from setuptools import setup, Extension from Cython.Distutils import build_ext from numpy.distutils.misc_util import get_numpy_include_dirs # Sources sources = ["my_extension/example_ext.pyx"] setup( name="my_package", description='My description', license='MY_LICENSE', ext_modules=[ Extension( "my_extension.example_ext", sources=sources, ), ], cmdclass={"build_ext": build_ext}, packages=['my_extension'], )