python38Packages.python-redis-lock: fix build on darwin

pkgs/development/python-modules/python-redis-lock/default.nix

@@ -1,4 +1,5 @@
 { lib
+, stdenv
 , buildPythonPackage
 , fetchPypi
 , redis
@@ -30,6 +31,10 @@ buildPythonPackage rec {
   disabledTests = [
     # https://github.com/ionelmc/python-redis-lock/issues/86
     "test_no_overlap2"
+  ] ++ lib.optionals stdenv.isDarwin [
+    # fail on Darwin because it defaults to multiprocessing `spawn`
+    "test_reset_signalizes"
+    "test_reset_all_signalizes"
   ];
 
   meta = with lib; {