How to debug/play with scheme code?

[Matthias Kilian]

Hi,

since I'd like to become a "brilliant LilyPond hacker", and I currently
want to do some more ore less evil scheme hacking, I wonder wether
there's an easy way to debug scheme code or to get something like an
interactive scheme interpreter with LilyPond's extensions allready loaded.
Starting with .ly files isn't very convenient.

Thanks in advance.

Regards,
        Kili