Pip: `pip install` ignores `--force-reinstall`

[remcohaszing]

• Pip version: 9.0.1
• Python version: 3.6.0
• Operating system: Reproduced on both Ubuntu 17.04 and OS X.

Description:

I tried to force reinstall a package, but pip states that the requirement is already satisfied, as is --force-reinstall isn't passed at all.

What I've run:

$ pip3 install --force-reinstall virtualenv
Requirement already satisfied: virtualenv in /usr/local/lib/python3.6/site-packages

[piotr-dobrogost]

The first google result for pip force-reinstall is SO question Can I force pip to reinstall the current version? with solution.

[remcohaszing]

So I should've used --ignore-installed. I just assumed this was a bug based on the --force-reinstall description.