python-glanceclient has a bad version dep on python-prettytable

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"

 dpkg -l python-glanceclient
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 python-glanceclient 1:0.5.1.8.cdc06d9+git201210051430~precise-0u Client library for Openstack glance server.

# apt-cache show python-glanceclient | grep -i Depends
Depends: python-httplib2, python-keystoneclient, python-prettytable, python-setuptools, python-warlock, python2.7, python (>= 2.7.1-0ubuntu2), python (<< 2.8)

========

However, python-glance client has a dep on prettytable>=0.6,<0.7

Traceback (most recent call last):
  File "/usr/bin/glance", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2711, in <module>
    parse_requirements(__requires__), Environment()
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 584, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: prettytable>=0.6,<0.7

If you have python-prettytable-0.5-1ubuntu2 installed, it will not upgrade and will throw this error.