homebrew tap
- remove mongodb.rb once merged in https://github.com/Linuxbrew/homebrew-core/pull/1578
- remove dmd.rb now that https://github.com/Linuxbrew/homebrew-core/pull/1725 is merged
can install directly from local rb formula: brew install $reps_D/homebrew-timutil/folly_tim.rb