let
  pkgs = import <nixpkgs> { };
in

self: super: rec {
  python39 = super.python39.override {
    packageOverrides = python-self: python-super: {
      graphql-core = python-super.buildPythonPackage rec {
        pname = "graphql-core";
          version = "3.2.0";
          format = "setuptools";
          src = python-super.fetchPypi {
            inherit pname version;
            sha256 = "sha256-huKgvgCL/eGe94OI3opyWh2UKpGQykMcJKYIN5c4A84=";
          };
          checkInputs = [
            python-super.pytest-asyncio
            python-super.pytest-benchmark
            python-super.pytestCheckHook
          ];
          pythonImportsCheck = [
            "graphql"
          ];
      };
      starlette = python-super.buildPythonPackage rec {
        pname = "starlette";
          version = "0.19.0";
          format = "setuptools";
          src = fetchFromGitHub {
            owner = "encode";
            repo = pname;
            rev = version;
            sha256 = "sha256-gjRTMzoQ8pqxjIusRwRXGs72VYo6xsp2DSUxmEr9KxU=";
          };
          postPatch = ''
            # remove coverage arguments to pytest
            sed -i '/--cov/d' setup.cfg
          '';

          propagatedBuildInputs = with self.python39Packages; [
            aiofiles
            anyio
            itsdangerous
            jinja2
            python-multipart
            pyyaml
            requests
          ];

          checkInputs = with self.python39Packages; [
            aiosqlite
            databases
            pytestCheckHook
            trio
            typing-extensions
          ];

          disabledTests = [
            # asserts fail due to inclusion of br in Accept-Encoding
            "test_websocket_headers"
            "test_request_headers"
          ];

          pythonImportsCheck = [
            "starlette"
          ];
      };
      fastapi = python-super.buildPythonPackage rec {
        pname = "fastapi";
          version = "0.75.2";
          format = "flit";
          src = fetchFromGitHub {
            owner = "tiangolo";
            repo = pname;
            rev = version;
            hash = "sha256-B4q3Q256Sj4jTQt1TDm3fiEaQKdVxddCF9+KsxkkTWo=";
          };
          propagatedBuildInputs = with self.python39Packages;  [
            starlette
            pydantic
          ];

          checkInputs = with self.python39Packages; [
            aiosqlite
            databases
            flask
            httpx
            passlib
            peewee
            python-jose
            pytestCheckHook
            pytest-asyncio
            sqlalchemy
            trio
            bcrypt
          ];

          patches = [
            # Bump starlette, https://github.com/tiangolo/fastapi/pull/4483
            (fetchpatch {
              name = "support-later-starlette.patch";
              # PR contains multiple commits
              url = "https://patch-diff.githubusercontent.com/raw/tiangolo/fastapi/pull/4483.patch";
              sha256 = "sha256-ZWaqAd/QYEYRL1hSQdXdFPgWgdmOill2GtmEn33vz2U=";
            })
          ];

          postPatch = ''
            substituteInPlace pyproject.toml \
              --replace "starlette ==" "starlette >="
          '';

          pytestFlagsArray = [
            # ignoring deprecation warnings to avoid test failure from
            # tests/test_tutorial/test_testing/test_tutorial001.py
            "-W ignore::DeprecationWarning"
          ];

          disabledTestPaths = [
            # Disabled tests require orjson which requires rust nightly
            "tests/test_default_response_class.py"
            # Don't test docs and examples
            "docs_src"
          ];

          disabledTests = [
            "test_get_custom_response"
            # Failed: DID NOT RAISE <class 'starlette.websockets.WebSocketDisconnect'>
            "test_websocket_invalid_data"
            "test_websocket_no_credentials"
            # TypeError: __init__() missing 1...starlette-releated
            "test_head"
            "test_options"
            "test_trace"
          ];

          pythonImportsCheck = [
            "fastapi"
          ];
      };
      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 {
    nixpkgs = pkgs;
    pythonPkgs = pythonPackages;
  };
  selfprivacy-graphql-api = super.callPackage ./pkgs/selfprivacy-graphql-api {
    nixpkgs = pkgs;
    pythonPkgs = pythonPackages;
  };
}