Horizon has been actively moving away from having 3rd party JavaScript libraries bundled in the Horizon repo. Most have been removed barring one or two exceptions. Moving forward new JavaScript libraries dependencies should either use existing xstatic packages or need a new one created for the library. The dependency will then be treated like any other python dependency in openstack/requirements. For more details, see the updated documentation: http://docs.openstack.org/developer/horizon/contributing.html#javascript-an d-css-libraries David