1 files changed, 6 insertions, 1 deletions
diff --git a/setuptools/sandbox.py b/setuptools/sandbox.py
index 185f2573..1d23ba98 100755
--- a/setuptools/sandbox.py
+++ b/setuptools/sandbox.py
@@ -30,7 +30,12 @@ def _execfile(filename, globals, locals=None):
     """
     Python 3 implementation of execfile.
     """
-    with open(filename, 'rb') as stream:
+    mode = 'rb'
+    # Python 2.6 compile requires LF for newlines, so use deprecated
+    #  Universal newlines support.
+    if sys.version_info < (2, 7):
+        mode += 'U'
+    with open(filename, mode) as stream:
         script = stream.read()
     if locals is None:
         locals = globals