Using heist as a template engine

In this recipe, we will work with heist, a templating framework that can work with HTML or XML documents. The heist framework is also a default templating framework used for the Snap web development framework. At the same time, heist does not have any dependency on Snap and can be used independently.

In this recipe, we will create a template and bind a value to the template.

How to do it...

1. Create a new project, working-with-heist, with a simple stack template.

        stack new working-with-heist simple

2. Add a dependency on the heist library in the build-depends sub-section of the executable section:

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

3. The heist library does not exist...