Static file subsite Hello World

The simplest way to serve static files. This is a clean example without the other features in the scaffolded site.

{-# LANGUAGE QuasiQuotes, TemplateHaskell, OverloadedStrings, TypeFamilies, MultiParamTypeClasses #-}
import Yesod
import Yesod.Static

staticFiles "static"

data App = App
    { getStatic :: Static
    }

mkYesod "App" [parseRoutes|
/ RootR GET
/static StaticR Static getStatic
|]

instance Yesod App

getRootR :: Handler RepHtml
getRootR = defaultLayout [whamlet|$newline never
<img src=@{StaticR image_png}/>|]

main :: IO ()
main = do
    -- Get the static subsite, as well as the settings it is based on
    static@(Static settings) <- static "static"
    warpDebug 3000 $ App static