Haskell Cookbook

How to do it...

1. Create a new project, working-with-snaplets, with the simple stack template:

       stack new working-with-snaplets simple

2. Add a dependency on the snap-core library in the build-depends subsection of the executable section, as follows:

  executable working-with-snaplets
    hs-source-dirs:      src
    main-is:             Main.hs
    default-language:    Haskell2010
    build-depends:       base >= 4.7 && < 5
                       , snap-core
                       , snap-server
                       , snap
                       , lens
                       , bytestring
                       , text
                       , mtl

3. Open src/Main.hs. We will add our source here. After the initial Main module definition, add the necessary imports. Enable the OverloadedStrings and TemplateHaskell extensions, as Snap uses the Lens Template Haskell library:

{-# LANGUAGE TemplateHaskell, OverloadedStrings #-}
module Main where ...