From d4f48ccb5cafe5a0f0fdeed6c48cbdf675315d15 Mon Sep 17 00:00:00 2001
From: "Mark A. Grondona" <mark.grondona@gmail.com>
Date: Thu, 4 May 2023 08:25:32 -0700
Subject: [PATCH] ci: pin urllib<2 to address readthedocs build failure

Problem: ReadTheDocs CI build currently fails with:

 ImportError: urllib3 v2.0 only supports OpenSSL 1.1.1+,
  currently the 'ssl' module is compiled with OpenSSL 1.0.2n  7 Dec 2017
  See: https://github.com/urllib3/urllib3/issues/2168

Workaround the issue until the builders update their OpenSSL
by pinning urllib<2.
---
 doc/requirements.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/doc/requirements.txt b/doc/requirements.txt
index 548a9849..a78a8086 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -2,3 +2,4 @@ sphinx==3.4.3
 sphinx-rtd-theme>=0.5.2
 docutils>=0.14,<0.18
 Jinja2<3.1
+urllib3<2