I think we should drop the ia64-linux keyword from Prefix, I don't have access to such machines any more, but darkside is registered as the maintainer in the platform matrix. So, darkside, your call.
Summary: #gentoo-prefix2008-12.log:15:35 <@darkside_> ia64-linux is returning btw #gentoo-prefix2009-01.log:13:25 <@darkside_> ~ia64-linux has landed #gentoo-prefix2010-01.log:12:25 <@darkside_> my ia64-linux prefix is not updateable -- #gentoo-prefix2011-10.log:15:45 <@darkside_> and, ia64-linux. /me shrugs #gentoo-prefix2011-10.log-15:46 <@darkside_> we dropped support for that platform @ work and I've stopped using it #gentoo-prefix2011-10.log-15:46 <@grobian> so, let's keeeeel it #gentoo-prefix2011-10.log-15:46 <@grobian> (again) #gentoo-prefix2011-10.log:15:46 <@darkside_> at the time, ia64-linux was just "free" from ia64 gentoo #gentoo-prefix2011-10.log-15:46 <@grobian> yeah, I even used it back then #gentoo-prefix2011-10.log-15:47 <@darkside_> i was over ambitious when i was new ;)
ia64-linux was removed a while ago