Watchman/buck2 integration

I have a project on Linux which has been converted to use buck2 as the build system. Watchman is recommended as a prerequisite for using buck2 (https://buck2.build/docs/legacy/basics/getting-started/#prerequisites-1).

Running both separately doesn't appear to be an issue, but buck2 is simply using the default, iNotify, for its file watching. I am unable to find any documentation for how to integrate watchman with buck2.

How can I achieve using watchman as the file watching service for buck2?

Issue raised in parallel for watchman: [https://github.com/facebook/watchman/issues/1177](https://github.com/facebook/watchman/issues/1177)