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Simon Peyton Jones authored
Getting the automatic deriving mechanism to work really smoothly is surprisingly hard. I keep finding myself in TcDeriv! Anyway, this is a nice clean fix to Trac #2701.
6b1a6f30
Getting the automatic deriving mechanism to work really smoothly is surprisingly hard. I keep finding myself in TcDeriv! Anyway, this is a nice clean fix to Trac #2701.