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{-# LANGUAGE TypeFamilies, FlexibleInstances, FlexibleContexts #-}
module CbvOverlap where
-- This is concerned with Note [Type variable cycles in Givens] and class lookup
class C a where
meth :: a -> ()
instance C Int where
meth _ = ()
type family F a
foo :: C (F a) => a -> Int -> ()
foo _ n = meth n
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