using: self-hosted macOS (M1 chip)

- name: Install ruby
  uses: ruby/setup-ruby@v1
  env:
    ImageOS: macos1015

1st libgmp.10.dylib error:

The installation failed on "Print Ruby version" step with the error below:

Reason: tried: '/usr/local/opt/gmp/lib/libgmp.10.dylib' (no such file), '/usr/local/lib/libgmp.10.dylib' (no such file), '/usr/lib/libgmp.10.dylib' (no such file)

I have gmp installed with homebrew and hence the libgmp.10.dylib is located under /opt/homebrew/Cellar/gmp/6.2.1_1/lib/libgmp.10.dylib

2nd libgmp.10.dylib error

I manually installed gmp to ensure /usr/local/lib/libgmp.10.dylib will be available

but then, got a new error:

'/usr/local/lib/libgmp.10.dylib' (mach-o file, but is an incompatible architecture (have 'arm64', need 'x86_64')),