Are there architecture documents or something more conceptual describing how some of the innards of Pants work? I'm diving into the graph implementation now and I'm making progress on what I'm trying to do, but having a bit of an overview tends to suit my learning style better. Are there... diagrams or something?

for the graph in particular, there is this: https://www.pantsbuild.org/docs/internal-rules-architecture

The maintainers also have a Google drive with various design documents that John pulled out of the archives. There might be something relevant for you in there?

the graph crate in particular has a README: https://github.com/pantsbuild/pants/tree/main/src/rust/engine/graph#readme

🤦🏻 I thought I looked there already

Nice!