diff --git a/MANIFEST.in b/MANIFEST.in
index a07ec37b6..0e2182e44 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,3 +1,4 @@
 include tox.ini
 include requirements/*.txt
-include default.cfg
\ No newline at end of file
+include default.cfg
+include requirements/constraints.txt
diff --git a/setup.py b/setup.py
old mode 100755
new mode 100644
index c6588a58f..19619a07e
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,8 @@
 #!/usr/bin/env python
 
+import os
+import re
+
 from setuptools import setup
 
 setup(