--- calibre/setup/install.py.orig	2013-09-21 13:01:38.006926552 +0200
+++ calibre/setup/install.py	2013-09-21 13:30:29.042536094 +0200
@@ -130,7 +130,6 @@ class Develop(Command):
         self.write_templates()
         self.install_files()
         self.run_postinstall()
-        self.install_env_module()
         self.success()
 
     def install_env_module(self):