We released today a new version of the ShiningPanda plugin for Jenkins. For those who don't know this plugin yet, it provides the easiest path to setup your Python projects with Jenkins.
This new release, version 0.6, embeds the new virtualenv (with additional pull request #193).
As a consequence, the No site packages option in Virtualenv Builder becomes System site packages and works exactly the opposite way: checking it will give the virtual environment access to the global site-packages directory. But don't worry, the plugin ensures backward compatibility.
We also fixed a 0.4 to 0.5 ...