanks for the checking, I will look on it.


> I'm aware you are not asking for a workaround, so concerning your question I
> guess this is a glitch in a cygwin package or maybe upstream.
> 
> Finally I am considering my cygwin transition from python3.9 to python3.12
> because "python3.12 -m venv venv" also succeeds now.
> 
> Regards,
> Harald
> 

Regards
Marco