Bootstrapping a new XEmacs install

As the ETH now finally gives out free PPP access to its employees I bought a modem for at home. Of cource I checked XEmacs out of the CVS (21.2) and proceeded with a fresh install. As far as I thought (and is documented) the only package one needs to install by hand is efs, so I ftp'ed and typed M-x pui-list-packages. Unfortunately it was a no go. Efs needs at least 'comint' and 'passwd'. What is the minimal package tree needed to start from? IMHO it should be possible to ditch these dependencies on comint and passwd both are not needed when bootstrapping. Jan