>> "how do you invoke the right copy of the mount program, to do the mount?"
>> "how do you invoke the right copy of the shell?"
>> and
>> "how do you invoke the right copy of init?"
>
>> yeah, you could hack the kernel.  or prompt.  however, the latter's
>> not very nice if you want to be able to have a "one big button"
>> install program.  8-)
>
>Have the kernel glob /etc/init.arch.* and step down them, running the
>first one that doesn't produce ENOEXEC?  :-)

What about the namei hack where you symlink /usr/bin -> /usr/@sys/bin
and namei expands @sys into 'i386' or whatever?  It works for Lites.