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T17139.hs:15:16: error: [GHC-88464]
• Found hole: _ :: (a -> b0) -> (a -> a) -> TypeFam ((->) a) b0
Where: ‘b0’ is an ambiguous type variable
‘a’ is a rigid type variable bound by
the type signature for:
lift :: forall a b (f :: * -> *). (a -> b) -> TypeFam f (a -> b)
at T17139.hs:14:1-38
• In the expression: _ (f <*> x)
The lambda expression ‘\ x -> _ (f <*> x)’ has one value argument,
but its type ‘TypeFam f (a -> b)’ has none
In the expression: \ x -> _ (f <*> x)
• Relevant bindings include
x :: a -> a (bound at T17139.hs:15:11)
f :: a -> b (bound at T17139.hs:15:6)
lift :: (a -> b) -> TypeFam f (a -> b) (bound at T17139.hs:15:1)
T17139.hs:15:19: error: [GHC-25897]
• Couldn't match type ‘b’ with ‘a -> b0’
Expected: a -> a -> b0
Actual: a -> b
‘b’ is a rigid type variable bound by
the type signature for:
lift :: forall a b (f :: * -> *). (a -> b) -> TypeFam f (a -> b)
at T17139.hs:14:1-38
• In the first argument of ‘(<*>)’, namely ‘f’
In the first argument of ‘_’, namely ‘(f <*> x)’
In the expression: _ (f <*> x)
• Relevant bindings include
x :: a -> a (bound at T17139.hs:15:11)
f :: a -> b (bound at T17139.hs:15:6)
lift :: (a -> b) -> TypeFam f (a -> b) (bound at T17139.hs:15:1)
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