Installation fails.

[macruby@…]

I have OS X 10.5.4 and ruby form MacPorts. After installing binary release macirb is not working:

/Library/Frameworks/MacRuby.framework/Versions/0.2/usr/lib/ruby/1.9.0/irb/context.rb:11:in `require': no such file to load -- irb/workspace.rb.bundle (LoadError)
	from /Library/Frameworks/MacRuby.framework/Versions/0.2/usr/lib/ruby/1.9.0/irb/context.rb:11:in `<top (required)>'
	from /Library/Frameworks/MacRuby.framework/Versions/0.2/usr/lib/ruby/1.9.0/irb.rb:14:in `require'
	from /Library/Frameworks/MacRuby.framework/Versions/0.2/usr/lib/ruby/1.9.0/irb.rb:14:in `<top (required)>'
	from /usr/local/bin/macirb:9:in `require'
	from /usr/local/bin/macirb:9:in `<main>'

and InterfaceBuilder do not recognize my classes. Installing testing branch form source fails. I reverted original ruby and tried again:

./miniruby -I./lib -I.ext/common -I./- -r./ext/purelib.rb ext/extmk.rb --make="/usr/bin/make" --dest-dir="" --extout=".ext" --mflags="" --make-flags="" --extension --extstatic
mkmf.rb can't find header files for ruby at ./include/ruby.h
rake aborted!
Command failed with status (1): [./miniruby -I./lib -I.ext/common -I./- -r....]

When i try to install 0.2 from source i`m getting:

make[1]: Nothing to be done for `all'.
mkmf.rb can't find header files for ruby at ./include/ruby.h
make: *** [all] Error 1