Merge pull request #287112 from dotlambda/dateutil-python312

python311Packages.python-dateutil: avoid DeprecationWarning on Python 3.12

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

@@ -1,6 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchPypi
+, fetchpatch
 , setuptools-scm
 , six
 }:
@@ -14,6 +15,15 @@ buildPythonPackage rec {
     hash = "sha256-ASPKzBYnrhnd88J6XeW9Z+5FhvvdZEDZdI+Ku0g9PoY=";
   };
 
+  patches = [
+    # https://github.com/dateutil/dateutil/pull/1285
+    (fetchpatch {
+      url = "https://github.com/dateutil/dateutil/commit/f2293200747fb03d56c6c5997bfebeabe703576f.patch";
+      relative = "src";
+      hash = "sha256-BVEFGV/WGUz9H/8q+l62jnyN9VDnoSR71DdL+LIkb0o=";
+    })
+  ];
+
   nativeBuildInputs = [ setuptools-scm ];
 
   propagatedBuildInputs = [ six ];