Comment 2 for bug 878740

It's currently disabled in localechooser upstream because, presumably, that translation isn't sufficiently complete in d-i. As such, there's no point importing that translation into ubiquity because it won't be used. Somebody needs to work with d-i upstream to get that translation sorted out there.

Related:

  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=362502