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Hi team, does anyone know of a library ( hopefully in python)  that allows you to parse the Starlark BUILD file ? I am looking at some helper functionality to automatically edit/add some target definitions in existing BUILD files.

FWIW Pants' BUILD files are straight-up Python, not Starlark.

That being said, look into Bazel's Buildozer. It'll be comptaible

for adding target definitions, you might want to hook into the `tailor` goal also

if you're doing something more permanent, you can add a "fixer" to `update-build-files` to make whatever changes you want. It's a very flexible API -- takes in the  BUILD file contents as a string and then you return back what you want

thanks for the suggestions! :slightly_smiling_face:

if you haven’t seen it: <https://blog.pantsbuild.org/updating-pants-build-files-programmatically/>

ah! awesome thanks for the link, that looks like what I am looking for