{
  lib,
  fetchFromGitHub,
  python3,
}:

python3.pkgs.buildPythonPackage rec {
  pname = "mypy";
  # This is the version oils-for-unix uses for mycpp Python-to-C++ translation
  version = "0.780";

  src = fetchFromGitHub {
    owner = "python";
    repo = "mypy";
    rev = "v${version}";
    # Fetch submodules to include typeshed (required for type stubs)
    fetchSubmodules = true;
    hash = "sha256-czwCx6ZjCu3CrVmbI6NbstzWM0GvuPTWJiiUhXSznu4=";
  };

  # Do not use mypyc to compile.
  # Rather, build interpreted so mycpp can extend its classes.
  preBuild = ''
    export MYPY_USE_MYPYC=0
  '';

  # Skip tests to speed up build
  doCheck = false;

  dependencies = with python3.pkgs; [
    mypy-extensions
    typing-extensions
    typed-ast
  ];

  # Ensure we're not pulling in a compiled version
  pythonImportsCheck = [ "mypy" ];

  meta.license = lib.licenses.mit;
}