It is largely transliterated from the Inferno version
written in Limbo which in turn was largely transliterated
from the Plan 9 version written in C and documented at
http://plan9.bell-labs.com/magic/man2html/1/yacc
- https://github.com/facebookexperimental/mononoke - I hear this is a real thing and not a science fair project
- https://github.com/bors-ng/bors-ng - Needed in a monorepo to handle high arrival rate of commits / merges