root@ares ~ # emerge -uDavN world

These are the packages that would be merged, in order:

Calculating world dependencies... done!
Traceback (most recent call last):
  File "/usr/bin/emerge", line 3345, in ?
    mydepgraph.display(mydepgraph.altlist())
  File "/usr/bin/emerge", line 1662, in display
    verboseadd += create_use_string(key.upper(), cur_iuse_map[key], cur_use_map[key],
KeyError: 'elibc'