setup.py

import setuptools
import platform

if platform.python_implementation() == 'PyPy':
    options = {'py_modules': ['numa']}
else:
    try:
        from Cython.Distutils import build_ext

        source_file = "numa.pyx"
        cython_available = True
    except ImportError:
        source_file = "numa.c"
        cython_available = False

    options = {'ext_modules': [
                setuptools.Extension("numa",
                          [source_file],
                          libraries=["numa"],
                          define_macros=[('NUMA_VERSION1_COMPATIBILITY', 1)],
                          )
                    ]
               }

    if cython_available:
        options['cmdclass'] = {"build_ext": build_ext}

setuptools.setup(
    name="numa",
    version='1.4.6',
    description="Interface to numa(3) Linux API for Python",
    author='Andrey Smirnov',
    author_email='me@smira.ru',
    url='http://github.com/smira/py-numa',
    long_description='''
        numa provides interface to numa(3) Linux APIs (version 1/2).

        It allows to query NUMA state, change memory & scheduling policies.

        Supports PyPy (via ctypes) and CPython (via Cython).
        ''',
    license='MIT',
    platforms=['any'],
    classifiers=[
        'Development Status :: 3 - Alpha',
        'License :: OSI Approved :: MIT License',
        'Operating System :: POSIX :: Linux',
            ],
    **options
)