1 files changed, 39 insertions, 0 deletions
diff --git a/ci/before_install.sh b/ci/before_install.sh
new file mode 100755
index 0000000000..f84ad935bc
--- /dev/null
+++ b/ci/before_install.sh
@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+
+set -e
+set -o pipefail
+
+if [[ "${CI_TARGET}" == lint ]]; then
+  exit
+fi
+
+if [[ "${TRAVIS_OS_NAME}" == osx ]]; then
+  brew update
+fi
+
+echo 'python info:'
+(
+  2>&1 python --version || true
+  2>&1 python2 --version || true
+  2>&1 python3 --version || true
+  2>&1 pip --version || true
+  2>&1 pip2 --version || true
+  2>&1 pip3 --version || true
+  echo 'pyenv versions:'
+  2>&1 pyenv versions || true
+) | sed 's/^/  /'
+
+echo "Upgrade Python 2 pip."
+pip2.7 -q install --user --upgrade pip
+
+if [[ "${TRAVIS_OS_NAME}" == osx ]]; then
+  echo "Install Python 3."
+  brew install python3
+  echo "Upgrade Python 3 pip."
+  pip3 -q install --user --upgrade pip
+else
+  echo "Upgrade Python 3 pip."
+  # Allow failure. pyenv pip3 on travis is broken:
+  # https://github.com/travis-ci/travis-ci/issues/8363
+  pip3 -q install --user --upgrade pip || true
+fi