Cloud Haskell is a domain-speciﬁc language for developing programs for a distributed computing environment. Implemented as a shallow embedding in Haskell, it provides a message passing communication model, inspired by Erlang, without introducing incompatibility with Haskell’s established shared-memory concurrency.
For an overview of Cloud Haskell it's probably a good idea to read Towards Haskell in the Cloud (details below). The relevant documentation (in order of importance is)
If you want to know more details about Closure or Static (without the Template Haskell magic on top) you might want to read
3 Blog Posts
Cloud Haskell intros
Alen Ribic has a series of blog posts about (Cloud) Haskell on the Raspberry Pi