Support overriding get-time (or gettimeofday)
get-internal-run-time (with millisecond resolution in most cases) and doesn't support overriding this choice.
I would like to be able to sometimes use
CFFI and its wrapper around
gettimeofday syscall, which often provides microsecond resolution.
Is supporting overrides or conditionally supporting
CFFI a better way to do this? I can prepare a merge request for either approach.