
compiler/simplCore/CoreMonad.lhs:835:10: Non type-variable argument in the constraint: MonadPlus IO (Use -XFlexibleContexts to permit this) In the context: (MonadPlus IO) While checking an instance declaration In the instance declaration for `A.Alternative CoreM' compiler/simplCore/CoreMonad.lhs:841:10: Non type-variable argument in the constraint: MonadPlus IO (Use -XFlexibleContexts to permit this) In the context: (MonadPlus IO) While checking an instance declaration In the instance declaration for `MonadPlus CoreM'
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