-sudo apt-get install -y python-dev python-pip python-Levenshtein tidy
-sudo pip install lettuce nose pytidylib haversine psycopg2 shapely
+sudo apt-get install -y python-dev python-pip python-Levenshtein python-shapely \
+ python-psycopg2 tidy python-nose python-tidylib
+sudo pip install lettuce==0.2.18 six==1.7 haversine