python3Packages.toposort: add setuptools to nativeBuildInputs

pkgs/development/python-modules/toposort/default.nix

@@ -1,6 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchPypi
+, setuptools
 }:
 
 buildPythonPackage rec {
@@ -13,6 +14,10 @@ buildPythonPackage rec {
     sha256 = "sha256-3cIYLEKRKkQFEb1/9dPmocq8Osy8Z0oyWMjEHL+7ISU=";
   };
 
+  nativeBuildInputs = [
+    setuptools
+  ];
+
   pythonImportsCheck = [
     "toposort"
   ];