> 
> > ... Apple is leaving the X86-64 platform for an ARM platform. ...
> 
> The recent releases of macOS went 64-bit only ...
> ... transitioned from PPC to x86.
> ... cut out a lot of old software
>

I have one leg in the MacOS world and I went through both transitions,
PPC to Intel and 32-bit to "64-bit only".

I remember both were pretty much no-events.

Ran "fink update", "ports update", and all the linux-side software was good.
Joints like VLC, Firefox, Google-chrome, issued updated packages quickly.

Commercial things like the "amazing slow downer", I remember paying
for an updated license (an app well worth the money, recommended.
but very specialized of course).

Moving our linux work from x86 to ARM is similarly a non-event, except
for the need to cross-compile for some non-self-hosting embedded
machines.

-- 
Konstantin Olchanski
Data Acquisition Systems: The Bytes Must Flow!
Email: olchansk-at-triumf-dot-ca
Snail mail: 4004 Wesbrook Mall, TRIUMF, Vancouver, B.C., V6T 2A3, Canada