python310Packages.babel: Fix tests, disable tests

Some tests required pytz, some tests are just broken two times a year
on days when EST is moving from and to daylight saving time.

Now with that out of the way, some general goodness towards the package.

pkgs/development/python-modules/babel/default.nix

@@ -1,8 +1,20 @@
-{ stdenv, lib, buildPythonPackage, fetchPypi, pythonOlder, pytz, pytestCheckHook, freezegun }:
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+
+# tests
+, backports-zoneinfo
+, freezegun
+, pytestCheckHook
+, pytz
+}:
 
 buildPythonPackage rec {
   pname = "babel";
   version = "2.12.1";
+  format = "setuptools";
+
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
@@ -11,12 +23,29 @@ buildPythonPackage rec {
     hash = "sha256-zC2ZmZzQHURCCuclohyeNxGzqtx5dtYUf2IthYGWNFU=";
   };
 
-  propagatedBuildInputs = lib.optional (pythonOlder "3.9") pytz;
+  propagatedBuildInputs = lib.optionals (pythonOlder "3.9") [
+    pytz
+  ];
 
-  nativeCheckInputs = [ pytestCheckHook freezegun ];
+  nativeCheckInputs = [
+    # via setup.py
+    freezegun
+    pytestCheckHook
+    # via tox.ini
+    pytz
+  ] ++ lib.optionals (pythonOlder "3.9") [
+    backports-zoneinfo
+  ];
+
+  disabledTests = [
+    # fails on days switching from and to daylight saving time in EST
+    # https://github.com/python-babel/babel/issues/988
+    "test_format_time"
+  ];
 
   meta = with lib; {
     homepage = "https://babel.pocoo.org/";
+    changelog = "https://github.com/python-babel/babel/releases/tag/v${version}";
     description = "Collection of internationalizing tools";
     license = licenses.bsd3;
     maintainers = with maintainers; [ SuperSandro2000 ];