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

Pants

OK folks, polymorphic call-by-name is finally ready for review!
<https://github.com/pantsbuild/pants/pull/22375>

The perf issues have been resolved, and that PR now demonstrates three quite different uses of unions: PackageFieldSet, GenerateSourcesRequest and GenerateTargetsRequest

I’m now reasonably confident that this is a good design that will work for all our unions

Reviewing will require some engine knowledge, so I’ve cast a wide net, feel free to ask me any questions!