1 files changed, 4 insertions, 7 deletions
diff --git a/src/HSVIS/AST.hs b/src/HSVIS/AST.hs
index f95a3cc..8bb2d6c 100644
--- a/src/HSVIS/AST.hs
+++ b/src/HSVIS/AST.hs
@@ -1,15 +1,10 @@
-{-# LANGUAGE ConstraintKinds #-}
 {-# LANGUAGE DataKinds #-}
 {-# LANGUAGE FlexibleContexts #-}
-{-# LANGUAGE FlexibleInstances #-}
-{-# LANGUAGE GADTs #-}
-{-# LANGUAGE KindSignatures #-}
-{-# LANGUAGE PolyKinds #-}
 {-# LANGUAGE StandaloneDeriving #-}
+{-# LANGUAGE TypeApplications #-}
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE TypeOperators #-}
 {-# LANGUAGE UndecidableInstances #-}
-{-# LANGUAGE TypeApplications #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE ConstrainedClassMethods #-}
 module HSVIS.AST where
@@ -63,7 +58,7 @@ type family EMapperTelescope fs s1 s2 a where
 
 
 newtype Name = Name String
-  deriving (Show, Eq)
+  deriving (Show, Eq, Ord)
 
 data Program s = Program [DataDef s] [FunDef s]
 deriving instance (Show (DataDef s), Show (FunDef s)) => Show (Program s)
@@ -89,6 +84,8 @@ data Kind s
   -- extension point
   | KExt (X Kind s) !(E Kind s)
 deriving instance (Show (X Kind s), Show (E Kind s)) => Show (Kind s)
+deriving instance (Eq (X Kind s), Eq (E Kind s)) => Eq (Kind s)
+deriving instance (Ord (X Kind s), Ord (E Kind s)) => Ord (Kind s)
 
 data Type s
   = TApp (X Type s) (Type s) [Type s]