When you try to add a software site (the p2 plugin repository — either one generated by p2 Publisher or Nexus with p2 support), the target definition through the "Target Definition Wizard" seems to be "no items available", preventing the site from being added.
The same problem has been reported, for example. here: https://docs.sonatype.org/display/Nexus/Nexus+OSGi+Experimental+Features+-+P2+Repository+Plugin?focusedCommentId=12943363#comment-12943363
Tycho and https://github.com/ifedorenko/p2-browser are capable of selecting metadata and content, since the site contains the number of packs (in the "plugins" directory) along with artifacts.xml and content.xml.
Is there a known user interface limitation / error associated with this behavior, or could you point me to a workaround?
By default, the user interface only shows “categorized” functions. Uncheck the box to see all the functions in the repository.