python3Packages.utils: modernize

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

@@ -7,16 +7,18 @@
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "utils";
   version = "1.0.1";
   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 ];
@@ -34,4 +36,4 @@ buildPythonPackage rec {
     license = with lib.licenses; [ lgpl3Only ];
     maintainers = with lib.maintainers; [ fab ];
   };
-}
+})