[racket-dev] GNU lightning version

Hi!

I hope I chose the correct mailing list for my question: are there any 
reasons why Racket currently uses very old
version of GNU Lightning? According to sources, Racket 6.1 uses GNU 
Lightning version 1.2 which originates from 2004 and current version of 
GNU Lightning is 2.0 which supports many new back-ends, particularly MIPS.

Is it manpower problems (there is nobody who can upgrade this component 
in Racket), technical ones or something else?

-- 
Thanks,
Yaroslav