pip trouble

[Neal Becker]

I have a custom-compiled numpy 1.10.0.  But as you see, pip wants to install 
a new numpy, even though the requirement (numpy>=1.6) was already satisfied.  
WTF?

All are installed into --user.

This is on fedora 22 linux. 

pip install --up --user matplotlib
Collecting matplotlib
  Using cached matplotlib-1.5.0.tar.gz
Collecting numpy>=1.6 (from matplotlib)
  Using cached numpy-1.10.1.tar.gz
Requirement already up-to-date: python-dateutil in 
./.local/lib/python2.7/site-packages (from matplotlib)
Collecting pytz (from matplotlib)
  Using cached pytz-2015.7-py2.py3-none-any.whl
Collecting cycler (from matplotlib)
  Using cached cycler-0.9.0-py2.py3-none-any.whl
Collecting pyparsing!=2.0.4,>=1.5.6 (from matplotlib)
  Using cached pyparsing-2.0.5-py2.py3-none-any.whl
Collecting six>=1.5 (from python-dateutil->matplotlib)
  Using cached six-1.10.0-py2.py3-none-any.whl
Installing collected packages: numpy, pytz, six, cycler, pyparsing, 
matplotlib
  Found existing installation: numpy 1.10.0
    DEPRECATION: Uninstalling a distutils installed project (numpy) has been 
deprecated and will be removed in a future version. This is due to the fact 
that uninstalling a distutils project will only partially uninstall the 
project.
    Uninstalling numpy-1.10.0:
      Successfully uninstalled numpy-1.10.0
  Running setup.py install for numpy