==================== Parser ====================
module CommentsDataInstanceDeriving where
<document comment>
data family U a
<document comment>
data instance U ()
  = UUnit
  deriving (-- | Comment on the derived  Eq   (U ())  instance
            Eq,
            -- | Comment on the derived  Ord  (U ())  instance
            Ord,
            -- | Comment on the derived  Show (U ())  instance
            Show)