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|
{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE TypeFamilies #-}
{-# OPTIONS_GHC -ddump-splices -dsuppress-uniques #-}
module Bug where
$([d| type family Foo a b
type instance Foo (Maybe a) b = Either (Maybe a) (Maybe b)
data family Bar a b
data instance Bar (Maybe a) b = BarMaybe (Maybe a) (Maybe b)
|])
{-
type instance Foo (Maybe a) b = Either (Maybe a) (Maybe b)
becomes
[TySynInstD Bug.Foo
(TySynEqn
[AppT
(ConT GHC.Base.Maybe)
(VarT a_6989586621679027317)
,VarT b_6989586621679027318]
(AppT
(AppT
(ConT Data.Either.Either)
(AppT
(ConT GHC.Base.Maybe)
(VarT a_6989586621679027317)
)
)
(AppT (ConT GHC.Base.Maybe) (VarT b_6989586621679027318))
)
)
]
data instance Bar (Maybe a) b = BarMaybe (Maybe a) (Maybe b)
becomes
[DataInstD [] Bug.Bar
[AppT
(ConT GHC.Base.Maybe)
(VarT a_6989586621679027707)
,VarT b_6989586621679027708
]
Nothing
[NormalC
BarMaybe_6989586621679027706
[(Bang
NoSourceUnpackedness
NoSourceStrictness
,AppT
(ConT GHC.Base.Maybe)
(VarT a_6989586621679027707)
)
,(Bang
NoSourceUnpackedness
NoSourceStrictness
,AppT
(ConT GHC.Base.Maybe)
(VarT b_6989586621679027708)
)
]
]
[]]
-}
|
