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

Pants

When I get a rule error like so:
```No source of dependency PythonNativeCode for @rule(...```
And where `PythonNativeCode` is a Subsystem - the "No source of dependency" bit seems clearly a lie. Should I:
1. Just treat the wording as wrong / misleading.
2. Take it as a clue to ... &lt;insert thing I'm not getting here&gt;

Is this in a test or production? If in a test, you may need to register SubsystemRule

I'd still like to figure all this out, but I gave up for now and fell black to plan 5 to get around rule errors I couldn't understand.

I'm not sure I'm out of the woods yet since I've been hitting - everything works, then it doesn't ... but I've now convertd ~85% of potential use-sites, so I'm hopeful.