diff --git a/pkgs/development/python-modules/git-dummy/default.nix b/pkgs/development/python-modules/git-dummy/default.nix
index 2fffa2d6e06c..156ab57fe99b 100644
--- a/pkgs/development/python-modules/git-dummy/default.nix
+++ b/pkgs/development/python-modules/git-dummy/default.nix
@@ -3,14 +3,20 @@
   stdenv,
   buildPythonPackage,
   fetchFromGitHub,
-  installShellFiles,
+
+  # build-system
   setuptools,
+
+  # dependencies
   gitpython,
-  typer,
   pydantic-settings,
+  typer,
+
+  # nativeBuildInputs
+  installShellFiles,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "git-dummy";
   version = "0.1.2";
   pyproject = true;
@@ -18,7 +24,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "initialcommit-com";
     repo = "git-dummy";
-    rev = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-viybxn2J7SO7NgSvjwlP+tgtm+H6QrACafIy82d9XEk=";
   };
 
@@ -26,8 +32,8 @@ buildPythonPackage rec {
 
   dependencies = [
     gitpython
-    typer
     pydantic-settings
+    typer
   ];
 
   nativeBuildInputs = [ installShellFiles ];
@@ -42,9 +48,11 @@ buildPythonPackage rec {
     '';
 
   meta = {
-    homepage = "https://github.com/initialcommit-com/git-dummy";
     description = "Generate dummy Git repositories populated with the desired number of commits, branches, and structure";
+    homepage = "https://github.com/initialcommit-com/git-dummy";
+    changelog = "https://github.com/initialcommit-com/git-dummy/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.gpl2Only;
     maintainers = with lib.maintainers; [ mathiassven ];
+    mainProgram = "git-dummy";
   };
-}
+})
diff --git a/pkgs/development/python-modules/shellingham/default.nix b/pkgs/development/python-modules/shellingham/default.nix
index 3b1694e7d02f..5731146598cf 100644
--- a/pkgs/development/python-modules/shellingham/default.nix
+++ b/pkgs/development/python-modules/shellingham/default.nix
@@ -2,12 +2,13 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  procps,
   setuptools,
   pytest-mock,
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "shellingham";
   version = "1.5.4";
   pyproject = true;
@@ -15,11 +16,18 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "sarugaku";
     repo = "shellingham";
-    tag = version;
+    tag = finalAttrs.version;
     hash = "sha256-xeBo3Ok+XPrHN4nQd7M8/11leSV/8z1f7Sj33+HFVtQ=";
   };
 
-  nativeBuildInputs = [ setuptools ];
+  postPatch = ''
+    substituteInPlace src/shellingham/posix/ps.py \
+      --replace-fail \
+        'cmd = ["ps",' \
+        'cmd = ["${lib.getExe' procps "ps"}",'
+  '';
+
+  build-system = [ setuptools ];
 
   nativeCheckInputs = [
     pytest-mock
@@ -31,8 +39,8 @@ buildPythonPackage rec {
   meta = {
     description = "Tool to detect the surrounding shell";
     homepage = "https://github.com/sarugaku/shellingham";
-    changelog = "https://github.com/sarugaku/shellingham/blob/${version}/CHANGELOG.rst";
+    changelog = "https://github.com/sarugaku/shellingham/blob/${finalAttrs.src.tag}/CHANGELOG.rst";
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [ mbode ];
   };
-}
+})