f91ea8b5bce91f14d7cbc14e636bd5af394b0506

 1diff --git a/.travis.yml b/.travis.yml
 2index f0dab024796d350f76947928b795416346bed6dd..7253c44a7b9622178d8b24d237b6f7a4c244c019 100644
 3--- a/.travis.yml
 4+++ b/.travis.yml
 5@@ -1,35 +1,33 @@
 6-dist: trusty
 7-sudo: required
 8-
 9+sudo: false
10 language: python
11 python:
12   - "3.6"
13 
14 env:
15- - ZSH_VERSION=5.4.2 URL="https://downloads.sourceforge.net/project/zsh/zsh/5.4.2/zsh-5.4.2.tar.xz"
16- - ZSH_VERSION=5.3.1 URL="https://downloads.sourceforge.net/project/zsh/zsh/5.3.1/zsh-5.3.1.tar.xz"
17- - ZSH_VERSION=5.2 URL="https://downloads.sourceforge.net/project/zsh/zsh/5.2/zsh-5.2.tar.xz"
18- - ZSH_VERSION=5.1.1 URL="https://downloads.sourceforge.net/project/zsh/zsh/5.1.1/zsh-5.1.1.tar.xz"
19- - ZSH_VERSION=5.0.8 URL="https://downloads.sourceforge.net/project/zsh/zsh/5.0.8/zsh-5.0.8.tar.gz"
20-
21-addons:
22-  apt:
23-    packages:
24-    - build-essential
25+    - ZSH_TARGET="5.4.2"
26+    - ZSH_TARGET="5.3.1"
27+    - ZSH_TARGET="5.2"
28+    - ZSH_TARGET="5.1.1"
29 
30 before_install:
31+    # Setup ccache to run instead of gcc
32+    - export PATH="/usr/lib/ccache:$PATH"
33+    - which gcc
34+    # Download zsh
35     - export LOCAL="$(mktemp --directory --tmpdir=${TMPDIR:/tmp} local.bin.XXXXXX)"
36-    - wget $URL
37-    - tar -xf "zsh-$ZSH_VERSION.tar."*
38-    - cd "zsh-$ZSH_VERSION"
39+    - wget "https://downloads.sourceforge.net/project/zsh/zsh/$ZSH_TARGET/zsh-$ZSH_TARGET.tar.xz"
40+
41+install:
42+    - pip install virtualenvwrapper restructuredtext_lint
43+    # Build and Install zsh
44+    - tar -xf "zsh-$ZSH_TARGET.tar.xz"*
45+    - cd "zsh-$ZSH_TARGET"
46     - ./configure --prefix="$LOCAL"
47     - make
48     - make install
49     - cd -
50     - export PATH="$LOCAL/bin:$PATH"
51 
52-install:
53-    - pip install virtualenvwrapper restructuredtext_lint
54 
55 before_script:
56     - mkdir -p ~/bin
57@@ -40,3 +38,8 @@ before_script:
58 script:
59     - rst-lint *.rst
60     - zunit --verbose
61+
62+cache:
63+  directories:
64+  - "$HOME/.cache/pip"
65+  - "$HOME/.ccache"