From b5f8c7ddf9e2b1713d7212ae458a295a3b1dc5e0 Mon Sep 17 00:00:00 2001
From: Guillaume Bury <guillaume.bury@gmail.com>
Date: Sat, 23 Jul 2016 14:35:23 +0200
Subject: [PATCH] Use travis apt addon to install opam

---
 .travis.yml | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index b3d2a560..29a942d7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,10 +6,13 @@ env:
   - OCAML_VERSION=4.02.3
   - OCAML_VERSION=4.03.0
   - OCAML_VERSION=4.03.0+flambda
+addons:
+  apt:
+    sources:
+      - sourceline 'ppa:avsm/ocaml42+opam12'
+    packages:
+      - opam
 before_install:
-  - echo "yes" | sudo add-apt-repository ppa:avsm/ocaml42+opam12
-  - sudo apt-get update -qq
-  - sudo apt-get install -qq ocaml ocaml-native-compilers camlp4-extra opam
   - export OPAMYES=1
   - export OPAMVERBOSE=1
   - opam init