A graphical repl. Would be great for kids learning to program. e.g. Prelude> 3 + 4 7 Prelude> \x -> x * x <interactive>:1:0: No insta

A graphical repl. Would be great for kids learning to program. e.g. Prelude> 3 + 4 7 Prelude> \x -> x * x <interactive>:1:0: No instance for (Show (a -> a)) arising from a use of `print' at <interactive>:1:0-10 Possible fix: add an instance declaration for (Show (a -> a)) In a stmt of a 'do' expression: print it Would be great if it could display a scrollable graph of y = x² instead.