--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/venv/lib/python2.7/site-packages/pip/utils/build.py	Mon Oct 12 17:43:33 2015 -0400
@@ -0,0 +1,42 @@
+from __future__ import absolute_import
+
+import os.path
+import tempfile
+
+from pip.utils import rmtree
+
+
+class BuildDirectory(object):
+
+    def __init__(self, name=None, delete=None):
+        # If we were not given an explicit directory, and we were not given an
+        # explicit delete option, then we'll default to deleting.
+        if name is None and delete is None:
+            delete = True
+
+        if name is None:
+            # We realpath here because some systems have their default tmpdir
+            # symlinked to another directory.  This tends to confuse build
+            # scripts, so we canonicalize the path by traversing potential
+            # symlinks here.
+            name = os.path.realpath(tempfile.mkdtemp(prefix="pip-build-"))
+            # If we were not given an explicit directory, and we were not given
+            # an explicit delete option, then we'll default to deleting.
+            if delete is None:
+                delete = True
+
+        self.name = name
+        self.delete = delete
+
+    def __repr__(self):
+        return "<{} {!r}>".format(self.__class__.__name__, self.name)
+
+    def __enter__(self):
+        return self.name
+
+    def __exit__(self, exc, value, tb):
+        self.cleanup()
+
+    def cleanup(self):
+        if self.delete:
+            rmtree(self.name)