diff -Naur ceilometer-2013.2.b1.orig/ceilometer/__init__.py ceilometer-2013.2.b1/ceilometer/__init__.py
--- ceilometer-2013.2.b1.orig/ceilometer/__init__.py	2013-05-30 15:09:28.000000000 +0000
+++ ceilometer-2013.2.b1/ceilometer/__init__.py	2013-05-31 16:05:56.366704819 +0000
@@ -13,3 +13,25 @@
 # 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 >= 1.2")
+replace_dist("SQLAlchemy >= 0.7.3")
diff -Naur ceilometer-2013.2.b1.orig/ceilometer/storage/sqlalchemy/migration.py ceilometer-2013.2.b1/ceilometer/storage/sqlalchemy/migration.py
--- ceilometer-2013.2.b1.orig/ceilometer/storage/sqlalchemy/migration.py	2013-05-30 15:09:28.000000000 +0000
+++ ceilometer-2013.2.b1/ceilometer/storage/sqlalchemy/migration.py	2013-05-31 16:03:43.209551099 +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