I tried multiple solutions myself, this one is the closest to what I want, because: - overlays the packages on top of nixpkgs - understands setup.cfg and can g

I tried multiple solutions myself, this one is the closest to what I want, because: - overlays the packages on top of nixpkgs - understands setup.cfg and can get dependencies from it It is still not perfect, but when I find some time I think to submit a PR to nixpkgs to improve setupcfg2nix. Particularly it doesn't understand tests_require which you can list dependencies to run unit tests. Nix has equivalent checkDepends.