Hi Gabriel,
MiniZinc and its dependencies seem to work well on aarch64-apple-darwin. We are currently working in adding a universal MacOS build (which includes both x86_64 and arm64) to our CI system to allow us to include native MacOS ARM builds in the release and hopefully run tests on them as well. It seems that it is currently the CBC build that is a bit tricky to build as a universal library. This means that it will not yet be part of the upcoming MiniZinc path release, but will hopefully be available soon.
In the meantime the homebrew build seems to be working correctly on aarch64-apple-darwin. This includes gecode and CBC, but does not include the connections to proprietary solvers.
As far as I’m aware we have not tested MiniZinc on any linux or windows arm64 targets, but they should not pose many more problems apart from possible differences in platform/c++ libraries. Please let us know if you come across any issues.
Kind regards,