python3Packages.timetagger: disable tests on python versions older than 3.10

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

@@ -3,6 +3,8 @@
 , fetchFromGitHub
 , pytestCheckHook
 , requests
+, pytest
+, pythonOlder
 }:
 
 python3Packages.buildPythonPackage rec {
@@ -33,8 +35,12 @@ python3Packages.buildPythonPackage rec {
   checkInputs = [
     pytestCheckHook
     requests
+    pytest
   ];
 
+  # fails with `No module named pytest` on python version 3.10
+  doCheck = pythonOlder "3.10";
+
   meta = with lib; {
     homepage = "https://timetagger.app";
     license = licenses.gpl3;