From c6e05535886786fcb4938f90939da16f1514c490 Mon Sep 17 00:00:00 2001
From: Takashi Kajinami <kajinamit@oss.nttdata.com>
Date: Sat, 27 Jan 2024 19:39:19 +0900
Subject: [PATCH] Remove dependency on pytz

pytz will be removed from RHEL/CentOS 10 because of the built-in
zoneinfo[1].

Because the current usage of pytz can be very easily replaced, this
removes the dependency on pytz.

[1] https://issues.redhat.com/browse/RHEL-219

Change-Id: Ia72c528eadeccf6075894ff58477fecade65ad71
---
 ironic/common/utils.py | 3 +--
 requirements.txt       | 1 -
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/ironic/common/utils.py b/ironic/common/utils.py
index efd3049a95..3699fe8a25 100644
--- a/ironic/common/utils.py
+++ b/ironic/common/utils.py
@@ -40,7 +40,6 @@ from oslo_utils import netutils
 from oslo_utils import strutils
 from oslo_utils import timeutils
 import psutil
-import pytz
 
 from ironic.common import exception
 from ironic.common.i18n import _
@@ -453,7 +452,7 @@ def unix_file_modification_datetime(file_name):
         # normalize time to be UTC without timezone
         datetime.datetime.fromtimestamp(
             # fromtimestamp will return local time by default, make it UTC
-            os.path.getmtime(file_name), tz=pytz.utc
+            os.path.getmtime(file_name), tz=datetime.timezone.utc
         )
     )
 
diff --git a/requirements.txt b/requirements.txt
index cc17303f90..e4ea983de7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,6 @@ python-cinderclient!=4.0.0,>=3.3.0 # Apache-2.0
 python-glanceclient>=2.8.0 # Apache-2.0
 keystoneauth1>=4.2.0 # Apache-2.0
 ironic-lib>=5.5.0 # Apache-2.0
-pytz>=2013.6 # MIT
 stevedore>=1.29.0 # Apache-2.0
 oslo.concurrency>=4.2.0 # Apache-2.0
 oslo.config>=6.8.0 # Apache-2.0