When I ceanctl shell; cean:install(package)., it works. But when I ceanctl install package, it says:
* CEAN 2
* Erlang 15B03
* Mac OS X 10.8.3
using ceanctl install let the installation works in cean’s cluster.
the empty list  result means no install can be done as no cean node can be found.
you must ensure at least one cean instance is running.