nova client requires NOVA_VERSION in environment

It seems that nova-client is currently busted.

#!/bin/sh
export NOVA_API_KEY="XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"
export NOVA_USERNAME="smoser"
export NOVA_PROJECT_ID="smoser_project"
export NOVA_URL="http://mynova:8774/v1.0/"

[ -n "$PDIR" ] &&
   export PYTHONPATH=$PDIR && PATH=$PDIR/bin:$PATH
exec "$@"

$ ./ngo nova image-list; echo $?

1

$ git clone https://github.com/rackspace/python-novaclient.git trunk.git
$ cd trunk.git
$ PDIR=$PWD ../ngo nova image-list > out
$ sed -n '1,5p;6s/.*/../<snip>/p;$p' out
+-----+------+----------+--------+
| ID | Name | serverId | Status |
+-----+------+----------+--------+
| 1 | None | | ACTIVE |
| 2 | None | | ACTIVE |
<snip>
+-----+------+----------+--------+

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: python-novaclient 2012.1~e3~20120111.452-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-10.17-generic 3.2.1
Uname: Linux 3.2.0-10-generic x86_64
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Mon Jan 23 09:26:30 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: python-novaclient
UpgradeStatus: Upgraded to precise on 2011-11-07 (77 days ago)