fourmolu-0.13.0.0: data/examples/declaration/value/function/operators-6.hs

import Servant.API

type PermuteRef =
       "a" :> (    "b" :> "c" :> End
              :<|> "c" :> "b" :> End
              )
  :<|> "b" :> (    "a" :> "c" :> End
              :<|> "c" :> "a" :> End
              )