It provides dpkg-ruby (a dpkg-awk clone) and dpkg-checkdeps (check utility of deb dependency problem).
libdpkg-ruby1.8 | modules/classes for dpkg on ruby 1.8 | Mehr ...
It provides Debian::Dpkg and Debian::DpkgDeb modules and Debian::Deb, Debian::Dsc, Debian::Archives, Debian::Sources, Debian::Packages and Debian::Status classes on ruby 1.8.