From 05159f203376797404189519da8209f6576388c2 Mon Sep 17 00:00:00 2001
From: Harinn <prinn.dev@pm.me>
Date: Mon, 7 Sep 2026 18:39:20 +0700
Subject: [PATCH 1/2] python3Packages.daff: migrate to pyproject

As part of https://github.com/NixOS/nixpkgs/issues/515974
---
 pkgs/development/python-modules/daff/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/python-modules/daff/default.nix b/pkgs/development/python-modules/daff/default.nix
index fe2cdb94db0d..2984043b81b9 100644
--- a/pkgs/development/python-modules/daff/default.nix
+++ b/pkgs/development/python-modules/daff/default.nix
@@ -2,18 +2,21 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "daff";
   version = "1.4.2";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchPypi {
     inherit pname version;
     hash = "sha256-R/A5Htp+K1AR98ysAGuReKzLRlvLlKLJ8oQlf/9dJoY=";
   };
 
+  build-system = [ setuptools ];
+
   # there are no tests
   doCheck = false;
 

From c17a8b3102d477e48f50cc0debdc2f71a53bf350 Mon Sep 17 00:00:00 2001
From: Harinn <prinn.dev@pm.me>
Date: Mon, 7 Sep 2026 18:39:20 +0700
Subject: [PATCH 2/2] python3Packages.daff: modernize

---
 pkgs/development/python-modules/daff/default.nix | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/python-modules/daff/default.nix b/pkgs/development/python-modules/daff/default.nix
index 2984043b81b9..239b46660a09 100644
--- a/pkgs/development/python-modules/daff/default.nix
+++ b/pkgs/development/python-modules/daff/default.nix
@@ -5,13 +5,15 @@
   setuptools,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "daff";
   version = "1.4.2";
   pyproject = true;
 
+  __structuredAttrs = true;
+
   src = fetchPypi {
-    inherit pname version;
+    inherit (finalAttrs) pname version;
     hash = "sha256-R/A5Htp+K1AR98ysAGuReKzLRlvLlKLJ8oQlf/9dJoY=";
   };
 
@@ -28,4 +30,4 @@ buildPythonPackage rec {
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ turion ];
   };
-}
+})