Dammit, Rust really broke me.

I'm trying to change my Django project to, instead of producing a very complicated structure that it does in the view, do it beforehand and save it as json (so it is cached and kept as history).

But it is, as mentioned, complicated. And I could just load the JSON into the structure to continue processing. But I can't, 'cause JSON loads does not support providing my own classes/inner classes when deserializing -- which I can using Serde and Rust typing system.