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Subject:	Re: Two computers running cygwin; on one python venv sets up fine and
	on the other an error
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From:	Soren via Cygwin <cygwin AT cygwin DOT com>
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Greetings and thanks Harald. My replication of your steps resulted in a
traceback.
On Wed, Jul 1, 2026 at 10:53 AM Harald Köhler via Cygwin <cygwin AT cygwin DOT com>
wrote:

>
> the error message seems similar to thread "python3.12 ensurepip fails"
> from 2026-02-07 and later. The fix was a workaround in
> python{3.9,3.12}-virtualenv.
>
> You may check if python312-virtualenv-20.36.1-1 is installed. Then
> something like (from my machine):
>
>     $ python3.12 -m ensurepip
>     Looking in links: /tmp/tmprfwr8cps
>     Requirement already satisfied: pip in
> /usr/lib/python3.12/site-packages (26.0.1)
>

My result:
$ python3.12 -m ensurepip
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/usr/lib/python3.12/ensurepip/__main__.py", line 5, in <module>
    sys.exit(ensurepip._main())
             ^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/ensurepip/__init__.py", line 284, in _main
    return _bootstrap(
           ^^^^^^^^^^^
  File "/usr/lib/python3.12/ensurepip/__init__.py", line 176, in _bootstrap
    whl = wheel_path.read_bytes()
          ^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/pathlib.py", line 1019, in read_bytes
    with self.open(mode='rb') as f:
         ^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/pathlib.py", line 1013, in open
    return io.open(self, mode, buffering, encoding, errors, newline)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory:
'/usr/lib/python3.12/ensurepip/_bundled/pip-25.0.1-py3-none-any.whl'

Danke, Harald. If you have any further ideas to share with me, please do so.

  Sincerely,
    Soren

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