Missing requirements `six`
When building Sakia, get this error :
import six
ImportError: No module named 'six'
----------------------------------------
Command "/home/benoit/.pyenv/versions/3.5.3/bin/python3.5 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-82logda6/pyyaml/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-5q5k1fkr-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-82logda6/pyyaml/
\\\
Workaround :
> pip install six