although with some hacks one can already have a poor mans real time interface for heap profiling: http://www.haskell.org/ghc/docs/latest/html/users_guide/hp2ps.html#id2677301 I'm aware of that, even did it myself a few times. That's part of the reason why I want something better. ;)
I agree that the effect of laziness can be very hard to grasp, sometimes it even feels that I traded the annoying side effects from imperative programming to "lazy effects" in functional programming... Can't seem to have my cake and lazily eat it :-) It's still less painful than "old-fashioned" side effects. You can always look at it as an opportunity to better understand your code, at least for me it was always enlightening in some way when I found the right spot for a `seq`.
Gergely -- http://www.fastmail.fm - And now for something completely differentÂ…