How to run radiant in subdirectory

I have been trying to get Radiant to run from a subdirectory and
around give the impression that since 0.6 version isis not really
to work from a subdirectory.

Is there a good work around for that anyway?

If I Radiant is installed via downloading to folders through svn rather
the gem with the single location will that make it easier?

ie having a separate complete install for every directory I want it
installed in?