nova-vncproxy conflicts with novnc

On essex, it is not possible to install both nova proxy (novnc and nova-vncproxy) on the same machine as nova-vncproxy has a conflicts with novnc:

ubuntu@compute2:~$ dpkg-query -p nova-vncproxy
.....
Conflicts: novnc
.....

ubuntu@compute2:~$ dpkg -l nova-vncproxy
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Description
+++-========================================-========================================-================================================================================================
ii nova-vncproxy 2012.1.3+stable-20120827-4d2a4afe-0ubunt OpenStack Compute - VNC proxy

According to this post, this is not the case on the debian package
https://lists.launchpad.net/openstack/msg16446.html

It could be handy to have the 2 different proxy on the same box so one single machine could be dedicated to host both vnc proxy services (1 for horizon, the other one for the java client).

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: nova-vncproxy (not installed)
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.0-31-generic x86_64
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
Date: Mon Sep 24 15:45:56 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
SourcePackage: nova
UpgradeStatus: Upgraded to precise on 2012-05-14 (133 days ago)