I've downloaded this new distribution and have been playing around for about a day (much to the dismay of my growing backlog of work tasks). It's very exciting; the wrappers around the speech stuff on OS X are a nice touch.
I'd like to have as few copies of the base Inferno install lying around as possible. It looks like osrc.tgz is safe to unpack into a stock distribution, which is very good, but is that everything? That is, is o.tgz exactly osrc.tgz + inferno-os? Anthony