> > -- Just for fun, make it work with StateT as well > > -- (needs -fallow-undecidable-instances) > > > instance (Monad (t m), MonadTrans t, MonadPrompt p m) => MonadPrompt p > (tm) where > > prompt = lift . prompt >
Looks like that should be MonadPrompt p (t m) rather than (tm). Note the space. -Brent
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