{
  lib,
  stdenv,
  buildPythonPackage,
  fetchzip,
  pkg-config,
  dbus,
  lndir,
  dbus-python,
  sip,
  pyqt6-sip,
  pyqt-builder,
  qt6Packages,
  pythonOlder,
  mesa,
  withMultimedia ? true,
  withWebSockets ? true,
  withLocation ? true,
  # Not currently part of PyQt6
  #, withConnectivity ? true
  withPrintSupport ? true,
  withSerialPort ? false,
  cups,
}:

buildPythonPackage rec {
  pname = "pyqt6";
  version = "6.9.0";
  pyproject = true;

  disabled = pythonOlder "3.9";

  # It looks like a stable release, but is it? Who knows.
  # It's not on PyPI proper yet, at least, and the current
  # actually-released version does not build with Qt 6.9,
  # so we kinda have to use it.
  # "ffs smdh fam" - K900
  src = fetchzip {
    url = "https://web.archive.org/web/20250406083944/https://www.riverbankcomputing.com/pypi/packages/PyQt6/pyqt6-6.9.0.tar.gz";
    hash = "sha256-UZSbz6MqdNtl2r4N8uvgNjQ+28KCzNFb5yFqPcooT5E=";
  };

  patches = [
    # Fix some wrong assumptions by ./project.py
    # TODO: figure out how to send this upstream
    ./pyqt6-fix-dbus-mainloop-support.patch
    # confirm license when installing via pyqt6_sip
    ./pyqt5-confirm-license.patch
  ];

  build-system = [
    sip
    pyqt-builder
  ];

  dependencies = [
    pyqt6-sip
    dbus-python
  ];

  # be more verbose
  # and normalize version
  postPatch = ''
    cat >> pyproject.toml <<EOF
    [tool.sip.project]
    verbose = true
    EOF

    substituteInPlace pyproject.toml \
      --replace-fail 'version = "${version}"' 'version = "${lib.versions.pad 3 version}"'
  '';

  enableParallelBuilding = true;
  # HACK: paralellize compilation of make calls within pyqt's setup.py
  # pkgs/stdenv/generic/setup.sh doesn't set this for us because
  # make gets called by python code and not its build phase
  # format=pyproject means the pip-build-hook hook gets used to build this project
  # pkgs/development/interpreters/python/hooks/pip-build-hook.sh
  # does not use the enableParallelBuilding flag
  postUnpack = ''
    export MAKEFLAGS+="''${enableParallelBuilding:+-j$NIX_BUILD_CORES}"
  '';

  outputs = [
    "out"
    "dev"
  ];

  dontWrapQtApps = true;

  nativeBuildInputs =
    with qt6Packages;
    [
      pkg-config
      lndir
      qtbase
      qtsvg
      qtdeclarative
      qtwebchannel
      qmake
      qtquick3d
      qtquicktimeline
    ]
    # ++ lib.optional withConnectivity qtconnectivity
    ++ lib.optional withMultimedia qtmultimedia
    ++ lib.optional withWebSockets qtwebsockets
    ++ lib.optional withLocation qtlocation
    ++ lib.optional withSerialPort qtserialport;

  buildInputs =
    with qt6Packages;
    [
      dbus
      qtbase
      qtsvg
      qtdeclarative
      qtquick3d
      qtquicktimeline
    ]
    # ++ lib.optional withConnectivity qtconnectivity
    ++ lib.optional withMultimedia qtmultimedia
    ++ lib.optional withWebSockets qtwebsockets
    ++ lib.optional withLocation qtlocation
    ++ lib.optional withSerialPort qtserialport;

  propagatedBuildInputs =
    # ld: library not found for -lcups
    lib.optionals (withPrintSupport && stdenv.hostPlatform.isDarwin) [ cups ];

  passthru = {
    inherit sip pyqt6-sip;
    multimediaEnabled = withMultimedia;
    WebSocketsEnabled = withWebSockets;
    serialPortEnabled = withSerialPort;
  };

  dontConfigure = true;

  # Checked using pythonImportsCheck, has no tests

  pythonImportsCheck = [
    "PyQt6"
    "PyQt6.QtCore"
    "PyQt6.QtQml"
    "PyQt6.QtWidgets"
    "PyQt6.QtGui"
    "PyQt6.QtQuick"
  ]
  ++ lib.optional withWebSockets "PyQt6.QtWebSockets"
  ++ lib.optional withMultimedia "PyQt6.QtMultimedia"
  # ++ lib.optional withConnectivity "PyQt6.QtConnectivity"
  ++ lib.optional withLocation "PyQt6.QtPositioning"
  ++ lib.optional withSerialPort "PyQt6.QtSerialPort";

  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isDarwin "-Wno-address-of-temporary";

  meta = with lib; {
    description = "Python bindings for Qt6";
    homepage = "https://riverbankcomputing.com/";
    license = licenses.gpl3Only;
    inherit (mesa.meta) platforms;
    maintainers = with maintainers; [ LunNova ];
  };
}