python3Packages.utils: migrate to pyproject (#542080)

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

@@ -2,22 +2,27 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  setuptools,
   mock,
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "utils";
   version = "1.0.1";
-  format = "setuptools";
+  pyproject = true;
+
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "haaksmash";
     repo = "pyutils";
-    rev = version;
-    sha256 = "07pr39cfw5ayzkp6h53y7lfpd0w19pphsdzsf100fsyy3npavgbr";
+    tag = finalAttrs.version;
+    hash = "sha256-eb2trh3eawdAcPo3De9NgYN2HT1+FGju/F4V7lga+R4=";
   };
 
+  build-system = [ setuptools ];
+
   nativeCheckInputs = [
     mock
     pytestCheckHook
@@ -31,4 +36,4 @@ buildPythonPackage rec {
     license = with lib.licenses; [ lgpl3Only ];
     maintainers = with lib.maintainers; [ fab ];
   };
-}
+})