id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
3422	No match in record selector Var.tcTyVarDetails	guest	chak	"See http://hpaste.org/fastcgi/hpaste.fcgi/view?id=7993#a7993

This also happens on ghc 6.10.4

KiYungAhn"	bug	closed	normal		Compiler	6.10.4	duplicate	deriving instance, type family		Linux	x86