pip install -e --user is not resolved

[12rambau]

Description

A packages installed with pip install --user -e is then not resolved from python when importing it in a python script. I reported this issue first in jupyterlab/jupyterlab#13867 (comment) but it seems related to the installation process itself.

Expected behavior

I would expect the editable installation from my user directory to have priority on any other

pip version

22.3.1

Python version

3.8.1

OS

Ubuntu focal

How to Reproduce

from my terminal I run:

git clone git@github.com:pydata/numexpr.git
pip install -e --user numexpr

In my local folder, I find the following:

.local/
└── lib/
    └── python3.8/
        └── site-packages/
            ├── numexpr-2.8.5.dev1.dist-info/
            ├── __editable___numexpr_2_8_5_dev1_finder.py
            └── __editable___numexpr_2_8_5_dev1_finder.py

Now from a python interface, I execute the following commands:

import numexpr
numexpr.__version__

which give me 2.7.1 which is not version I installed in editable mode.

But from the terminal, it returns the correct version.

$ pip show numexpr

Version: 2.8.5.dev1

Output

No response

Code of Conduct

• I agree to follow the PSF Code of Conduct.

[uranusjr]

The numexpr project dynamically generates the version file on build with a custom script in seutp.py. pip does not intefere with the code, and you need to discuss with the said project why the mechanism does not work as you expect.

[12rambau]

numexpr was a dummy example, the initial problem was coming from a lib I created myself. Using a more robust lib (like numexpr) was a way to avoid the "you made a mistake in your config issue".

Thanks to another thread (microsoft/pylance-release#78) I finally understand the issue:
setuptools recently added support for PEP660 which seems unsupported by my environment.
running pip install -e . --config-settings editable_mode=compat as suggested in setuptool documentation solved it.