From 3bbc46967d35cd7e05677018bdc9d552efaeea3e Mon Sep 17 00:00:00 2001
From: Ben Finney <ben+python@benfinney.id.au>
Date: Mar 08 2023 07:02:47 +0000
Subject: Use explicitly-maintained ‘packaging.version’ for version string parsing.


---

#diff --git a/ChangeLog b/ChangeLog
#index bba4b5a..f5ee1e0 100644
#--- a/ChangeLog
#+++ b/ChangeLog
#@@ -14,9 +14,14 @@ Version NEXT
# :Released: FUTURE
# :Maintainer: UNKNOWN <unknown@example.org>
# 
#-Changes:
#+Bugs Fixed:
#+
#+* Migrate to use the explicitly-maintained ‘packaging’ library.
#+
#+  The package bundled in ‘setuptools.extern.packaging’ is to help make that
#+  package self-contained, but is not a supported API.
# 
#-* None.
#+  Closes: Pagure #73. Thanks to Michał Górny for the report.
# 
# 
# Version 3.0.1
diff --git a/test_version.py b/test_version.py
index c43cd36..d6095e4 100644
--- a/test_version.py
+++ b/test_version.py
@@ -20,10 +20,10 @@ import unittest.mock
 import docutils
 import docutils.nodes
 import docutils.writers
+from packaging.version import InvalidVersion
 import setuptools
 import setuptools.command
 import setuptools.dist
-from setuptools.extern.packaging.version import InvalidVersion
 import testscenarios
 import testtools
 
diff --git a/version.py b/version.py
index 20d3ef3..2d7d048 100644
--- a/version.py
+++ b/version.py
@@ -31,12 +31,12 @@ import re
 import sys
 import textwrap
 
+import packaging.version
 import setuptools
 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):
@@ -186,7 +186,7 @@ class ChangeLogEntry:
             # A valid non-version value.
             return None
 
-        valid_version = setuptools.extern.packaging.version.Version(value)
+        valid_version = packaging.version.Version(value)
 
     @classmethod
     def validate_maintainer(cls, value):