Basically one of either outcomes happen: 1. Maintainers of both projects fight it out and one project gets renamed. Users are happy. Packagers are happy.

2. Maintainers of both projects fight it out and neither compromise. Users of both projects (intersection of the sets, rather than union) are pissed. Packagers are even more pissed, and put in an annoying and difficult situation, and forced to come out with weird hacky solutions to appease users. (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=614907)

To any of you who read this and find yourself naming a project in the future, do your users some justice and at least do some cursory Googling before settling on a name. And please don't pick annoying-to-Google names like + or * or - or _ or some other one- or two-character name.