It may be ancient - but it's wanted by xscreensaver-demo, it's not in xscreensaver, and it builds. Unsure of license - "Original Author: Unknown" - plus it's pre-1988 - pretty much puts it in the public domain to my way of thinking, but I guess it's not that clear-cut.
Created attachment 26236 [details] Ebuild
don't sure about the license either. in cvs anyway.
Alastair, what's your comment on those ebuilds? should we make them PDEPEND of xscreensaver or something like that?