Ergonomic, hermetic, user-friendly software build system for Python, Go, Java, Kotlin, Protobuf, Scala, Shell. Pants lets you fearlessly scale up your codebase!

Pants

`AddressWithBuild`? `AddressWithBuildPath`? The TODO from Benjy suggests ~ this design, which I think makes sense:

```@dataclass(frozen=True)
class AddressWithBuild
  address: Address
  build_path: str```

Longer term, it’d be neat to store the line number on this. That’s been a long TODO for better error messages 

`BuildAddress` strikes me as reasonable, but yeah I also kinda like `BuildFileAddress`. maybe we could temporarily rename the current version of the type so that the refactord version can keep the current name?

I realized I don’t think we can ever get rid of the original. It’s deeply embedded in V1 world and that’s a lot of wasted energy to update all those call sites, including a waste for plugin authors 

We need to use another name. I’m thinking `BuildAddress` because it allows us to add additional attributes like the lineno 

I like it. Allows us to add more fields over time

Maybe we even change Target to use it. Then it could do things like refer to the line number in error messages 