diff --git a/pkgs/development/python-modules/fabulous/default.nix b/pkgs/development/python-modules/fabulous/default.nix
index 075f01ee64061..d94227989c490 100644
--- a/pkgs/development/python-modules/fabulous/default.nix
+++ b/pkgs/development/python-modules/fabulous/default.nix
@@ -2,14 +2,16 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  fetchpatch2,
   pillow,
+  setuptools,
   python,
 }:
 
 buildPythonPackage rec {
   pname = "fabulous";
   version = "0.4.0";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "jart";
@@ -18,9 +20,18 @@ buildPythonPackage rec {
     hash = "sha256-hchlxuB5QP+VxCx+QZ2739/mR5SQmYyE+9kXLKJ2ij4=";
   };
 
-  patches = [ ./relative_import.patch ];
+  patches = [
+    ./relative_import.patch
+    # https://github.com/jart/fabulous/pull/22
+    (fetchpatch2 {
+      url = "https://github.com/jart/fabulous/commit/5779f2dfbc88fd81b5b5865247913d4775e67959.patch?full_index=1";
+      hash = "sha256-miWFt4vDpwWhSUgnWDjWUXoibijcDa1c1dDOSkfWoUg=";
+    })
+  ];
 
-  propagatedBuildInputs = [ pillow ];
+  build-system = [ setuptools ];
+
+  dependencies = [ pillow ];
 
   checkPhase = ''
     for i in tests/*.py; do
@@ -28,10 +39,10 @@ buildPythonPackage rec {
     done
   '';
 
-  meta = with lib; {
+  meta = {
     description = "Make the output of terminal applications look fabulous";
     homepage = "https://jart.github.io/fabulous";
-    license = licenses.asl20;
-    maintainers = [ maintainers.symphorien ];
+    license = lib.licenses.asl20;
+    maintainers = [ lib.maintainers.symphorien ];
   };
 }
diff --git a/pkgs/development/python-modules/pypillowfight/default.nix b/pkgs/development/python-modules/pypillowfight/default.nix
index 601db553cf5eb..8c001b7ebf82c 100644
--- a/pkgs/development/python-modules/pypillowfight/default.nix
+++ b/pkgs/development/python-modules/pypillowfight/default.nix
@@ -2,44 +2,39 @@
   lib,
   buildPythonPackage,
   fetchFromGitLab,
-  nose,
   pillow,
-  isPy3k,
-  isPyPy,
+  pytestCheckHook,
+  setuptools,
 }:
 buildPythonPackage rec {
   pname = "pypillowfight";
-  version = "0.3.0";
-  format = "setuptools";
+  version = "0.3.0-unstable-2024-07-07";
+  pyproject = true;
 
   src = fetchFromGitLab {
     domain = "gitlab.gnome.org";
     group = "World";
     owner = "OpenPaperwork";
     repo = "libpillowfight";
-    rev = version;
-    sha256 = "096242v425mlqqj5g1giy59p7grxp05g78w6bk37vzph98jrgv3w";
+    # Currently no tagged release past 0.3.0 and we need these patches to fix Python 3.12 compat
+    rev = "4d5f739b725530cd61e709071d31e9f707c64bd6";
+    hash = "sha256-o5FzUSDq0lwkXGXRMsS5NB/Mp4Ie833wkxKPziR23f4=";
   };
 
   prePatch = ''
     echo '#define INTERNAL_PILLOWFIGHT_VERSION "${version}"' > src/pillowfight/_version.h
   '';
 
-  # Disable tests because they're designed to only work on Debian:
-  # https://github.com/jflesch/libpillowfight/issues/2#issuecomment-268259174
-  doCheck = false;
+  build-system = [ setuptools ];
 
-  # Python 2.x is not supported, see:
-  # https://github.com/jflesch/libpillowfight/issues/1
-  disabled = !isPy3k && !isPyPy;
+  dependencies = [ pillow ];
 
-  # This is needed by setup.py regardless of whether tests are enabled.
-  buildInputs = [ nose ];
-  propagatedBuildInputs = [ pillow ];
+  nativeCheckInputs = [ pytestCheckHook ];
 
-  meta = with lib; {
+  meta = {
     description = "Library containing various image processing algorithms";
     inherit (src.meta) homepage;
-    license = licenses.gpl3Plus;
+    license = lib.licenses.gpl3Plus;
+    maintainers = with lib.maintainers; [ pyrox0 ];
   };
 }