3 ms·
> Apple had no money or time to invest in rewriting NeXTStep for a completely new kernel they had no experience in. And even if they had had the money and time
by CharlesW 2y ago
> Apple had no money or time to invest in rewriting NeXTStep for a completely new kernel they had no experience in.
And even if they had had the money and time, Avie Tevanian¹ was a principal designer and engineer of Mach². There was no NeXTSTEP-based path where the Mach-derived XNU would not be at the core of Apple's new OS family.
¹ https://en.wikipedia.org/wiki/Avie_Tevanian https://en.wikipedia.org/wiki/Avie_Tevanian ² https://en.wikipedia.org/wiki/Mach_(kernel) https://en.wikipedia.org/wiki/Mach_(kernel)