[jhc] darcs patch: Show both types when printing rules

Sun Apr 13 20:45:01 EDT 2008 Samuel Bronson * Show both types when printing rules This turns up trouble with the Kleisli instance RULES. I guess if you copy and paste that stuff from Control.Arrow, or comment out the (->) stuff, you should see what I mean... anyway, the LHS type doesn't seem to match the RHS type.