TOXENV is tox supported env

Author: dangra

.travis-install.sh renamed to .travis-workarounds.sh

@@ -2,13 +2,11 @@
 set -e
 set -x
 
-if [[ "${TOX_ENV}" == "pypy" ]]; then
+if [[ "${TOXENV}" == "pypy" ]]; then
     sudo add-apt-repository -y ppa:pypy/ppa
     sudo apt-get -qy update
     sudo apt-get install -y pypy
     # This is required because we need to get rid of the Travis installed PyPy
     # or it'll take precedence over the PPA installed one.
     sudo rm -rf /usr/local/pypy/bin
 fi
-
-pip install tox coveralls

.travis.yml

@@ -1,20 +1,20 @@
 language: python
 python: 2.7
 env:
-    - TOX_ENV=py27
-    - TOX_ENV=precise
-    - TOX_ENV=trunk
-    - TOX_ENV=pypy
+    - TOXENV=py27
+    - TOXENV=precise
+    - TOXENV=trunk
+    - TOXENV=pypy
 
 matrix:
     allow_failures:
-        - env: TOX_ENV=pypy
+        - env: TOXENV=pypy
 
 install:
-    - ./.travis-install.sh
+    - ./.travis-workarounds.sh
+    - pip install -M tox
 
-script:
-    - tox -e $TOX_ENV
+script: tox
 
 notifications:
     irc: