{ lib , buildPythonPackage , fetchPypi , stdenv , libcxx , cppy , setuptools-scm , pythonOlder }: buildPythonPackage rec { pname = "kiwisolver"; version = "1.4.2"; format = "setuptools"; disabled = pythonOlder "3.7"; src = fetchPypi { inherit pname version; hash = "sha256-f2BtkbiogWvkdlE6d/0wq+ZiJwOb1vi0BsNIywJH3Mk="; }; NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin [ "-I${lib.getDev libcxx}/include/c++/v1" ]; nativeBuildInputs = [ setuptools-scm ]; buildInputs = [ cppy ]; pythonImportsCheck = [ "kiwisolver" ]; meta = with lib; { description = "Implementation of the Cassowary constraint solver"; homepage = "https://github.com/nucleic/kiwi"; license = licenses.bsd3; maintainers = with maintainers; [ ]; }; }