#444: Check pip version in setup.py

requirements.txt

@@ -1,3 +1,4 @@
+pip
 pytest
 mock
 pytest-mock

setup.py

@@ -1,8 +1,14 @@
 #!/usr/bin/env python
 from setuptools import setup, find_packages
+import pip
 import sys
 import os
 
+if int(pip.__version__.split('.')[0]) < 6:
+    print('pip older than 6.0 not supported, please upgrade pip with:\n\n'
+          '    pip install -U pip')
+    sys.exit(-1)
+
 if os.environ.get('CONVERT_README'):
     import pypandoc