setup.zip is no longer served

Summary

This resource is crucial to the functioning of the Eclipse Installer (providing the catalogs for what to install):

Opening that in a browser redirects to here:

The network traffic shows a 302:

Probably the project named "set" got confused somewhere and took over "setups" "namespace"...

All installers will either fail like displayed here:

Or maybe use locally cached content that's likely out of date so won't install the correct new Eclipse version.