let
  pkgs = import <nixpkgs> { };
in

self: super: rec {
  python39 = super.python39.override {
    packageOverrides = python-self: python-super: {
      strawberry_graphql = python-super.buildPythonPackage rec {
        pname = "strawberry-graphql";
        version = "0.123.0";
        format = "pyproject";
        patches = [
          ./strawberry-graphql.patch
        ];
        propagatedBuildInputs = with self.python39Packages; [
          typing-extensions
          graphql-core
          python-multipart
          python-dateutil
          flask
          pydantic
          pygments
          poetry
        ];
        src = python-super.fetchPypi {
          inherit pname version;
          sha256 = "sha256-KsmZ5Xv8tUg6yBxieAEtvoKoRG60VS+iVGV0X6oCExo=";
        };
      };
    };
  };
  pythonPackages = python39.pkgs;
  selfprivacy-api = super.callPackage ./pkgs/selfprivacy-api {};
  selfprivacy-graphql-api = super.callPackage ./pkgs/selfprivacy-graphql-api {
    nixpkgs = pkgs;
    pythonPkgs = pythonPackages;
  };
}