Using Cloud Haskell to start master and slave nodes

In this recipe, we will use simplelocalnet to create master and slave nodes. We will start slave nodes and a master node, and use the master node learn about the slave nodes.

How to do it...

1. Create a new project called master-slave with the simple stack template:

        stack new master-slave simple

2. Add a dependency on the distributed-process and distributed-process-localnet libraries in the build-depends sub-section of the executable section:

        executable master-slave
          hs-source-dirs:      src
          main-is:             Main.hs
          default-language:    Haskell2010
          build-depends:       base >= 4.7 && < 5
                             , distributed-process
                             , distributed-process-simplelocalnet

3. Note that you might have to add the dependent library specifically to the extra-deps section, as these libraries are not part of stackage LTS at the time of writing this recipe...