git.iko.soy/typeable/aeson
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typeable/aeson/include/overlapping-compat.h
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1#if __GLASGOW_HASKELL__ >= 710
2#define OVERLAPPABLE_ {-# OVERLAPPABLE #-}
3#define OVERLAPPING_ {-# OVERLAPPING #-}
4#else
5{-# LANGUAGE OverlappingInstances #-}
6#define OVERLAPPABLE_
7#define OVERLAPPING_
8#endif