diff -up ./setup.py.orig ./setup.py
--- ./setup.py.orig	2017-07-02 22:17:54.301963250 +0200
+++ ./setup.py	2017-07-02 22:35:20.420699087 +0200
@@ -472,7 +472,6 @@ setup(
       "Operating System :: Unix",
     ],
     zip_safe = False,
-    setup_requires=['setuptools_git'],
     tests_require=['pytest', 'unittest2'],
     ext_modules = ext_modules(),