@@ -1,5 +1,4 @@
1{-# LANGUAGE DeriveDataTypeable #-}
1{-# LANGUAGE DeriveDataTypeable #-}
2−{-# LANGUAGE StandaloneDeriving #-}
3{-# LANGUAGE ExistentialQuantification #-}
2{-# LANGUAGE ExistentialQuantification #-}
4{-# LANGUAGE GeneralizedNewtypeDeriving #-}
3{-# LANGUAGE GeneralizedNewtypeDeriving #-}
5{-# LANGUAGE DeriveGeneric #-}
4{-# LANGUAGE DeriveGeneric #-}