fourmolu-0.0.6.0: data/examples/declaration/deriving/multiline-out.hs

deriving instance
  Eq
    Foo

deriving stock instance
  Show
    Foo

deriving anyclass instance
  ToJSON
    Foo

deriving newtype instance
  Data
    Foo

deriving via
  Foo
    Int
  instance
    Triple
      A
      B
      C