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T13819.hs:12:10: error:
• Couldn't match type: w0 -> A w0
with: A a
Expected: a -> A a
Actual: a -> w0 -> A w0
• Probable cause: ‘pure’ is applied to too few arguments
In the expression: pure @(_ -> WrappedMonad A _) @(_ -> A _) pure
In an equation for ‘pure’:
pure = pure @(_ -> WrappedMonad A _) @(_ -> A _) pure
In the instance declaration for ‘Applicative A’
• Relevant bindings include
pure :: a -> A a (bound at T13819.hs:12:3)
T13819.hs:12:17: error:
• Expected kind ‘* -> *’, but ‘_ -> WrappedMonad A _’ has kind ‘*’
• In the type ‘(_ -> WrappedMonad A _)’
In the expression: pure @(_ -> WrappedMonad A _) @(_ -> A _) pure
In an equation for ‘pure’:
pure = pure @(_ -> WrappedMonad A _) @(_ -> A _) pure
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