[panstromek]

This is good diagnosis of the problem. I found that often the right solution is to ditch the hierarchy and use flat structure. I wrote about this some time ago: https://yoyo-code.com/embrace-flatness/

Big insight in that article is also from https://matklad.github.io/2021/08/22/large-rust-workspaces.h... about structuring large rust workspaces as a flat list.