setup.py

from setuptools import setup, find_packages, Extension
import numpy, sys
import re

USE_C_KEPLER_MODULE = 1
if "--disable-cython" in sys.argv:
    sys.argv.remove("--disable-cython")
    USE_C_KEPLER_MODULE = 0
else:
    try:
        from Cython.Build import cythonize
    except:
        print("Error: Importing cython build environment failed")
        USE_C_KEPLER_MODULE = 0


# auto-updating version code stolen from RadVel
def get_property(prop, project):
    result = re.search(
        r'{}\s*=\s*[\'"]([^\'"]*)[\'"]'.format(prop),
        open(project + "/__init__.py").read(),
    )
    return result.group(1)


def get_requires():
    reqs = []
    for line in open("requirements.txt", "r").readlines():
        reqs.append(line)
    return reqs


def get_extensions():
    extensions = []
    if USE_C_KEPLER_MODULE:
        extensions = cythonize(
            [
                Extension(
                    "orbitize._kepler",
                    ["orbitize/_kepler.pyx"],
                    include_dirs=[numpy.get_include()],
                )
            ]
        )
    return extensions


setup(
    name="orbitize",
    version=get_property("__version__", "orbitize"),
    description="orbitize! Turns imaging data into orbits",
    url="https://github.com/sblunt/orbitize",
    author="",
    author_email="",
    license="BSD",
    packages=find_packages(),
    package_data={"": ["kernels/*.cu"]},
    ext_modules=get_extensions(),
    include_dirs=[numpy.get_include()],
    include_package_data=True,
    zip_safe=False,
    classifiers=[
        "Intended Audience :: Science/Research",
        "Topic :: Scientific/Engineering :: Astronomy",
        "License :: OSI Approved :: BSD License",
        "Programming Language :: Python :: 3.6",
    ],
    keywords="Orbits Astronomy Astrometry",
    install_requires=get_requires(),
)