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He has a strong opinion, but he hasn't lost the plot. It's very reasonable to say you need to develop on the architecture you wanted to deploy to. If you want to be efficient, so most companies are going to deploy to architecture they have locally.
But you're taking comments from 2019. Nowadays lots of Mac developers develop directly on arm. So by his own argument, those Mac developers would be more comfortable deploying to an arm-based architecture cuz the running on an arm-based architecture.
So broadly I agree with him, or his past comments from 2019, you're going to need local developer environments, before you're going to get efficient server software
ARM on Mac isn't nearly as helpful for workloads on an ARM server as x86 PC for an x86 server. The differences in hardware behavior between the two x86 parts is small because the platforms are standardized way beyond the instruction set. The ARM server on the other hand has nothing to do with the Mac beyond the instruction set. Something runs great on your Mac because of the on-SoC ridiculously fast RAM. You throw it on an ARM server with completely different ARM CPUs, slotted RAM and a bottleneck shows up.
I hope we get there soon with RISC-V.
I hate my M2 Mac because I hate Macs and Docker doesn't always work correctly.
If you run an ARM system inside docker, it works much better!
Many pre-baked images may be x86 only. However, thanks to M processors there’s a real demand for more than Raspberry Pi, so this will get better too.
Unfortunately I was trying to build WebRTC, which is supported on Linux only.
There’s aarch64 version of Linux.
Not all the dependencies are supported on aarch64 unfortunately.
I'd be surprised if Docker worked at all on an M2, because it doesn't work worth a shit on an x86 Mac.