From 725e4cc43dde51c98520cb4b66a1f57aaef4038b Mon Sep 17 00:00:00 2001
From: silvacarloss <ces.eduardo98@gmail.com>
Date: Thu, 5 Jan 2023 16:30:09 -0300
Subject: [PATCH] [stable-only] Pin tox version

Modify project.yaml file to use ensure_tox_version, which will
force the host to install tox3.

Tox.ini also needed to be modified to ensure that tox does not
upgrade itself to a version >= 4.

Change-Id: Ica5a18a376b4415096dbc916be89ba15ebd7a665
---
 tox.ini             | 1 +
 zuul.d/project.yaml | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/tox.ini b/tox.ini
index 71eaa3d024..882a66383d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,6 +6,7 @@ envlist = py3,pep8
 # env and ignore basepython inherited from [testenv] if we set
 # ignore_basepython_conflict.
 ignore_basepython_conflict = true
+requires = tox<4
 
 [testenv]
 basepython = python3
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index b33dcbeb4f..3af4625c9f 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -1,4 +1,6 @@
 - project:
+    vars:
+      ensure_tox_version: '<4'
     templates:
       - publish-openstack-docs-pti
       - openstack-cover-jobs