--- quantum-2012.2/quantum/__init__.py.orig	2012-09-25 21:44:21.000000000 +0200
+++ quantum-2012.2/quantum/__init__.py	2012-10-23 15:11:27.629591625 +0200
@@ -15,6 +15,36 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import sys
+import pkg_resources
+
+# If there is a conflicting non egg module,
+# i.e. an older standard system module installed,
+# then replace it with this requirement
+def replace_dist(requirement):
+    try:
+        return pkg_resources.require(requirement)
+    except pkg_resources.VersionConflict:
+        e = sys.exc_info()[1]
+        dist=e.args[0]
+        req=e.args[1]
+        if dist.key == req.key and not dist.location.endswith('.egg'):
+            del pkg_resources.working_set.by_key[dist.key]
+            # We assume there is no need to adjust sys.path
+            # and the associated pkg_resources.working_set.entries
+            return pkg_resources.require(requirement)
+
+replace_dist("WebOb >= 1.0")
+replace_dist("SQLAlchemy >= 0.6.3")
+replace_dist("Routes >= 1.12.3")
+
+replace_dist("PasteDeploy >= 1.5.0")
+# This hack is needed because replace_dist() results in
+# the standard paste module path being at the start of __path__.
+# TODO: See can we get pkg_resources to do the right thing directly
+import paste
+paste.__path__.insert(0, paste.__path__.pop(-1))
+
 import gettext