> Apart from that, for the UNIX part, the source is available for quite a few components:

Strictly speaking, Apple can claim to ship a UNIX® operating system:

* https://www.opengroup.org/openbrand/register/apple.htm

* https://www.opengroup.org/openbrand/register/

Strictly speaking, Apple cannot. macOS as-shipped cannot complete the UNIX v3 certification test suite until you:

  disable System Integrity Protection, enable the root account, enable core file generation, disable timeout coalescing, mount any APFS partitions with the strictatime option, format your APFS partitions case-sensitive (by default, APFS is case-insensitive, so you’ll need to reinstall), disable Spotlight, copy the binaries uucp, uuname, uustat, and uux from /usr/bin to /usr/local/bin and the binaries uucico and uuxqt from /usr/sbin to /usr/local/bin, set the setuid bit on all of these binaries, add /usr/local/bin to your PATH before /usr/bin and /usr/sbin, enable the uucp service, and handle the mystery issues listed in the four Temporary Waivers.

https://www.osnews.com/story/141633/apples-macos-unix-certif...

Yeah for a while they used that in marketing copy actually, but it's been a while I think.

Darwin is still available. Open source no one’s picked up the gauntlet…

> And why would you need that to run LLMs?

kokonokko1337 already said it was good enough to run LLMs, presumably RunSet isn't saying the source code is needed to run an inference server.