apt-xapian-index 0.44ubuntu3 package missing python-support dependencies

[Opaflamme]

RELEASE: Oneiric Ocelot Beta2
CD/DVD VARIANT: 32bit Kubuntu alternate CD
I have used Kubuntu with alternate CD and "command line" mode -> minimal installation.
Then i update with apt to get last package version and have a bug with apt-xapian-index :

apt-xapian-index: Building new index in background...
/var/lib/dpkg/info/apt-xapian-index.postinst: 46: update-python-modules: not found

On my Natty install
- update-python-modules come from python-support
dpkg -S update-python-modules
python-support: /usr/sbin/update-python-modules
- deps for apt-xapian-index
Depends: python (>= 2.4), python-xapian (>= 1.0.2), python-apt (>= 0.7.93.2), python-debian (>= 0.1.14), python-support (>= 0.90.0)

On Oneiric deps for apt-xapian-index 0.44ubuntu3 :
Depends: python (>= 2.7.1-0ubuntu2), python-xapian (>= 1.0.2), python-apt (>= 0.7.93.2), python-debian (>= 0.1.14), python2.7 | python2.6, python (<< 2.8)

So i think that python-support deps is missing.