MacOS builds are guaranteed to be non-deterministic

[mtl1979]

MacOS 11 was last to support deterministic builds and it's being slowly retired from GitHub runners, which means the pkgcheck workflows can intermittently fail until they stop working completely.

[nmoinvaz]

https://gist.github.com/pudquick/89c90421a9582f88741b21d10c6a155e
It suggests we may be able to get around it by using a different linker.

[mtl1979]

https://gist.github.com/pudquick/89c90421a9582f88741b21d10c6a155e It suggests we may be able to get around it by using a different linker.

There is differences even before it tries to use linker, so comparing object files already fails... I got as far as having just 1 byte difference, but my knowledge of the executable format used by Mac is quite limited and I don't have recent enough Mac hardware to test, so I can only use the CI to test.