I love this sort of thing. I wish there were a better alternative for ISF[1], it's quickly showing it's age. The kind of GPU sand boxed graph construction that this enables would be really powerful with the right "linker". I'm thinking about drafting a proposal for wesl[2] to have a more ergonomic reflection and metadata system to make this kind of quick and scrappy pipeline construction feel first class in shader tooling. Slang has something like this, so does GDShader and the shader tooling for unity.

[1]: https://isf.video/ [2]: https://github.com/wgsl-tooling-wg/wesl-rs