message: Try to fix travis macOS build
diff: @@ -39,10 +39,9 @@ addons:
  - libxi-dev
  - libxmu-dev
  - freeglut3-dev
  -
  -before_install:
  - - if [ "$TRAVIS_OS_NAME" = "osx" ]; then travis_retry brew update; fi
  - - if [ "$TRAVIS_OS_NAME" = "osx" ]; then travis_retry brew install glew ;fi
  + homebrew:
  + packages:
  + - glew
  script:
  