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Simon Peyton Jones authored
Several things here * GHC no longer allows user-written Typeable instances, so remove them from hs-boot files. * Generally, reduce the use of instances in hs-boot files. They are hard to track. Mainly this involves using pprType, pprKind etc instead of just ppr. There were a lot of instances in hs-boot files that weren't needed at all. * Take TyThing out of Eq; it was used in exactly one place (in InteractiveEval), and equality is too big a hammer for that.
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