At least managing multiple files is a pain.

I've had to resort to

    $ vimdiff <(pip freeze) requirements/prod.txt

You can't just do "pip freeze > requirements.txt" like you see on every tutorial. I wish there was a better way to do this.

And I would also like to only display without dependencies. Say I "pip install X", which depends on Y and Z as well. Then later I want to delete X, so I just "pip uninstall X", but I will still have Y and Z.