id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
4159	move Monad and MonadFix instances for Either from mtl to base	ross		"These patches move the Monad and MonadFix instances for Either (currently in the mtl package) to Control.Monad.Instances and Control.Monad.Fix respectively (both in the base package).  The Monad instance is still an orphan, to retain Haskell 98 compatibility, but the MonadFix instance is together with its class.  The Error constraint is removed from both instances, and the default definition of fail is used.

Discussion deadline: 20th July 2010"	proposal	closed	normal		libraries/base	6.12.3	fixed			Unknown/Multiple	Unknown/Multiple	None/Unknown