All the utility originally using RPM to probe one vserver package database
are now using the script /usr/lib/vserver/distrib-info. This is a front-end
to potentially all packaging system. Currently, only RPM is supported
but DEB and other packaging facility could be added, making all
application like vunify, vbuild, newvserver and friend, more general.
Debian user have complained for some time. Now your chance. Patch
for distrib-info welcome.
A man page has been written to explain what it does.