Hm I think this shows our different approaches to "porting old code to something else".

I would be rather interested to create a "cross compile" code, which can be easily maintained in both languages (possibly isolating differing parts to sub-modules)

I understand that there is already a bridge to use the old CPAN modules, so you are rather concentrating on exploring Perl 6.

> but speed is about the most serious drawback at the moment.

So your goal is to write P6 code which can compete with XS code?

Wow...

Personally I'd be inclined to do it evolutionary step by step, having a full scale 1 to 1 port from P5 maybe slow, then using XS, then replacing XS with P6 "magic".

But I can easily believe that this might be too boring! ;)

Good luck and thumbs up! =)