From d4b9bf9833f203159f1f8db777e0482e881f58d7 Mon Sep 17 00:00:00 2001
From: Ben Finney <ben+python@benfinney.id.au>
Date: Nov 30 2022 00:37:52 +0000
Subject: Migrate to Setuptools implementation of ‘Version’ class.


---

diff --git a/test_version.py b/test_version.py
index 376a513..13eb887 100644
--- a/test_version.py
+++ b/test_version.py
@@ -25,6 +25,7 @@ import docutils.writers
 import setuptools
 import setuptools.command
 import setuptools.dist
+from setuptools.extern.packaging.version import InvalidVersion
 import testscenarios
 import testtools
 
@@ -461,19 +462,19 @@ class ChangeLogEntry_version_TestCase(ChangeLogEntry_BaseTestCase):
                 }),
             ('non-number', {
                 'test_args': {'version': "b0gUs"},
-                'expected_error': ValueError,
+                'expected_error': InvalidVersion,
                 }),
             ('negative', {
                 'test_args': {'version': "-1.0"},
-                'expected_error': ValueError,
+                'expected_error': InvalidVersion,
                 }),
             ('non-number parts', {
                 'test_args': {'version': "1.b0gUs.0"},
-                'expected_error': ValueError,
+                'expected_error': InvalidVersion,
                 }),
             ('too many parts', {
                 'test_args': {'version': "1.2.3.4.5"},
-                'expected_error': ValueError,
+                'expected_error': InvalidVersion,
                 }),
             ]
 
diff --git a/version.py b/version.py
index 2634178..9fa0e1b 100644
--- a/version.py
+++ b/version.py
@@ -24,7 +24,6 @@
 import collections
 import datetime
 import distutils
-import distutils.version
 import functools
 import io
 import json
@@ -38,6 +37,7 @@ import setuptools.command.build
 import setuptools.command.build_py
 import setuptools.command.egg_info
 import setuptools.dist
+import setuptools.extern.packaging.version
 
 
 def ensure_class_bases_begin_with(namespace, class_name, base_class):
@@ -187,11 +187,7 @@ class ChangeLogEntry:
             # A valid non-version value.
             return None
 
-        match = distutils.version.StrictVersion.version_re.match(value)
-        if match is None:
-            raise ValueError(
-                    "not a valid version string {value!r}".format(
-                        value=value))
+        valid_version = setuptools.extern.packaging.version.Version(value)
 
     @classmethod
     def validate_maintainer(cls, value):