To add a repository, log into Nexus as an Administrator, and click on the Repositories link in the left-hand navigation menu in the Views/Repositories section. Clicking on this link should bring up a window that lists all of the repositories which Nexus knows about. You'll then want to create a new proxy repository. To do this, click on the Add link that is directly above the list of repositories. When you click the Add button, click the down arrow directly to the right of the word Add, this will show a drop-down which has the options: Hosted Repository, Proxy Repository, Virtual Repository, and Repository Group. Since you are creating a proxy repository, click on Proxy Repository.

Once you do this, you will see a screen resembling Figure 4.2, “Adding a Nexus Repository”. Populate the required fields Repository ID and the Repository Name with "caja" and "Google Caja". Set the Repository Policy to "Release", and the Remote Storage Location to http://google-caja.googlecode.com/svn/maven.

Once you've filled out this screen, click on the Save button. Nexus will then be configured with the caja proxy repository. Do the same thing for the oauth repository. Create a repository with the Repository ID of oauth, with a Release policy, and the Remote Storage Location of http://oauth.googlecode.com/svn/code/maven.