arm64 build about cmor

[mauzey1]

@durack1 Has there been any demand for Arm builds of CMOR? CircleCI does support Arm.

I agree that this will be a low priority feature that will likely only appear in CMOR 4.x.

[durack1]

@mauzey1 I have just switched across to M1 for my personal laptop, and so while I could create an x86-64 anaconda/miniconda/mambaforge parallel install to my native arm64 I would prefer to keep everything native if possible

[fabrivelas]

I am using my M1 (macOS) with the arm64 version as well and was not able to install CMOR, neither, not knowing why, until I found this issue.

[durack1]

@fabrivelas, thanks for contributing. It is unlikely that CMOR3 will be supporting a native osx-arm64 build. We have started early-stage CMOR4 planning, and this is a priority item.

You are able to run CMOR3 in x86-64 emulation on the M1 chips, using the osx-64 CMOR builds. While we have not tested this path, it appears that you can install the osx-64 anaconda/miniconda etc variants, and then run the osx-64 CMOR3.7.0 version alongside your native osx-arm64 code - see for e.g. https://betterprogramming.pub/switching-between-multiple-conda-distributions-on-macos-b78b6b21720

[fabrivelas]

Great, thank you @durack1, It worked great, I now have a x84-64 miniconda with CMOR alongside my arm64 mambaforge.

[durack1]

@fabrivelas excellent, glad that you're back in action!