Typechecking Hack code on VirtualBox via NFS shared folder

Question

It seems prudent to first mention this issue and then this aptly-named edit which seems related and has made hh_server refuse to run on NFS file systems. I am not very familar w

Answer 1

The main issue is the lack of inotify support for NFS, so hh_server may respond with stale data.

If you accept the risk, you can add enable_on_nfs = true to /etc/hh.conf, which will enable hh_server to check folders on NFS.