Use this url in your Eclipse Kura workspace to install this package.
OFFICIAL ADD-ON for Eclipse Kura - This element packages a set of Wire Components that can be useful during the development of graphs or new Wire Components for Eclipse Kura Wires.
This package is an official add-on provided and maintained by the Eclipse Kura Development Team
To install the package, simply drag and drop the Eclipse Marketplace link into the Kura Packages section of the Web UI (see Screenshots section). It may be required to add the server certificates to your local installation