python3Packages.preggy: pin to pytest 8.3, modernize

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

@@ -2,27 +2,30 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  setuptools,
   six,
   unidecode,
-  pytestCheckHook,
+  pytest8_3CheckHook,
 }:
 
 buildPythonPackage rec {
   pname = "preggy";
   version = "1.4.4";
-  format = "setuptools";
-
-  propagatedBuildInputs = [
-    six
-    unidecode
-  ];
-  nativeCheckInputs = [ pytestCheckHook ];
+  pyproject = true;
 
   src = fetchPypi {
     inherit pname version;
     sha256 = "25ba803afde4f35ef543a60915ced2e634926235064df717c3cb3e4e3eb4670c";
   };
 
+  build-system = [ setuptools ];
+
+  dependencies = [
+    six
+    unidecode
+  ];
+  nativeCheckInputs = [ pytest8_3CheckHook ];
+
   meta = with lib; {
     description = "Assertion library for Python";
     homepage = "http://heynemann.github.io/preggy/";