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{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeInType #-}
{-# LANGUAGE TypeOperators #-}
{-# OPTIONS_GHC -fprint-explicit-kinds #-}
module T14887 where
import Data.Kind
import Data.Type.Equality
type family Foo1 (e :: (a :: k) :~: (a :: k)) :: Type where
Foo1 (e :: a :~: a) = a :~: a
type family Foo2 (k :: Type) (e :: (a :: k) :~: (a :: k)) :: Type where
Foo2 k (e :: a :~: a) = a :~: a
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