I am attempting to get my head around a dependency scenario, with the python_artifact() scenario 1.

vcs_version(..)

creates

somefolder/VERSION

(

name = "version_txt_file"

) 2. the

python_distribution

depends upon that target

python_distribution(
    name = "jlab",
    dependencies = [
        ":pyproject",
        ":version_txt_file",
        "//:my_sources",
        "//:reqs#setuptools",
        "//:reqs#wheel",
    ],
    generate_setup = True,
    provides = python_artifact(
        name = "mylib",
    ),
    ...
)

3. have a custom plugin, which registers the custom setup_kwargs for the python distribution. the germain point is, it looks for the file, created in 1. (and changelog - but thats the same scenario - a target

shell_command(..)

produces it)

@rule
async def setup_kwargs_plugin(request: CustomSetupKwargsRequest) -> SetupKwargs:
    async def get_version() -> str:
        """returns the VERSION file contents"""
        digest_contents = await Get(
            DigestContents,
            PathGlobs(
                [f"{request.target.get(PythonProvidesField).value}/VERSION"], # this needs to be more robust later
                description_of_origin=f"{__name__}: get_version(), from `python_artifact()` plugin",
                glob_match_error_behavior=GlobMatchErrorBehavior.error,
            ),
        )
        version = digest_contents[0].content.decode().strip()
        return version

    async def get_changelog() -> str:
        ...

    version = await get_version()
    changelog = await get_changelog()

    return SetupKwargs(
        {**request.explicit_kwargs,
         "version": version,
         "long_description": changelog,
         },
        address=request.target.address
    )

so how to I "add" the target

vcs_version(..) somefolder/VERSION   (name = "version_txt_file" )

as a dependency to the macro call,

python_artifact(...)

IIRC you want the

vcs_version

target to be the dep of some

python_source

that imports or otherwise loads its output?