Pipenv uninstall doesn't uninstall dependencies

When I run pipenv uninstall, I am counting on uninstalling the package with all it’s dependencies that are not shared with other packages.

Maybe having this behaviour by default is too aggressive, but having at least a flag would be awesome.

Describe your environment

1. OS Type: Linux
2. Python version: $ python -V Python 3.6.4
3. Pipenv version: $ pipenv --version pipenv, version 9.0.3

Expected result

I would expect pipenv to uninstall all dependencies of distex (dill, cloudpickle).

Actual result

(mos-bot-NUxJbKoW) javier@sam> pipenv install distex
Installing distex…
Collecting distex
  Downloading distex-0.5.6-py3-none-any.whl
Collecting dill (from distex)
  Downloading dill-0.2.7.1.tar.gz (64kB)
Collecting cloudpickle (from distex)
  Downloading cloudpickle-0.5.2-py2.py3-none-any.whl
Building wheels for collected packages: dill
  Running setup.py bdist_wheel for dill: started
  Running setup.py bdist_wheel for dill: finished with status 'done'
  Stored in directory: /.../.cache/pip/wheels/e5/88/fe/7e290ce5bb39d531eb9bee5cf254ba1c3e3c7ba3339ce67bee
Successfully built dill
Installing collected packages: dill, cloudpickle, distex
Successfully installed cloudpickle-0.5.2 dill-0.2.7.1 distex-0.5.6

Adding distex to Pipfile's [packages]…
Locking [dev-packages] dependencies…
Locking [packages] dependencies…
Updated Pipfile.lock (8bce4b)!

(mos-bot-NUxJbKoW) javier@sam > pipenv uninstall distex
Un-installing distex…
Uninstalling distex-0.5.6:
  Successfully uninstalled distex-0.5.6

Removing distex from Pipfile…
Locking [dev-packages] dependencies…
Locking [packages] dependencies…
Updated Pipfile.lock (154010)!

Steps to replicate

pipenv install distex
pipenv uninstall distex

Here all 3 packages should be deleted

[uranusjr]

Pipenv uses pip underneath to install/uninstall packages, and is therefore not able to do well here because pip does not have a dependency resolver, and has no way to know whether a dependency is no longer needed. Pipenv, therefore, cannot do this at the moment.

It is technically possible to implement a pipenv clean command, that functions similar to apt autoremove. The command would compare the current environment to the lock file, and remove all packages not in it. I’m not sure if anyone is interested in implementing this, or if it would be accepted (although I’m personally +1 to this).

[il6]

pipenv --rm
pipenv install

This process will work but very slow as it delete the full virtual environment and reinstall all the main dependencies.