Since I needed the python-matplotlib package for GRASS GIS 7/EPEL, I create a package at

python-matplotlib package for EPEL7
https://copr.fedorainfracloud.org/coprs/neteler/python-matplotlib/

Source: http://koji.fedoraproject.org/koji/packageinfo?packageID=3607 (with this change in SPEC file: "global with_html 0" rather than 1):



Built Packages:
    python2-matplotlib 1.4.3
    python2-matplotlib-doc 1.4.3
    python2-matplotlib-gtk 1.4.3
    python2-matplotlib-gtk3 1.4.3
    python2-matplotlib-qt4 1.4.3
    python2-matplotlib-tk 1.4.3
    python-matplotlib-data 1.4.3
    python-matplotlib-data-fonts 1.4.3
    python-matplotlib-debuginfo 1.4.3

My package lacks however the wx backend for matplotlib, see also bug #1309744.
But at least I am able to build GRASS GIS 7 on EPEL7.