From 359f9e79a72b6841c049da07cbc155348c9957ee Mon Sep 17 00:00:00 2001
From: Thomas A Caswell <tcaswell@gmail.com>
Date: Mon, 14 Mar 2022 13:19:30 -0400
Subject: [PATCH] BLD: require packaging in setup_requires

Closes #22648
---
 setup.py    | 1 +
 setupext.py | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 58ef02ac8a62..eb0c0f8fd7a4 100644
--- a/setup.py
+++ b/setup.py
@@ -304,6 +304,7 @@ def make_release_tree(self, base_dir, files):
         "numpy>=1.19",
         "setuptools_scm>=4",
         "setuptools_scm_git_archive",
+        "packaging>=20.0",
     ],
     install_requires=[
         "cycler>=0.10",
diff --git a/setupext.py b/setupext.py
index bc4c1b71c505..6f59f403c070 100644
--- a/setupext.py
+++ b/setupext.py
@@ -14,8 +14,8 @@
 import tarfile
 import textwrap
 import urllib.request
-from packaging import version
 
+from packaging import version
 from setuptools import Distribution, Extension
 
 _log = logging.getLogger(__name__)