In the nix CI build, this PR is introducing an ephemeral darwin arm64 build that runs in the matrix.
This darwin build does not use docker, and instead runs direct on the machine, since the runner machine itself is ephemeral. Nothing has been changed about the aarch64-linux and x86_64-linux runners or builds.
What kind of change does this PR introduce?
In the nix CI build, this PR is introducing an ephemeral darwin arm64 build that runs in the matrix.
This darwin build does not use docker, and instead runs direct on the machine, since the runner machine itself is ephemeral. Nothing has been changed about the aarch64-linux and x86_64-linux runners or builds.