Hi,
I'm curious about mit-scheme on amd64's progress as well.
I've been able to install mit-scheme on amd64 by dowloading the i386 package
and installing with dpkg --force-architecture -i, though this is not ideal.
Knowing nothing about package maintenance, and armed with the very basic
TLDP howto (
http://tldp.org/HOWTO/html_single/Debian-Binary-Package-Building-HOWTO/) and
not enough time, I managed to build mit-scheme on my amd64 system and make a
package that passes a lintian check. You can download it here
http://www.gmclean.org/mit-scheme_9.0.1-1_amd64.deb. Let me know if it
works, if I'm a complete putz, etc. Hope it helps some folks, works on my
amd64 machine.
Best wishes,
-Garrett