[CentOS] Semi-OT: install python package in userspace

CentOS 7 box. As there's no package in any of the repos, we're trying to
install scikit-learn in the user's space. It refuses. My late try was,
after d/l a .whl from last year, hoping that would work with the numpy
package in the regular repos, I did a pip install --user scikit-learn...,
and it still seems to want to write to system space: OSError: [Errno 13]
Permission denied:
'/usr/lib64/python2.7/site-packages/numpy-1.7.1.dist-info

Anyone got any pointers?

       mark