• Pip version: 9.0.1
• Python version: 3.6
• Operating system: Linux

Description:

I went to the documentation here:

https://pip.pypa.io/en/latest/reference/pip_install/#vcs-support

And hg+file was not listed as a supported URL scheme. I ran pip install with that URL scheme anyway, and it worked fine. The documentation was missing it.

What I've run:

pip install --prefix="$PWD/venv" -e hg+file:///someplace/on/my/system/curio#egg=curio
Obtaining curio from hg+file:///someplace/on/my/system/curio#egg=curio
Updating ./venv/src/curio clone
Installing collected packages: curio
Running setup.py develop for curio
Successfully installed curio