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Tue May 21 08:13:50 EDT 2019

automatic deriving is a mess

I'm just cargo-culting this for now.  It works with these, which is
the only thing I'm interested in.

{-# LANGUAGE DeriveFunctor #-}
{-# LANGUAGE DeriveTraversable #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}




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