Based upon some troubleshooting
Using type -p ruby gives /sw/bin/ruby
From the command line if I type
/usr/bin/env ruby --version
I get ruby 1.8.1 (2003-12-25) [powerpc-darwin]
The command will run correctly if I explicitly set the ruby executable to /sw/bin/ruby
but not if I use #!/usr/bin/env ruby
Checking the path as given on the wiki shows /sw/bin.
Oh well, I guess I'll manually change the commands in the bundles as I need them.
Thanks,
Tim.