--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/venv/lib/python2.7/site-packages/pip/req/req_requirement.py	Mon Oct 12 17:43:33 2015 -0400
@@ -0,0 +1,43 @@
+from pip._vendor.packaging.version import parse as parse_version
+
+
+class InstallationCandidate(object):
+
+    def __init__(self, project, version, location):
+        self.project = project
+        self.version = parse_version(version)
+        self.location = location
+        self._key = (self.project, self.version, self.location)
+
+    def __repr__(self):
+        return "<InstallationCandidate({0!r}, {1!r}, {2!r})>".format(
+            self.project, self.version, self.location,
+        )
+
+    def __hash__(self):
+        return hash(self._key)
+
+    def __lt__(self, other):
+
+        return self._compare(other, lambda s, o: s < o)
+
+    def __le__(self, other):
+        return self._compare(other, lambda s, o: s <= o)
+
+    def __eq__(self, other):
+        return self._compare(other, lambda s, o: s == o)
+
+    def __ge__(self, other):
+        return self._compare(other, lambda s, o: s >= o)
+
+    def __gt__(self, other):
+        return self._compare(other, lambda s, o: s > o)
+
+    def __ne__(self, other):
+        return self._compare(other, lambda s, o: s != o)
+
+    def _compare(self, other, method):
+        if not isinstance(other, InstallationCandidate):
+            return NotImplemented
+
+        return method(self._key, other._key)