Index: nose2-0.15.1/nose2/plugins/mp.py
===================================================================
--- nose2-0.15.1.orig/nose2/plugins/mp.py
+++ nose2-0.15.1/nose2/plugins/mp.py
@@ -1,7 +1,9 @@
+import contextlib
 import logging
 import multiprocessing
 import multiprocessing.connection as connection
 import os
+import platform
 import select
 import sys
 import unittest
@@ -28,6 +30,11 @@ class MultiProcess(events.Plugin):
 
         self.cases = {}
 
+        # This requires the broken 'fork' start method to share state.
+        if sys.version_info[:2] >= (3, 14) and platform.system() == "Linux":
+            with contextlib.suppress(RuntimeError):
+                multiprocessing.set_start_method('fork')
+
     @property
     def procs(self):
         """Get the appropriate number of procs for self.procs if self._procs is
Index: nose2-0.15.1/nose2/tests/unit/test_plugin_api.py
===================================================================
--- nose2-0.15.1.orig/nose2/tests/unit/test_plugin_api.py
+++ nose2-0.15.1/nose2/tests/unit/test_plugin_api.py
@@ -17,9 +17,9 @@ class TestPluginApi(TestCase):
 
     def test_add_option_adds_option(self):
         helpt = self.session.argparse.format_help()
-        assert "-X, --xxx" in helpt, (
-            "commandLineSwitch arg not found in help text: %s" % helpt
-        )
+        # Output may be colored
+        assert "-X" in helpt
+        assert "--xxx" in helpt
 
     def test_short_opt_registers_plugin(self):
         args, argv = self.session.argparse.parse_known_args(["-X"])