Source Code
Source code gives you access to the rawest, most flexible, and most up-to-date versions of Nova. However, that flexibility requires the most proficiency on the part of the end user to install, configure, and deploy. To gather Nova in source code format, you will need a few special tools, some knowledge of Python development, and a bit of patience.
The Nova source code can either be downloaded as a compressed tarball or via the bazaar source control system. Unless you already happen to develop with bazaar, it is easier to just download as the tarball. All the releases are available at https://launchpad.net/nova/+download. Instructions for installing from source are available on the OpenStack wiki “Install From Source” article.