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{ lib
, buildPythonPackage
, fetchPypi
, pythonOlder

# build-system
, flit-core

# dependencies
, blinker
, click
, importlib-metadata
, itsdangerous
, jinja2
, werkzeug

# optional-dependencies
, asgiref
, python-dotenv

# tests
, greenlet
, pytestCheckHook

# reverse dependencies
, flask-limiter
, flask-restful
, flask-restx
, moto
}:

buildPythonPackage rec {
  pname = "flask";
  version = "3.0.3";
  format = "pyproject";

  src = fetchPypi {
    inherit pname version;
    hash = "sha256-zrJ7CvOCPqJzeSik2Z0SWgYXW4USxEXL2anOIA73aEI=";
  };

  nativeBuildInputs = [
    flit-core
  ];

  propagatedBuildInputs = [
    click
    blinker
    itsdangerous
    jinja2
    werkzeug
  ] ++ lib.optionals (pythonOlder "3.10") [
    importlib-metadata
  ];

  passthru.optional-dependencies = {
    async = [
      asgiref
    ];
    dotenv = [
      python-dotenv
    ];
  };

  nativeCheckInputs = [
    pytestCheckHook
  ] ++ lib.optionals (pythonOlder "3.11") [
    greenlet
  ] ++ lib.flatten (builtins.attrValues passthru.optional-dependencies);

  passthru.tests = {
    inherit flask-limiter flask-restful flask-restx moto;
  };

  meta = with lib; {
    changelog = "https://flask.palletsprojects.com/en/${versions.majorMinor version}.x/changes/#version-${replaceStrings [ "." ] [ "-" ] version}";
    homepage = "https://flask.palletsprojects.com/";
    description = "The Python micro framework for building web applications";
    mainProgram = "flask";
    longDescription = ''
      Flask is a lightweight WSGI web application framework. It is
      designed to make getting started quick and easy, with the ability
      to scale up to complex applications. It began as a simple wrapper
      around Werkzeug and Jinja and has become one of the most popular
      Python web application frameworks.
    '';
    license = licenses.bsd3;
    maintainers = with maintainers; [ nickcao ];
  };
}