python3Packages.throttler: modernize (#418575)

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

···
   buildPythonPackage,
   fetchFromGitHub,
   pytestCheckHook,
-  aiohttp,
-  flake8,
-  pytest,
   pytest-asyncio,
-  pytest-cov,
+  setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "throttler";
   version = "1.2.2";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "uburuntu";
···
     hash = "sha256-fE35zPjBUn4e1VRkkIUMtYJ/+LbnUxnxyfnU+UEPwr4=";
   };
 
+  build-system = [ setuptools ];
+
   checkInputs = [
-    aiohttp
-    flake8
-    pytest
     pytest-asyncio
-    pytest-cov
     pytestCheckHook
   ];
 
···
     "tests/test_execution_timer.py"
   ];
 
-  meta = with lib; {
+  meta = {
+    changelog = "https://github.com/uburuntu/throttler/releases/tag/${src.tag}";
     description = "Zero-dependency Python package for easy throttling with asyncio support";
     homepage = "https://github.com/uburuntu/throttler";
-    license = licenses.mit;
-    maintainers = with maintainers; [ renatoGarcia ];
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ renatoGarcia ];
   };
 }