cut
The others already gave you a working solution, but here's the reason
this is happening:
The qca package recently became slotted. However, only qca-1.0-r3 and
higher are slotted. You have qca-1.0-r2 installed with is *not*
slotted and therefore you can't install qca-2.x at the same time.
Problem is, qca-1.0-r3 is keyworded so you need to place this:
=app-crypt/qca-1.0-r3
in your /etc/portage/package.keywords and then proceed as the others
said. Unmerge the current version:
emerge -aC =app-crypt/qca-1.0-r2
and only then do your world update.
I followed the tip but now the output of emerge -NDpvu contains, among
the others, this line:
[ebuild NS ] app-crypt/qca-1.0-r3 0 kB
Regards
emilio
