Move the rest of the code to the scripts.

.travis.yml

@@ -15,12 +15,6 @@ python:
 - 3.4
 
 before_install:
-    - sh -e /etc/init.d/xvfb start
-    - export DISPLAY=:99.0
-    - sudo apt-get update
-
-    - export WHEELHOUSE="--no-index --find-links=http://wheels.scikit-image.org/"
-    - export PYTHONWARNINGS="all"
     - tools/travis_setup.sh
 
 install:

tools/travis_setup.sh

@@ -1,6 +1,11 @@
 #!/usr/bin/env bash
 set -ex
 
+sh -e /etc/init.d/xvfb start
+sudo apt-get update
+
+WHEELHOUSE="--no-index --find-links=http://wheels.scikit-image.org/"
+
 pip install wheel flake8 coveralls nose
 pip uninstall -y numpy
 

tools/travis_test.sh

@@ -1,6 +1,10 @@
 #!/usr/bin/env bash
 set -ex
 
+export DISPLAY=:99.0
+export PYTHONWARNINGS="all"
+WHEELHOUSE="--no-index --find-links=http://wheels.scikit-image.org/"
+
 tools/header.py "Run all tests with minimum dependencies"
 nosetests --exe -v skimage