john saylor wrote:
as i understand it, darwin is a fork of freebsd. apple has some non-open
stuff in there too.

You misunderstand it. The kernel, XNU, is FreeBSD + Mach, both open source. The userland is main line FreeBSD. Apple contributes code changes upstream to FreeBSD and Mach. See:

http://www.opensource.apple.com/

There are some binary blob drivers but that's no different than binary blob drivers commonly added to Linux kernels by Ubuntu, Red Hat, et.al.

Aqua, the graphical layer, is proprietary but it isn't part of Darwin.


[email protected] wrote:
> "darwin" is pretty dead. Apple stopped providing updates a long time
> ago.

Incorrect, Mark. See link above which includes the full Darwin source trees from the very first version (10.0.0) of OS X all the way up to almost current (10.8.4). Almost because 10.8.5 was just released this week and the source code hasn't yet made its way over.

--
Rich P.
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