- | noParenPred pred = pprPred pred <+> ptext (sLit "=>")
-pprThetaArrow preds = parens (sep (punctuate comma (map pprPred preds))) <+> ptext (sLit "=>")
+ | noParenPred pred = pprPred pred <+> darrow
+pprThetaArrow preds = parens (sep (punctuate comma (map pprPred preds))) <+> darrow