Fixes the original root cause of #231, and re-enables the test when the tempdir is a symlink (this does not explicitly test that /tmp itself is a symlink, but the effect is the same--only one of the path levels needs to be a symlink to reproduce this isssue)

1 files changed, 7 insertions, 2 deletions

diff --git a/pkg_resources/__init__.py b/pkg_resources/__init__.py
index 7becc951..7d2fa7e9 100644
--- a/pkg_resources/__init__.py
+++ b/pkg_resources/__init__.py
@@ -2182,9 +2182,14 @@ def _handle_ns(packageName, path_item):
         path = module.__path__
         path.append(subpath)
         loader.load_module(packageName)
+
+        # Ensure that all paths on __path__ have been run through
+        # normalize_path
+        normalized_paths = set(_normalize_cached(p) for p in module.__path__)
         for path_item in path:
-            if path_item not in module.__path__:
-                module.__path__.append(path_item)
+            normalized = _normalize_cached(path_item)
+            if normalized not in normalized_paths:
+                module.__path__.append(normalized)
     return subpath
 
 def declare_namespace(packageName):