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

Pants

both relate to "which nodes and when", but the v2 UX directly consumes the `Graph` in a loop, while zipkin is doing event driven pushes

as things stand, the workunit store could _almost_ just be generated from the `Graph`, lazily, but zipkin probably should actually be event driven in order to send things out on a queue. so somewhere in between.