From d93fc9dc9c156ac5934b020c8194361d9a608c47 Mon Sep 17 00:00:00 2001
From: Matthieu Gautier <mgautier@kymeria.fr>
Date: Mon, 19 Mar 2018 18:39:03 +0100
Subject: [PATCH] Also cache pip in travis.

---
 .travis.yml                  | 1 +
 travis/install_extra_deps.sh | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index de4569b..ba7956f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,6 +17,7 @@ before_cache:
 cache:
   ccache: true
   directories:
+    - $HOME/.cache/pip
     - $HOME/.gradle/caches/
     - $HOME/.gradle/wrapper/
     - $HOME/.android/build-cache
diff --git a/travis/install_extra_deps.sh b/travis/install_extra_deps.sh
index 987c2d0..1d7c544 100755
--- a/travis/install_extra_deps.sh
+++ b/travis/install_extra_deps.sh
@@ -6,8 +6,8 @@ orig_dir=$(pwd)
 
 sudo apt-get update -qq
 sudo apt-get install -qq python3-pip zlib1g-dev libjpeg-dev
-pip3 install --user meson==0.43.0
-pip3 install --user pillow
+pip3 install --user --upgrade pip wheel
+pip3 install --user pillow meson==0.43.0
 
 # ninja
 git clone git://github.com/ninja-build/ninja.git