$OpenBSD: patch-setup_py,v 1.2 2016/09/17 15:33:39 danj Exp $

1. For option --single-version-externally-managed
2. Disable cython

--- setup.py.orig	Thu Aug 25 20:17:54 2016
+++ setup.py	Sun Aug 28 10:12:56 2016
@@ -1,7 +1,7 @@
 import os
 import sys
 import warnings
-from distutils.core import setup
+from setuptools import setup
 from distutils.extension import Extension
 from distutils.version import StrictVersion
 
@@ -28,7 +28,7 @@ else:
                       'C extensions, install Cython >=' + cython_min_version +
                       '.')
     else:
-        cython_installed = True
+        cython_installed = False
 
 speedups_ext_module = Extension(
     'playhouse._speedups',
