From 37dddf5bf7a70c8c07bb383b3f417ce977befb61 Mon Sep 17 00:00:00 2001
From: Matthew Leather <39400458+matthew16550@users.noreply.github.com>
Date: Sat, 8 Sep 2018 05:09:30 +1200
Subject: [PATCH] Fix for broken Travis builds on macOS with Python 3.7 (#704)
 (#705)

---
 .travis.yml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 618fc4f1..90bb9396 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -61,7 +61,11 @@ install:
       if [[ $TRAVIS_OS_NAME == 'osx' ]]; then
           if [[ -n "$BREW_PYTHON_PACKAGE" ]]; then
               brew update
-              brew install "$BREW_PYTHON_PACKAGE"
+              if ! brew list --versions "$BREW_PYTHON_PACKAGE" >/dev/null; then
+                  brew install "$BREW_PYTHON_PACKAGE"
+              elif ! brew outdated "$BREW_PYTHON_PACKAGE"; then
+                  brew upgrade "$BREW_PYTHON_PACKAGE"
+              fi
           fi
           sudo pip2 install tox
       fi