From e4ab19caa7979f2ecedf223fac6a6dee69c25986 Mon Sep 17 00:00:00 2001
From: Hanno Schlichting <hanno@hannosch.eu>
Date: Thu, 16 Jul 2009 18:44:54 +0200
Subject: Allow to find_on_path on systems with tight permissions to fail
 gracefully. This closes #9.

--HG--
branch : distribute
extra : rebase_source : ff1f9a886a4524e59ea14f4063bf9074d0568082
---
 pkg_resources.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkg_resources.py b/pkg_resources.py
index 87072b4d..ea01817b 100644
--- a/pkg_resources.py
+++ b/pkg_resources.py
@@ -1649,7 +1649,7 @@ def find_on_path(importer, path_item, only=False):
     """Yield distributions accessible on a sys.path directory"""
     path_item = _normalize_cached(path_item)
 
-    if os.path.isdir(path_item):
+    if os.path.isdir(path_item) and os.access(path_item, os.R_OK):
         if path_item.lower().endswith('.egg'):
             # unpacked egg
             yield Distribution.from_filename(
-- 
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