diff -Naur ceilometer-2013.1.g3.orig/ceilometer/__init__.py ceilometer-2013.1.g3/ceilometer/__init__.py
--- ceilometer-2013.1.g3.orig/ceilometer/__init__.py	2013-04-08 09:54:04.545469160 +0000
+++ ceilometer-2013.1.g3/ceilometer/__init__.py	2013-04-08 10:01:12.306302227 +0000
@@ -14,6 +14,28 @@
 # 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 >= 1.2")
+replace_dist("SQLAlchemy >= 0.7.3")
+
 import gettext
 
 gettext.install('ceilometer', unicode=1)
diff -Naur ceilometer-2013.1.g3.orig/ceilometer/storage/sqlalchemy/migration.py ceilometer-2013.1.g3/ceilometer/storage/sqlalchemy/migration.py
--- ceilometer-2013.1.g3.orig/ceilometer/storage/sqlalchemy/migration.py	2013-04-08 09:54:04.608469135 +0000
+++ ceilometer-2013.1.g3/ceilometer/storage/sqlalchemy/migration.py	2013-04-08 10:06:21.515180041 +0000
@@ -52,7 +52,13 @@
 
 
 # NOTE(jkoelker) Delay importing migrate until we are patched
-from migrate import exceptions as versioning_exceptions
+try:
+    # Try the more specific path first (migrate <= 0.6)
+    from migrate.versioning import exceptions as versioning_exceptions
+except ImportError:
+    # Use the newer path (migrate >= 0.7)
+    from migrate import exceptions as versioning_exceptions
+
 from migrate.versioning import api as versioning_api
 from migrate.versioning.repository import Repository