Build fails with:

  "The package setup script has attempted to modify files on your system
   that are not within the EasyInstall build area, and has been aborted."

without this patch.

This change will not be sent upstream.

--- mccabe-0.5.2/setup.py.orig	2016-09-29 11:04:22.409951942 +0000
+++ mccabe-0.5.2/setup.py	2016-09-29 11:04:14.248108118 +0000
@@ -33,7 +33,6 @@
     license='Expat license',
     py_modules=['mccabe'],
     zip_safe=False,
-    setup_requires=['pytest-runner'],
     tests_require=['pytest'],
     entry_points={
         'flake8.extension': [