Index: src/zc/buildout/easy_install.py
===================================================================
--- src/zc/buildout/easy_install.py	(revision 113087)
+++ src/zc/buildout/easy_install.py	(working copy)
@@ -31,6 +31,7 @@
 import setuptools.package_index
 import shutil
 import subprocess
+import stat
 import sys
 import tempfile
 import zc.buildout
@@ -1377,7 +1378,8 @@
     if changed:
         open(script_name, 'w').write(contents)
         try:
-            os.chmod(script_name, 0755)
+            exec_mask = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
+            os.chmod(script_name, os.stat(script_name).st_mode | exec_mask)
         except (AttributeError, os.error):
             pass
         logger.info("Generated %s %r.", logged_type, full_name)