Hello

Let me explain my problem:

I have just returned to my home and, then, I have a lot of packages to
update when running "emerge -avuDN world". The problem is that I have
FEATURES=test enabled in my make.conf and, since some of them take years
to run, I would like to temporally make portage skip them.

I have tried to simply disable that FEATURE temporally, but it causes
packages to change their USEs to "-test" having me to recompile them
later again.

Thanks a lot for your help :-)