Can crc use krunkit?

[cfergeau]

krunkit is a drop-in replacement for vfkit from a cmdline argument point of view. podman-machine can make use of it, see https://docs.google.com/document/d/1IZCWAY5zMHqd0YlbnpGtCe7HNeWKQNHi8RuhujAJmg0/edit for some details.

Since it has additional features compared to vfkit, it would be interesting to know if crc can make use of it.

In order to test krunkit + crc, a few steps that come to mind:

• krunkit will need to be installed from brew and functional, and symlinked to ~/.crc/bin
• checkVfkitInstalled in preflight_checks_darwin.go needs to be skipped or adjusted as it contains a vfkit version check which likely won't work with krunkit (different version number). There must be a crc config set skip-xxxx option to avoid this code
• maybe the NewVfkitCache code and related methods in cache_darwin.go will need to be changed (but I think this code won't be run during testing).

[cfergeau]

One initial issue is https://github.com/containers/krunkit/issues/8 - krunkit is currently only available on Apple Silicon machines, it's not available for Intel-based macs.