From 77606957e71ce477d2c5569718f0fc36f05c6f59 Mon Sep 17 00:00:00 2001
From: Brett Cannon <brettcannon@users.noreply.github.com>
Date: Tue, 16 May 2017 14:40:33 -0700
Subject: [PATCH] bpo-30380: Pin the version of Sphinx used to build the
 documentation (GH-1612) (GH-1618)

---
 .travis.yml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 5fee6cd76733..fe90bad626ce 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -37,9 +37,11 @@ matrix:
         - TESTING=docs
       before_script:
         - cd Doc
-        - make venv
+        # Sphinx is pinned so that new versions that introduce new warnings won't suddenly cause build failures.
+        # (Updating the version is fine as long as no warnings are raised by doing so.)
+        - python -m pip install sphinx~=1.6.1
       script:
-        - make check suspicious html PYTHON="./venv/bin/python" SPHINXBUILD="./venv/bin/python -m sphinx" SPHINXOPTS="-q -W"
+        - make check suspicious html SPHINXOPTS="-q -W"
     - os: linux
       language: c
       compiler: gcc
-- 
2.47.3