This looks new-ish, but I remember seeing something about OSX on KVM years ago. The author's name seems familiar for some reason, however.

Found it, the same repo linked in August 2018: https://news.ycombinator.com/item?id=17763855

And September 2016: https://news.ycombinator.com/item?id=12556609

Apparently the version control model of the repo is ‘scrap everything once in a while’.