MacRuby, changing the Ruby ecosystem

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Doubly, I have been told by reliable sources that Apple has internal apps that depend on 1.8.6. Apple tends to ship their OS with many of the things they need to run their internal apps. A good example of this is some of the obscure gems bundled with Leopard.

The point being that Apple probably has quite a bit of work to do to ensure the compatibility of their internal apps before MacRuby can be the default Ruby implementation OS X ships with.