function mini_subroot(){
apt-get $* -o RPM::RootDir=$sbroot -o APT::Install::Virtual=true -o APT::Install::Virtual Version?=true -o Debug::pkgProblemResolver=false -o Debug::pkgRPMPM=false
}

mkdirhier $sbroot/var/lib/rpm
rpm --initdb --root=$sbroot
mini_subroot $*

вызов: gensandbox install $testedpackage