From 53504a5d7ebdaaaf4417520e8374515e1d759cb5 Mon Sep 17 00:00:00 2001
From: Thomas Ferreira de Lima <tlima@princeton.edu>
Date: Sun, 7 Oct 2018 13:19:12 -0400
Subject: [PATCH] Fixing brew install bug due to ruby version mismatch.

Refer to https://github.com/Homebrew/brew/issues/3299

Bug seen in https://travis-ci.org/lightwave-lab/klayout/jobs/438311059#L187
---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 1d03cf301..7bb698ed4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -58,7 +58,7 @@ matrix:
       os: osx
       osx_image: xcode8  # macOS 10.11
       env:
-        - MATRIX_EVAL="rvm list; rvm use ruby-2.3.0; brew install python3; brew unlink python && brew link --overwrite python3;"
+        - MATRIX_EVAL="rvm list; rvm use ruby-2.3.0; brew update; brew config; brew upgrade python; brew unlink python && brew link --overwrite python;"
         - ARCHFLAGS="-std=c++11"
         - PIP_UPDATE="1"
         - PYTHON_BUILD=true