instance (Outputable m, Outputable l) => Outputable (ZTail m l) where
ppr = pprTail
+instance (Outputable m, Outputable l, LastNode l) => Outputable (LGraph m l) where
+ ppr = pprLgraph
+
pprTail :: (Outputable m, Outputable l) => ZTail m l -> SDoc
pprTail (ZTail m t) = ppr m $$ ppr t
pprTail (ZLast LastExit) = text "<exit>"