$ pip -V
pip 18.1 from /home/xfernandez/.virtualenvs/tmp-13c0d8450eb8175/lib/python3.7/site-packages/pip (python 3.7)
$ pip install mccabe --no-index -v
Ignoring indexes: https://user:supers3cret@pypi.example.com/root/ci/+simple/
Created temporary directory: /tmp/pip-ephem-wheel-cache-lcf7j0sa
Created temporary directory: /tmp/pip-req-tracker-mqzoa99d
Created requirements tracker '/tmp/pip-req-tracker-mqzoa99d'
Created temporary directory: /tmp/pip-install-_ecz3ykx
Requirement already satisfied: mccabe in ./lib/python3.7/site-packages (0.6.1)
Cleaning up...
Removed build tracker '/tmp/pip-req-tracker-mqzoa99d'