is there a way to strip the prefix for everything above the BUILD file?

Yeah, you can use `RemovePrefix`: https://www.pantsbuild.org/docs/rules-api-file-system#addprefix-and-removeprefix But that might break imports. If you have

a/b/c/setup.py

, and it imports the module

<http://b.c.my|b.c.my>_app

, then when you strip out the

a/b/c

part to only have

setup.py

, your imports will be broken. What’s the motivation for the stripping?