I tried installing it via pip on CentOS 6.6, and I get:

Traceback (most recent call last): File "/usr/bin/mycli", line 5, in <module> from pkg_resources import load_entry_point File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 2655, in <module> working_set.require(__requires__) File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 648, in require needed = self.resolve(parse_requirements(requirements)) File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 546, in resolve raise DistributionNotFound(req) pkg_resources.DistributionNotFound: six>=1.8

Am I missing something obvious?