We try to keep the RPM dependency list as small as possible, and only depend on the base, extras, and updates repositories. All (or nearly all) of the dependencies at present are system utilities, compression libraries, and stuff like that. The rest, we make every attempt to provide ourselves as part of our software, installed in a private place that doesn't affect other programs.
A full list of our software dependencies for the operating system of your choice is available from Xcalar support if you need to evaluate/approve everything that is installed. If you can have the necessary dependencies pre-installed on the Xcalar cluster nodes, the installer will not reach out to any additional repositories.