Devstack broken by horizon refactor

Still seeing errors in current merged build. Verified fixes are in.

Verified March 6 15:30 PST

Output follows:

Installed /opt/stack/nova
Processing dependencies for nova==2012.1
Finished processing dependencies for nova==2012.1
+ is_service_enabled horizon
+ services=horizon
+ for service in '${services}'
+ [[ ,g-api,g-reg,key,n-api,n-crt,n-obj,n-cpu,n-net,n-vol,n-sch,n-novnc,n-xvnc,n-cauth,horizon,mysql,rabbit, =~ ,horizon, ]]
+ return 0
+ cd /opt/stack/horizon
+ sudo python setup.py develop
Traceback (most recent call last):
  File "setup.py", line 24, in <module>
    from horizon import version
  File "/opt/stack/horizon/horizon/__init__.py", line 29, in <module>
    from horizon.base import Horizon, Dashboard, Panel, Workflow
  File "/opt/stack/horizon/horizon/base.py", line 38, in <module>
    from horizon.decorators import (require_auth, require_roles,
  File "/opt/stack/horizon/horizon/decorators.py", line 29, in <module>
    from horizon.exceptions import NotAuthorized, NotFound
  File "/opt/stack/horizon/horizon/exceptions.py", line 129, in <module>
    swiftclient.Error,
AttributeError: 'module' object has no attribute 'Error'
++ failed
++ local r=1
++ set +o xtrace

That error has nothing to do with the refactor. It showed up afterwards and is related somehow to the packaging of cloudfiles. If there isn't a separate ticket for it open already there ought to be.