watchman under SmartOS

"A file watching service.
Purpose
Watchman exists to watch files and record when they actually change. It can also trigger actions (such as rebuilding assets) when matching files change."
https://github.com/facebook/watchman

You can find pkgsrc definitions, useful to build the package under SmartOS (pkgsrc on SmartOS - zone creation and basic builds) and a binary package to be installed using pkg_add

pkg_add watchman-2.9.1nb2.tgz

This is the link: https://github.com/alcir/watchman-pkgsrc