Working with Cloud Haskell

So far, we have seen multi-threaded concurrency. In this recipe, we will look at distributed concurrency, where the concurrency can be achieved through multiple processes either on the same machine or a cluster of machines. In this recipe, we will create a local node and communicate with it using tcp transport.

Getting ready

We will use cloud-haskell libraries for this.

How to do it...

1. Create a new project called working-with-cloud-haskell with the simple stack template:

        stack new working-with-cloud-haskell simple

2. Add a dependency on the distributed-process library in the build-depends sub-section of executable section. Also add support libraries and the -threaded option to ghc-options:

        executable working-with-cloud-haskell
          hs-source-dirs:      src
          main-is:             Main.hs
          ghc-options:         -threaded
          default-language:    Haskell2010
          build-depends:       base >= 4.7 && < 5
         ...