nixpkgs/pkgs/development/python-modules/mypy/extensions.nix

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{ stdenv, fetchPypi, buildPythonPackage, typing, pythonOlder }:
buildPythonPackage rec {
pname = "mypy_extensions";
version = "0.4.1";
# Tests not included in pip package.
doCheck = false;
src = fetchPypi {
inherit pname version;
sha256 = "04h8brrbbx151dfa2cvvlnxgmb5wa00mhd2z7nd20s8kyibfkq1p";
};
propagatedBuildInputs = if pythonOlder "3.5" then [ typing ] else [ ];
meta = with stdenv.lib; {
description = "Experimental type system extensions for programs checked with the mypy typechecker";
homepage = "http://www.mypy-lang.org";
license = licenses.mit;
maintainers = with maintainers; [ martingms lnl7 ];
};
}