python3-test-subprocess-userns.patch

Make test_subprocess.test_user / test_group tolerate user namespace
builder sandboxes where setregid / setreuid return EINVAL for unmapped
uid/gid values instead of EPERM/EACCES.

--- Python-3.13.13/Lib/test/test_subprocess.py.orig	2025-11-10 00:00:00.000000000 +0100
+++ Python-3.13.13/Lib/test/test_subprocess.py	2025-11-10 00:00:00.000000000 +0100
@@ -2202,6 +2202,10 @@ class POSIXProcessTestCase(BaseTestCase,
                             self.assertEqual(e.filename, sys.executable)
                         else:
                             self.assertIsNone(e.filename)
+                    except OSError as e:
+                        if e.errno != errno.EINVAL:
+                            raise
+                        self.skipTest("setreuid() EINVAL; unmapped uid in user namespace")
                     else:
                         if isinstance(user, str):
                             user_uid = pwd.getpwnam(user).pw_uid
@@ -2248,6 +2252,10 @@ class POSIXProcessTestCase(BaseTestCase,
                                 close_fds=close_fds)
                     except PermissionError as e:  # (EACCES, EPERM)
                         self.assertIsNone(e.filename)
+                    except OSError as e:
+                        if e.errno != errno.EINVAL:
+                            raise
+                        self.skipTest("setregid() EINVAL; unmapped gid in user namespace")
                     else:
                         if isinstance(group, str):
                             group_gid = grp.getgrnam(group).gr_gid