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T9036.hs:18:17: error:
• Couldn't match type: GetMonad t0
with: GetMonad t
Expected: Maybe (GetMonad t after) -> Curried t [t]
Actual: Maybe (GetMonad t0 after) -> Curried t0 [t0]
NB: ‘GetMonad’ is a non-injective type family
The type variable ‘t0’ is ambiguous
• In the ambiguity check for ‘simpleLogger’
To defer the ambiguity check to use sites, enable AllowAmbiguousTypes
In the type signature:
simpleLogger :: Maybe (GetMonad t after) -> t `Curried` [t]
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