[plt-scheme] system-wide PLaneT install? (sxml in apache .cgi scripts)

I took a quick look at the v3 planet documentation (AFAICT, there is  
no v4 planet documentation), and did a brief google search, and I  
can't figure out whether there's a way to install PLaneT libraries in  
a system-wide way.

More specifically, I'd like to be able to use the sxml libraries in  
a .cgi script run through Apache.  I'm guessing that apache runs as a  
general non-privileged user with no home directory.

Any pointers appreciated,

John