[geokon]

The caps/deps node/network looks very similar to Pathom Resolvers. Those also allow for parallel execution. I think it will be a huge project to recreate all the features (and robustness) that they have there. So far I've found their engine is quit sophisticated and robust. You can have very complex declarative models (it's a very weird inside-out way to write code, but the net result is very composable)

Just my unsolicited advice, but I'd try to build your system on top of their engine if you can. It's quite extensible. For instance they don't have "capabilities" but I think it'd be very easy to add that as a resolver key that's passed around.