automatic copying of build results from remote Nix stores work
more-or-less automatically. All you have to do is mount the remote
FS on a subdirectory of /var/run/nix/remote-stores, e.g.
$ sshfs remote_machine:/ /var/run/nix/remote-stores/foo
* Set $NIXPKGS_ALL.
svn path=/nixos/trunk/; revision=12411