ubuntu 14.04, pip cannot upgrade matplotllib

Question

When I try to upgrade my matplotlib using pip, it outputs:

Downloading/unpacking matplotlib from https://pypi.python         


        

Answer 1

This is a known bug that has been fixed (https://github.com/matplotlib/matplotlib/pull/3414) on master.

The bug is in the handling of searching for a freetype installation. If you install the Linux package freetype-dev, you will avoid this bug and be able to compile matplotlib.

sudo apt-get install libfreetype6-dev