diff --git a/pkgs/development/python-modules/audio-metadata/default.nix b/pkgs/development/python-modules/audio-metadata/default.nix
index d1d6de0bcba8..e9be3715ec31 100644
--- a/pkgs/development/python-modules/audio-metadata/default.nix
+++ b/pkgs/development/python-modules/audio-metadata/default.nix
@@ -1,28 +1,29 @@
-{ lib
-, attrs
-, bidict
-, bitstruct
-, buildPythonPackage
-, fetchFromGitHub
-, fetchpatch
-, more-itertools
-, poetry-core
-, pprintpp
-, pythonOlder
-, pythonRelaxDepsHook
-, tbm-utils
+{
+  lib,
+  attrs,
+  bidict,
+  bitstruct,
+  buildPythonPackage,
+  fetchFromGitHub,
+  fetchpatch,
+  more-itertools,
+  poetry-core,
+  pprintpp,
+  pythonOlder,
+  pythonRelaxDepsHook,
+  tbm-utils,
 }:
 
 buildPythonPackage rec {
   pname = "audio-metadata";
   version = "0.11.1";
-  format = "pyproject";
+  pyproject = true;
 
   disabled = pythonOlder "3.7";
 
   src = fetchFromGitHub {
     owner = "thebigmunch";
-    repo = pname;
+    repo = "audio-metadata";
     rev = "refs/tags/${version}";
     hash = "sha256-5ZX4HwbuB9ZmFfHuxaMCrn3R7/znuDsoyqqLql2Nizg=";
   };
@@ -41,12 +42,11 @@ buildPythonPackage rec {
     "more-itertools"
   ];
 
-  nativeBuildInputs = [
-    poetry-core
-    pythonRelaxDepsHook
-  ];
+  build-system = [ poetry-core ];
 
-  propagatedBuildInputs = [
+  nativeBuildInputs = [ pythonRelaxDepsHook ];
+
+  dependencies = [
     attrs
     bidict
     bitstruct
@@ -58,13 +58,11 @@ buildPythonPackage rec {
   # Tests require ward which is not ready to be used
   doCheck = false;
 
-  pythonImportsCheck = [
-    "audio_metadata"
-  ];
+  pythonImportsCheck = [ "audio_metadata" ];
 
   meta = with lib; {
+    description = "Library for handling the metadata from audio files";
     homepage = "https://github.com/thebigmunch/audio-metadata";
-    description = "A library for reading and, in the future, writing metadata from audio files";
     changelog = "https://github.com/thebigmunch/audio-metadata/blob/${version}/CHANGELOG.md";
     license = licenses.mit;
     maintainers = with maintainers; [ jakewaksbaum ];
diff --git a/pkgs/development/python-modules/pprintpp/default.nix b/pkgs/development/python-modules/pprintpp/default.nix
index c0f98eca75e1..0e058cab0560 100644
--- a/pkgs/development/python-modules/pprintpp/default.nix
+++ b/pkgs/development/python-modules/pprintpp/default.nix
@@ -1,17 +1,20 @@
-{ lib
-, buildPythonPackage
-, fetchpatch
-, fetchPypi
-, nose
-, parameterized
-, python
-, pythonOlder
+{
+  lib,
+  buildPythonPackage,
+  fetchpatch,
+  fetchPypi,
+  parameterized,
+  pytestCheckHook,
+  pynose,
+  python,
+  pythonOlder,
+  setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "pprintpp";
   version = "0.4.0";
-  format = "setuptools";
+  pyproject = true;
 
   disabled = pythonOlder "3.7";
 
@@ -34,25 +37,31 @@ buildPythonPackage rec {
     })
   ];
 
+  build-system = [ setuptools ];
+
   nativeCheckInputs = [
-    nose
     parameterized
+    pynose
+    pytestCheckHook
   ];
 
-  checkPhase = ''
-    ${python.interpreter} test.py
-  '';
+  pythonImportsCheck = [ "pprintpp" ];
 
-  pythonImportsCheck = [
-    "pprintpp"
+  pytestFlagsArray = [ "test.py" ];
+
+  disabledTests = [
+    # AttributeError: 'EncodedFile' object has no attribute 'getvalue'
+    "test_pp"
+    "test_pp_pprint"
+    "test_fmt"
   ];
 
   meta = with lib; {
     description = "A drop-in replacement for pprint that's actually pretty";
-    mainProgram = "pypprint";
     homepage = "https://github.com/wolever/pprintpp";
     changelog = "https://github.com/wolever/pprintpp/blob/${version}/CHANGELOG.txt";
     license = licenses.bsd2;
     maintainers = with maintainers; [ jakewaksbaum ];
+    mainProgram = "pypprint";
   };
 }
diff --git a/pkgs/development/python-modules/tbm-utils/default.nix b/pkgs/development/python-modules/tbm-utils/default.nix
index 4fa46defe2cb..7f4963ca6dba 100644
--- a/pkgs/development/python-modules/tbm-utils/default.nix
+++ b/pkgs/development/python-modules/tbm-utils/default.nix
@@ -1,38 +1,58 @@
-{ stdenv
-, lib
-, buildPythonPackage
-, fetchFromGitHub
-, attrs
-, pendulum
-, poetry-core
-, pprintpp
-, pytestCheckHook
-, pythonRelaxDepsHook
-, wrapt
+{
+  lib,
+  stdenv,
+  attrs,
+  buildPythonPackage,
+  fetchFromGitHub,
+  fetchpatch,
+  pendulum,
+  poetry-core,
+  pprintpp,
+  pytestCheckHook,
+  pythonOlder,
+  pythonRelaxDepsHook,
+  wrapt,
 }:
 
 buildPythonPackage rec {
   pname = "tbm-utils";
   version = "2.6.0";
-  format = "pyproject";
+  pyproject = true;
+
+  disabled = pythonOlder "3.9";
 
   src = fetchFromGitHub {
     owner = "thebigmunch";
-    repo = pname;
+    repo = "tbm-utils";
     rev = "refs/tags/${version}";
     hash = "sha256-AEKawsAxDSDNkIaXEFFgdEBOY2PpASDrhlDrsnM5eyA=";
   };
 
+  patches = [
+    # Migrate to pendulum > 3, https://github.com/thebigmunch/tbm-utils/pull/3
+    (fetchpatch {
+      name = "support-pendulum-3.patch";
+      url = "https://github.com/thebigmunch/tbm-utils/commit/473534fae2d9a8dea9100cead6c54cab3f5cd0cd.patch";
+      hash = "sha256-3T0KhSmO9r1vM67FWEnTZMQV4b5jS2xtPHI0t9NnCmI=";
+    })
+    (fetchpatch {
+      name = "update-testsupport-pendulum-3.patch";
+      url = "https://github.com/thebigmunch/tbm-utils/commit/a0331d0c15f11cd26bfbb42eebd17296167161ed.patch";
+      hash = "sha256-KG6yfnnBltavbNvIBTdbK+CPXwZTLYl14925RY2a8vs=";
+    })
+  ];
+
   postPatch = ''
     substituteInPlace pyproject.toml \
-      --replace 'poetry>=1.0.0' 'poetry-core' \
-      --replace 'poetry.masonry.api' 'poetry.core.masonry.api'
+      --replace-fail 'poetry>=1.0.0' 'poetry-core' \
+      --replace-fail 'poetry.masonry.api' 'poetry.core.masonry.api'
   '';
 
-  nativeBuildInputs = [
-    poetry-core
-    pythonRelaxDepsHook
-  ];
+  pythonRelaxDeps = [ "attrs" ];
+
+  build-system = [ poetry-core ];
+
+  nativeBuildInputs = [ pythonRelaxDepsHook ];
 
   propagatedBuildInputs = [
     attrs
@@ -41,13 +61,7 @@ buildPythonPackage rec {
     wrapt
   ];
 
-  pythonRelaxDeps = [
-    "attrs"
-  ];
-
-  nativeCheckInputs = [
-    pytestCheckHook
-  ];
+  nativeCheckInputs = [ pytestCheckHook ];
 
   disabledTests = lib.optionals stdenv.isDarwin [
     # Skip on macOS because /etc/localtime is accessed through the pendulum
@@ -63,14 +77,13 @@ buildPythonPackage rec {
     "tests/test_misc.py"
   ];
 
-  pythonImportsCheck = [
-    "tbm_utils"
-  ];
+  pythonImportsCheck = [ "tbm_utils" ];
 
-  meta = {
+  meta = with lib; {
     description = "A commonly-used set of utilities";
     homepage = "https://github.com/thebigmunch/tbm-utils";
     changelog = "https://github.com/thebigmunch/tbm-utils/blob/${version}/CHANGELOG.md";
-    license = [ lib.licenses.mit ];
+    license = licenses.mit;
+    maintainers = with maintainers; [ ];
   };
 }
diff --git a/pkgs/development/python-modules/ward/default.nix b/pkgs/development/python-modules/ward/default.nix
index f73cae95e25e..b1f7345f8413 100644
--- a/pkgs/development/python-modules/ward/default.nix
+++ b/pkgs/development/python-modules/ward/default.nix
@@ -9,35 +9,29 @@
 , poetry-core
 , pprintpp
 , pythonOlder
-, pythonRelaxDepsHook
 , rich
 , tomli
 }:
 
 buildPythonPackage rec {
   pname = "ward";
-  version = "0.67.0b0";
-  format = "pyproject";
+  version = "0.68.0b0";
+  pyproject = true;
 
   disabled = pythonOlder "3.8";
 
   src = fetchFromGitHub {
     owner = "darrenburns";
-    repo = pname;
+    repo = "ward";
     rev = "refs/tags/release%2F${version}";
     hash = "sha256-4dEMEEPySezgw3dIcYMl56HrhyaYlql9JvtamOn7Y8g=";
   };
 
-  pythonRelaxDeps = [
-    "rich"
-  ];
-
-  nativeBuildInputs = [
+  build-system = [
     poetry-core
-    pythonRelaxDepsHook
   ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     click
     rich
     tomli
@@ -57,10 +51,10 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "Test framework for Python";
-    mainProgram = "ward";
     homepage = "https://github.com/darrenburns/ward";
     changelog = "https://github.com/darrenburns/ward/releases/tag/release%2F${version}";
     license = licenses.mit;
     maintainers = with maintainers; [ fab ];
+    mainProgram = "ward";
   };
 }