id	summary	reporter	owner	description	type	status	priority	milestone	version	resolution	keywords	cc
117	mapInputT	guest		"I have a need for a {{{mapInputT :: (m a -> n b) -> InputT m a -> InputT n b}}} function, which should provide an idiomatic way to  (e.g.) layer haskeline over some haskellDB usage (which is IO specific - {{{ transaction :: IO a -> IO a }}}).

This should be analagous to {{{mapReaderT}}}, {{{mapStateT}}} etc.

It should be short, but tricky to write. If I can come up with an implementation I'll attach it here."	enhancement	closed	major			fixed		tora@…