Add this repository to your Debian/Ubuntu machine 


As root put this:

  deb http://trygvis.dyndns.org/~trygvis/2011/12/sbt-dpkg/repository/debian ./

into a file called:

  /etc/apt/sources.list.d/trygis.dyndns.org.list

Run:

  apt-get update
  apt-get install sbt-<version>