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ModuleNotFoundError virtualenv.activation.nushell since 20.8.0

See original GitHub issue

Issue

expected: poetry install successfully creates virtual env

observed:

fails with today’s new release 20.8.0
works if I run pip3 install 'virtualenv==20.7.2' --force-reinstall first

Environment

Provide at least:

OS: alpine linux 3.12

Output of the virtual environment creation

(running in docker using alpine 3.12)

RUN poetry install --no-root --no-dev
Creating virtualenv in ...

  ModuleNotFoundError

  No module named 'virtualenv.activation.nushell'

  at <frozen importlib._bootstrap>:984 in _find_and_load_unlocked

I may be mistaken (not really a python expert), but I believe this commit/line is the culprit that broke things:

https://github.com/pypa/virtualenv/commit/e0410cafc8feedf72562174dee983fc709a5a36e#diff-fa602a8a75dc9dcc92261bac5f533c2a85e34fcceaff63b3a3a81d9acde2fc52R112

Issue Analytics

State:
Created 2 years ago
Comments:6 (3 by maintainers)

Top GitHub Comments

1reaction

StephanHCBcommented, Sep 17, 2021

RUN pip3 install tox --ignore-installed

This line seems dangerous, as it will drop newer versions of libraries (including virtualenv) over the top of existing versions, which potentially leaves a “mix” of old and new code.

Why do you do --ignore-installed rather than a simple install (or if absolutely necessary, a --force-reinstall)?

I actually don’t remember why I added that. I have now removed it and it didn’t change the behavior. Thank you for the tip.

I think I have found the problem, though - @gaborbernat was right - my container was still using poetry 1.1.7 instead of 1.1.8. With poetry 1.1.8, it works without the virtualenv downgrade.

Sorry about the confusion and thank you all for your help. Closing this.

SOLUTION TL/DR: ensure you’re on the latest poetry version!

0reactions

gaborbernatcommented, Dec 26, 2021

This seems like a failed installation on debian 👍