Merge pull request #390 from dreid/install-pypy-again

Revert "Travis now has an up to date pypy"
diff --git a/.travis/install.sh b/.travis/install.sh
index 4aa3979..fdd7190 100755
--- a/.travis/install.sh
+++ b/.travis/install.sh
@@ -5,8 +5,24 @@
 
 if [[ "${OPENSSL}" == "0.9.8" ]]; then
     sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu/ lucid main"
-    sudo apt-get -y update
+fi
+
+if [[ "${TOX_ENV}" == "pypy" ]]; then
+    sudo add-apt-repository -y ppa:pypy/ppa
+fi
+
+sudo apt-get -y update
+
+if [[ "${OPENSSL}" == "0.9.8" ]]; then
     sudo apt-get install -y --force-yes libssl-dev/lucid
 fi
 
+if [[ "${TOX_ENV}" == "pypy" ]]; then
+    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