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-rw-r--r--CHANGES.rst6
-rwxr-xr-xsetuptools/command/install_egg_info.py3
2 files changed, 8 insertions, 1 deletions
diff --git a/CHANGES.rst b/CHANGES.rst
index 7c4ff813..c536a7be 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,12 @@
CHANGES
=======
+v28.1.0
+-------
+
+* #805: Disable ``-nspkg.pth`` behavior on Python 3.3+ where
+ PEP-420 functionality is adequate. Fixes pip #1924.
+
v28.0.0
-------
diff --git a/setuptools/command/install_egg_info.py b/setuptools/command/install_egg_info.py
index 60b615d2..7834e107 100755
--- a/setuptools/command/install_egg_info.py
+++ b/setuptools/command/install_egg_info.py
@@ -82,9 +82,10 @@ class install_egg_info(Command):
_nspkg_tmpl = (
"import sys, types, os",
+ "pep420 = sys.version_info > (3, 3)",
"p = os.path.join(sys._getframe(1).f_locals['sitedir'], *%(pth)r)",
"ie = os.path.exists(os.path.join(p,'__init__.py'))",
- "m = not ie and "
+ "m = not ie and not pep420 and "
"sys.modules.setdefault(%(pkg)r, types.ModuleType(%(pkg)r))",
"mp = (m or []) and m.__dict__.setdefault('__path__',[])",
"(p not in mp) and mp.append(p)",