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{-# LANGUAGE Haskell2010 #-}
{-# LANGUAGE TypeFamilies #-}
-- This tests what happens if we have unexported types
-- in type instances. The expected behaviour is
-- that we get the instance, Y is not linked and
-- Haddock shows a linking warning.
--
-- The other families and instances that are not exported should not
-- show up at all
module TypeFamilies2 (W, Foo, Bar) where
-- | Exported type
data W
-- | Hidden type
data Z
-- | Exported type family
type family Foo a
-- | Should be visible, but with a hidden right hand side
type instance Foo W = Z
-- | Should be hidden
type instance Foo Z = W
-- | Exported data family
data family Bar a
-- | Shown because BarX is still exported despite Z being hidden
data instance Bar W = BarX Z
-- | Should be completely invisible, including instances
type family Invisible a
type instance Invisible W = Z
type instance Invisible Z = W
data family Invisible2 a
data instance Invisible2 W = Invis Z
data instance Invisible2 Z = Invis' W
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