From one of my mailing lists:
I do not plan to port Psyco outside Python myself, but I plan to rewrite
its implementation in a much cleaner way which should make it easier to
understand. A good target would be to port Psyco to the Parrot VM; this
could accelerate all Parrot-targeted languages with minimal effort. I
must admit however that I'm a bit afraid about the Parrot VM because its
bytecode instruction set is incredibly complex.
Armin Rigo
I don't know a ton about Psyco, but I know Python programmers are a big fan of it. Time to draft this guy into the Parrot developers guild.