Darwin is just a name for macOS / OSX. They're the same thing. There may be confusion due to the fact that Apple used to publish a Darwin iso that you could b

Darwin is just a name for macOS / OSX. They're the same thing. There may be confusion due to the fact that Apple used to publish a Darwin iso that you could boot on their ppc machines, but that's been a long time and OSX is still Darwin. If you run uname on a mac it will tell you that it's Darwin.