Refactor travis install logic to move it into a shell script

.travis.yml

@@ -14,19 +14,7 @@ env:
 before_install:
   - "[ -d ~/.distlib ] && sudo chown -R travis:travis ~/.distlib || true"
 
-install:
-  - "if [[ $TOXENV == 'pypy' ]]; then sudo add-apt-repository -y ppa:pypy/ppa; fi"
-  - "if [[ $TOXENV == 'pypy' ]]; then sudo apt-get -y update && sudo apt-get -y install pypy; fi"
-  # This is required because we need to get rid of the Travis installed PyPy
-  # or it'll take precedence over the PPA installed one.
-  - "if [[ $TOXENV == 'pypy' ]]; then sudo rm -rf /usr/local/pypy/bin; fi"
-  - "if [[ $TOXENV == 'py34' ]]; then .travis/py34.sh; fi"
-  - sudo apt-get install subversion bzr mercurial
-  - echo -e "[web]\ncacerts = /etc/ssl/certs/ca-certificates.crt" >> ~/.hgrc
-  - git config --global user.email "python-virtualenv@googlegroups.com"
-  - git config --global user.name "Pip"
-  - pip install --upgrade setuptools
-  - pip install tox
+install: .travis/install.sh
 
 script: .travis/run.sh
 

.travis/install.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+set -e
+set -x
+
+case $TOXENV in
+    py34)
+        sudo add-apt-repository -y ppa:fkrull/deadsnakes
+        sudo apt-get update
+        sudo apt-get install python3.4
+        ;;
+    pypy)
+        sudo add-apt-repository -y ppa:pypy/ppa
+        sudo apt-get -y update
+        sudo apt-get -y install pypy
+        ;;
+esac
+
+git config --global user.email "python-virtualenv@googlegroups.com"
+git config --global user.name "Pip"
+
+pip install --upgrade setuptools
+pip install tox