Haskel i'd dare say. Nevertheless I'd go with Erlang for the pragmatics/usefulness of it. Maybe route via one of:<p><a href="https://github.com/tarcieri/reia" rel="nofollow">https://github.com/tarcieri/reia</a><p><a href="https://github.com/josevalim/elixir" rel="nofollow">https://github.com/josevalim/elixir</a>