pip install kwant

Since this version, the new ones point to /usr/... instead /usr/local/... to find numpy libraries:

kwant/_system.c:255:10: fatal error: 'numpy/arrayobject.h' file not found
#include "numpy/arrayobject.h"

and the installation fails. The correct path is of the form:

/usr/local/lib/python2.7/site-packages/numpy/core/include/numpy/

etc.

Best wishes,

Alberto Verga

Université d'Aix-Marseille

Campus St Jérôme, service 142

13397 Marseille cedex 20, France