Could you be a bit more specific about what makes Haskell the language for this? I'm not sure it's going to be more comprehensible than Perl, for those who don't write Haskell full-time. I'm not sure it's going to be easier to read through the lines of an input file than it is in Perl, and I'm not sure it's going to be easier to apply regexes to lines than it is in Perl.

Is one of those assumptions wrong? Can you state why it's wrong?

Or do I need to adjust my sarcasm detector?