I don't know. I think it would be better to have ruby 1.8 and ruby 2.0 around and to state clearly that some code requires this or that version than having to d

I don't know. I think it would be better to have ruby 1.8 and ruby 2.0 around and to state clearly that some code requires this or that version than having to deal with ruby 1.9 that is still close to 1.8 but not close enough not to break code.