From 2343ecee633d3f6b0493c86174b79cfdf6516cb6 Mon Sep 17 00:00:00 2001
From: SkohTV <contact@skoh.dev>
Date: Mon, 25 May 2026 11:11:37 -0400
Subject: [PATCH] python3Packages.visitor: migrate to pyproject

---
 pkgs/development/python-modules/visitor/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/python-modules/visitor/default.nix b/pkgs/development/python-modules/visitor/default.nix
index 727703ca1556..c37c3f8abccc 100644
--- a/pkgs/development/python-modules/visitor/default.nix
+++ b/pkgs/development/python-modules/visitor/default.nix
@@ -2,18 +2,21 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "visitor";
   version = "0.1.3";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchPypi {
     inherit pname version;
     sha256 = "02j87v93c50gz68gbgclmbqjcwcr7g7zgvk7c6y4x1mnn81pjwrc";
   };
 
+  build-system = [ setuptools ];
+
   meta = {
     homepage = "https://github.com/mbr/visitor";
     description = "Tiny pythonic visitor implementation";