Can anyone get ruby-tk working on Mountain Lion?

Question

sudo port install ruby19 +mactk

runs happily without errors on Mountain Lion with Xcode 4.4 freshly installed with command line tools and the macports package for Mountain Lion installed, but a previously working ruby-tk script throws this error:

./foot.rb:6:in `require': no such file to load -- tk (LoadError)

Any ideas? Many TIA.

Answer 1

Sorry, I am an idiot. Forgot to replace the native ruby, a la

$ sudo mv /usr/bin/ruby /usr/bin/ruby.ORIG
$ sudo ln -s /opt/local/bin/ruby1.9 /usr/bin/ruby