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{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE TypeApplications #-}
module T14808 where
import Data.Kind
data ECC ctx f a where
ECC :: ctx => f a -> ECC ctx f a
f :: [()] -> ECC () [] ()
f = ECC @() @[] @()
data ECC2 f a ctx where
ECC2 :: ctx => f a -> ECC2 f a ctx
f2 :: [()] -> ECC2 [] () ()
f2 = ECC2 @() @[] @()
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