--watchfs should track output files, too

[benjaminp]

--watchfs avoids stating input files in the package path before every build. However, Bazel still checks the validity of cached action state by stating all the action output files it knows about. It would be nice if --watchfs could watch output files and obviate stating all of them before execution starts.

[ulfjack]

The --watchfs infrastructure needs to be rewritten and made more generic, and yes, it should absolutely support output tree tracking as well. It's been on my todo list for a long time. :-/

[ulfjack]

I'm afraid I won't be able to work on this.

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