From c8edddb31bdb046850cd82ef3c9748f47a03054b Mon Sep 17 00:00:00 2001
From: Brian Warner <warner@lothar.com>
Date: Tue, 15 Mar 2016 18:41:59 -0700
Subject: [PATCH] travis: enable cache, should speed up builds a lot

This will allow travis builders to cache generated wheels between
builds, so all the dependencies don't have to get re-built every time.
---
 .travis.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index b5c063ec1..26ff9a89e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,8 @@
 sudo: false
 language: python
+cache: pip
+before_cache:
+  - rm -f $HOME/.cache/pip/log/debug.log
 python:
   - "2.7"
   - "pypy"