id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
1694	Data.ByteString.Lazy.groupBy always raises an exception	guest		"This is not documented in the Haddock library ref.

The implementation of groupBy in Data.ByteString.Lazy is:

groupBy = error ""Data.ByteString.Lazy.groupBy: unimplemented""

I think it would be better to not define the function at all than to define a version that is constantly broken."	bug	closed	normal		libraries/base	6.6.1	fixed			Linux	x86		Unknown