When using matplotlib griddata() on python3, an error results since the default interpolation is "nn" and needs natgrid. Simply adding 3_3,3_4 to PYTHON_COMPAT in the ebuild fixes it. Thanks! Reproducible: Always
+ 03 Jul 2015; Justin Lecher <jlec@gentoo.org> -natgrid-0.2.1-r1.ebuild, + natgrid-0.2.1-r2.ebuild: + Add py3 support, bug #524750 +