My Haskell experiments have reached a size in which debugging tools would be more than welcome, so I looked around, and was very disappointed. I tried Hood, which is a pain to use (lots of editing of the code required), I looked at Buddha but didn't want to downgrade to GHC 5 for trying it (nor is my code Haskell 98, because of multi-parameter classes), and all that seems left to try is Hat, whose Web site I can't reach at the moment.
Hi Konrad, The next release candidate of buddha 1.0 will work with ghc 6. I am in Sweden at the moment, which is VERY far away from home, so I won't be able to release it until next week. As for multi parameter type classes buddha might have enough unofficial support for them, but not functional dependencies at the moment. As a designer of debugging tools it is very useful for me to know what kind of things people want. Your input will help me to prioritise the things that I implement. If you have programs with bugs in them then I would love to see them. Test cases from "the wild world" are very useful to me also. I'm sorry that you are disappointed, but I hope that with your feedback the situation can be improved. Cheers, Bernie.