python312Packages.pyvirtualdisplay: test without xdist

High core counts tend to produce hangs and defunct python processes. And
while upstream has put pytest-xdist into its test requirements they don't
actually use it themselves either.

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

@@ -14,6 +14,7 @@
   entrypoint2,
   pillow,
   psutil,
+  pytest-timeout,
   pytest-xdist,
   pytestCheckHook,
   vncdo,
@@ -47,7 +48,7 @@ buildPythonPackage rec {
     entrypoint2
     pillow
     psutil
-    pytest-xdist
+    pytest-timeout
     pytestCheckHook
     (vncdo.overridePythonAttrs { doCheck = false; })
     xorg.xorgserver
@@ -55,6 +56,8 @@ buildPythonPackage rec {
     xorg.xvfb
   ];
 
+  pytestFlagsArray = [ "-v" ];
+
   meta = with lib; {
     description = "Python wrapper for Xvfb, Xephyr and Xvnc";
     homepage = "https://github.com/ponty/pyvirtualdisplay";