ghstack: modernize

Signed-off-by: Ethan Carter Edwards <ethan@ethancedwards.com>

pkgs/by-name/gh/ghstack/package.nix

@@ -1,14 +1,18 @@
 {
   lib,
-  python3,
+  python3Packages,
   fetchFromGitHub,
+  versionCheckHook,
+  writableTmpDirAsHomeHook,
 }:
 
-python3.pkgs.buildPythonApplication (finalAttrs: {
+python3Packages.buildPythonApplication (finalAttrs: {
   pname = "ghstack";
   version = "0.13.0";
   pyproject = true;
 
+  __structuredAttrs = true;
+
   src = fetchFromGitHub {
     owner = "ezyang";
     repo = "ghstack";
@@ -21,9 +25,9 @@ python3.pkgs.buildPythonApplication (finalAttrs: {
       --replace-fail 'requires = ["uv_build>=0.6,<0.7"]' 'requires = ["uv_build>=0.6"]'
   '';
 
-  build-system = [ python3.pkgs.uv-build ];
+  build-system = [ python3Packages.uv-build ];
 
-  dependencies = with python3.pkgs; [
+  dependencies = with python3Packages; [
     aiohttp
     click
     flake8
@@ -34,6 +38,14 @@ python3.pkgs.buildPythonApplication (finalAttrs: {
 
   pythonImportsCheck = [ "ghstack.cli" ];
 
+  # pytests require sqlite db access
+
+  versionCheckKeepEnvironment = [ "HOME" ];
+  nativeCheckInputs = [
+    versionCheckHook
+    writableTmpDirAsHomeHook
+  ];
+
   meta = {
     description = "Submit stacked diffs to GitHub on the command line";
     homepage = "https://github.com/ezyang/ghstack";