old_contents: from distutils.core import setup
  from distutils.extension import Extension
  from Cython.Distutils import build_ext, install
  import numpy
  from Cython.Build import cythonize
  
  setup(
      name='choldate',
      version='0.1.0',
      py_modules=['choldate.test'],
      cmdclass = {'build_ext': build_ext,'install': install},
      ext_modules = cythonize([Extension("choldate", ["choldate/choldate.pyx"],include_dirs = [numpy.get_include()])
      ]), requires=['numpy']
  
  )
  
new_contents: from distutils.core import setup
  from distutils.extension import Extension
  from Cython.Distutils import build_ext
  import numpy
  from Cython.Build import cythonize
  
  setup(
      name='choldate',
      version='0.1.0',
      py_modules=['choldate.test'],
      cmdclass = {'build_ext': build_ext},
      ext_modules = cythonize([Extension("choldate", ["choldate/choldate.pyx"],include_dirs = [numpy.get_include()])
      ]), requires=['numpy']
  
  )
  
subject: undo that last change