From 905da8fe31fb40a71415601d02cd83d14ff41e93 Mon Sep 17 00:00:00 2001
From: Timo Gottszky <timogottszky+git@gmail.com>
Date: Wed, 10 Jun 2026 15:24:02 +0200
Subject: [PATCH 1/4] python3Packages.demjson3: use finalAttrs

---
 pkgs/development/python-modules/demjson3/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/python-modules/demjson3/default.nix b/pkgs/development/python-modules/demjson3/default.nix
index 6a46dc56adee..6171bc3281c8 100644
--- a/pkgs/development/python-modules/demjson3/default.nix
+++ b/pkgs/development/python-modules/demjson3/default.nix
@@ -5,13 +5,13 @@
   python,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "demjson3";
   version = "3.0.6";
   format = "setuptools";
 
   src = fetchPypi {
-    inherit pname version;
+    inherit (finalAttrs) pname version;
     hash = "sha256-N8g7DG6wjSXe/IjfCipIddWKeAmpZQvW7uev2AU826w=";
   };
 
@@ -28,4 +28,4 @@ buildPythonPackage rec {
     license = lib.licenses.lgpl3Plus;
     maintainers = with lib.maintainers; [ fab ];
   };
-}
+})

From 45515764f3b0ba54ad4e0b2b2b7a1e037b8d7fe3 Mon Sep 17 00:00:00 2001
From: Timo Gottszky <timogottszky+git@gmail.com>
Date: Wed, 10 Jun 2026 15:25:56 +0200
Subject: [PATCH 2/4] python3Packages.demjson3: enable __structuredAttrs

---
 pkgs/development/python-modules/demjson3/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/python-modules/demjson3/default.nix b/pkgs/development/python-modules/demjson3/default.nix
index 6171bc3281c8..d365f9e95a2c 100644
--- a/pkgs/development/python-modules/demjson3/default.nix
+++ b/pkgs/development/python-modules/demjson3/default.nix
@@ -10,6 +10,8 @@ buildPythonPackage (finalAttrs: {
   version = "3.0.6";
   format = "setuptools";
 
+  __structuredAttrs = true;
+
   src = fetchPypi {
     inherit (finalAttrs) pname version;
     hash = "sha256-N8g7DG6wjSXe/IjfCipIddWKeAmpZQvW7uev2AU826w=";

From 43ce110e69ba8cbf79344e28300433bbb0c6b458 Mon Sep 17 00:00:00 2001
From: Timo Gottszky <timogottszky+git@gmail.com>
Date: Wed, 10 Jun 2026 15:27:05 +0200
Subject: [PATCH 3/4] python3Packages.demjson3: use pytestCheckHook

---
 pkgs/development/python-modules/demjson3/default.nix | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/python-modules/demjson3/default.nix b/pkgs/development/python-modules/demjson3/default.nix
index d365f9e95a2c..1b5b48755912 100644
--- a/pkgs/development/python-modules/demjson3/default.nix
+++ b/pkgs/development/python-modules/demjson3/default.nix
@@ -2,7 +2,7 @@
   lib,
   buildPythonPackage,
   fetchPypi,
-  python,
+  pytestCheckHook,
 }:
 
 buildPythonPackage (finalAttrs: {
@@ -17,9 +17,7 @@ buildPythonPackage (finalAttrs: {
     hash = "sha256-N8g7DG6wjSXe/IjfCipIddWKeAmpZQvW7uev2AU826w=";
   };
 
-  checkPhase = ''
-    ${python.interpreter} test/test_demjson3.py
-  '';
+  nativeCheckInputs = [ pytestCheckHook ];
 
   pythonImportsCheck = [ "demjson3" ];
 

From 43281640444498baa127b47ea337776fa2a7d12e Mon Sep 17 00:00:00 2001
From: Timo Gottszky <timogottszky+git@gmail.com>
Date: Wed, 10 Jun 2026 15:28:36 +0200
Subject: [PATCH 4/4] python3Packages.demjson3: migrate to pyproject

---
 pkgs/development/python-modules/demjson3/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/python-modules/demjson3/default.nix b/pkgs/development/python-modules/demjson3/default.nix
index 1b5b48755912..2c6101fa4d3b 100644
--- a/pkgs/development/python-modules/demjson3/default.nix
+++ b/pkgs/development/python-modules/demjson3/default.nix
@@ -3,12 +3,13 @@
   buildPythonPackage,
   fetchPypi,
   pytestCheckHook,
+  setuptools,
 }:
 
 buildPythonPackage (finalAttrs: {
   pname = "demjson3";
   version = "3.0.6";
-  format = "setuptools";
+  pyproject = true;
 
   __structuredAttrs = true;
 
@@ -17,6 +18,8 @@ buildPythonPackage (finalAttrs: {
     hash = "sha256-N8g7DG6wjSXe/IjfCipIddWKeAmpZQvW7uev2AU826w=";
   };
 
+  build-system = [ setuptools ];
+
   nativeCheckInputs = [ pytestCheckHook ];
 
   pythonImportsCheck = [ "demjson3" ];