How to package C headers?

[TheOnlySilverClaw]

Not sure whether it's a bug, missing documentation or me being blind, so I'm asking here:

Is there currently any way to make a V library package include C headers without the package user having to worry about those?

My assumption was, if I had a package like this:

include/some_header.h
lib.v
v.mod

I could include the header in lib.v like this:

module lib

#flag -I @VMODROOT/include

#include "some_header.h"

That seems to work for compiling the library itself. But when I try to use it as a dependency, the depending project can't find the header. Is that intentional?