Unbreak macOS build on Travis

Author: elprans

.ci/travis-before-install.sh

@@ -3,14 +3,14 @@
 set -e -x
 
 if [ "${TRAVIS_OS_NAME}" == "osx" ]; then
-    git clone --depth 1 https://github.com/yyuu/pyenv.git ~/.pyenv
-    PYENV_ROOT="$HOME/.pyenv"
-    PATH="$PYENV_ROOT/bin:$PATH"
+    brew update >/dev/null
+    brew upgrade pyenv
     eval "$(pyenv init -)"
 
     if ! (pyenv versions | grep "${PYTHON_VERSION}$"); then
         pyenv install ${PYTHON_VERSION}
     fi
+
     pyenv global ${PYTHON_VERSION}
     pyenv rehash
 fi

.travis.yml

@@ -38,11 +38,11 @@ matrix:
           services: [docker]
 
         - os: osx
-          env: BUILD=tests,wheels PYTHON_VERSION=3.5.4 PIP_USER=1
+          env: BUILD=tests,wheels PYTHON_VERSION=3.5.5
 
         - os: osx
           osx_image: xcode8.3
-          env: BUILD=tests,wheels PYTHON_VERSION=3.6.4 PIP_USER=1
+          env: BUILD=tests,wheels PYTHON_VERSION=3.6.5
 
     allow_failures:
         - python: "3.7-dev"