From cbd2bdd4c51c1f59cc10e60d1fe478f7c58bbde6 Mon Sep 17 00:00:00 2001
From: Johan Bloemberg <github@ijohan.nl>
Date: Tue, 20 Feb 2018 19:54:05 +0100
Subject: [PATCH] travis: Retry flaky apt update at build start

---
 .travis.yml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index c70cd66b..5087d3df 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,9 @@ go_import_path: github.com/purpleidea/mgmt
 sudo: true
 dist: trusty
 before_install:
-  - if [[ "$TRAVIS_OS_NAME" != "osx" ]]; then sudo apt update; fi
+  # apt update tends to be flaky in travis, retry up to 3 times on failure
+  # https://docs.travis-ci.com/user/common-build-problems/#travis_retry
+  - if [[ "$TRAVIS_OS_NAME" != "osx" ]]; then travis_retry sudo apt update; fi
   - git config remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*"
   - git fetch --unshallow
 install: 'make deps'