enhancement request: extension node dependencies

[mobileink]

OCaml extension nodes and attributes are a form of dependency. So are extension operators and literals, I suppose. I'd like to have a tool that can analyze source files and tell me what their extension points are. I'm not aware of any tool that can do this. It seems like a good fit for codept, though.

[Octachron]

Extension nodes and attributes are not really a form of dependency: they don't create an interrelated network of dependencies that must be discovered before building.

Collecting extension nodes and attributes can be done nearly directly using compilerlibs, I am thus not convinced by the idea of integrating this feature in codept.