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"pip uninstall" stuck for long if no "-v" is given for some package

See original GitHub issue

Description

When uninstalling smashpy, pip stuck for long in listing the file to delete (and keep). WIth -v this stuck does not happen.

IMO, the function compress_for_output_listing has some problem with this package:

https://github.com/pypa/pip/blob/bef589d8cbaa74264c2cbffc839dda0917e2c7cb/src/pip/_internal/req/req_uninstall.py#L427-L428

Expected behavior

pip uninstall is generally expected to respond more quickly without -v than with it.

pip version

21.1.3

Python version

3.9.6

OS

Arch Linux

How to Reproduce

pip install smashpy
pip uninstall smashpy
- pip displays the uninstall information slowly
pip uninstall smashpy -v
- pip displays the uninstall information quickly

Output

$ pip uninstall smashpy
Found existing installation: smashpy 0.0.8
Uninstalling smashpy-0.0.8:
  Would remove:
    /tmp/venv/lib/python3.9/site-packages/*
  Would not remove (might be manually added):
    /tmp/venv/lib/python3.9/site-packages/Keras-2.4.3.dist-info/INSTALLER
    /tmp/venv/lib/python3.9/site-packages/Keras-2.4.3.dist-info/LICENSE
    /tmp/venv/lib/python3.9/site-packages/Keras-2.4.3.dist-info/METADATA
    /tmp/venv/lib/python3.9/site-packages/Keras-2.4.3.dist-info/RECORD
    (thousands of lines omitted)

$ pip uninstall smashpy -v
Found existing installation: smashpy 0.0.8
Uninstalling smashpy-0.0.8:
  Would remove:
    /tmp/venv/lib/python3.9/site-packages/__init__.py
    /tmp/venv/lib/python3.9/site-packages/__pycache__/__init__.cpython-39.pyc
    /tmp/venv/lib/python3.9/site-packages/__pycache__/_version.cpython-39.pyc
    /tmp/venv/lib/python3.9/site-packages/__pycache__/pySMaSH.cpython-39.pyc
    /tmp/venv/lib/python3.9/site-packages/__pycache__/smashpy.cpython-39.pyc
    /tmp/venv/lib/python3.9/site-packages/_version.py
    /tmp/venv/lib/python3.9/site-packages/pySMaSH.py
    /tmp/venv/lib/python3.9/site-packages/smashpy-0.0.8.dist-info/INSTALLER
    /tmp/venv/lib/python3.9/site-packages/smashpy-0.0.8.dist-info/LICENSE
    /tmp/venv/lib/python3.9/site-packages/smashpy-0.0.8.dist-info/METADATA
    /tmp/venv/lib/python3.9/site-packages/smashpy-0.0.8.dist-info/RECORD
    /tmp/venv/lib/python3.9/site-packages/smashpy-0.0.8.dist-info/REQUESTED
    /tmp/venv/lib/python3.9/site-packages/smashpy-0.0.8.dist-info/WHEEL
    /tmp/venv/lib/python3.9/site-packages/smashpy-0.0.8.dist-info/top_level.txt
    /tmp/venv/lib/python3.9/site-packages/smashpy.py
  Will actually move:
    /tmp/venv/lib/python3.9/site-packages/__init__.py
    /tmp/venv/lib/python3.9/site-packages/__pycache__/__init__.cpython-39.pyc
    /tmp/venv/lib/python3.9/site-packages/__pycache__/_version.cpython-39.pyc
    /tmp/venv/lib/python3.9/site-packages/__pycache__/pySMaSH.cpython-39.pyc
    /tmp/venv/lib/python3.9/site-packages/__pycache__/smashpy.cpython-39.pyc
    /tmp/venv/lib/python3.9/site-packages/_version.py
    /tmp/venv/lib/python3.9/site-packages/pySMaSH.py
    /tmp/venv/lib/python3.9/site-packages/smashpy-0.0.8.dist-info/
    /tmp/venv/lib/python3.9/site-packages/smashpy.py

Code of Conduct

I agree to follow the PSF Code of Conduct.

Issue Analytics

State:
Created 2 years ago
Comments:15 (12 by maintainers)

Top GitHub Comments

1reaction

pfmoorecommented, Jul 20, 2021

This looks like a bug in the packaging of smashpy - it’s installing files (including an __init__.py entry) direct into site-packages, and that’s somehow making pip think it needs to remove all of the site-packages directory!

Pip should probably protect better against badly packaged projects like this, but smashpy needs fixing as well…

0reactions

outloudvicommented, Jul 21, 2021

Got it. Thanks for your detailed explanation! ❤️

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