mortar local:configure on stock Ubuntu Trusty

I'm using Ubuntu 14 at home and while going through the process of setting up a MortarData local install I found this to be helpful (enter at the shell):

# python3 is installed by default and includes a virtualenv implementation, pyvenv
# Ubuntu does not install javac by default
sudo apt-get install openjdk-7-jdk
sudo apt-get update
sudo apt-get install openjdk-7-jdk # second run installs javac

export JAVA_HOME=/bin

cd ~
pyvenv-3.4 py34
source py34/bin/activate
pip install virtualenv

mortar local:configure # everything should proceed without error