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{-# LANGUAGE DeriveAnyClass #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE StandaloneDeriving #-}
module T15398 where
newtype Radius a = Radius a deriving (Eq, Ord)
data CourseLine
data OpenDistance
data EndOfSpeedSection
data Zone k a where
Point :: (Eq a, Ord a) => Zone CourseLine a
Vector :: (Eq a, Ord a) => Zone OpenDistance a
Conical :: (Eq a, Ord a) => Radius a -> Zone EndOfSpeedSection a
deriving instance Eq a => Eq (Zone k a)
deriving instance (Eq a, Ord a) => Ord (Zone k a)
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