uninstalled packages. Copy the world file from the other machine
somewhere other than /var/lib/portage and run
emerge -n $(cat /path/to/otherworld)
Only one, portage will barf when you have a world file containing
I've never seen that, and yes, I've been known to add a package atom to
the end of the world file when I wanted to update world, and add a
package at the same time (xfce4 was the last time I think, a month or
so ago), and didn't want to do it in two commands.....
In that cases I was adding a whole DE, so was also changing lots of USE
flags, so wanted an emerge -uDavN world to just update all the use
flags at once.... echo "xfce-base/xfce4" >>
/var/lib/portage/world followed by emerge -uDavN world worked a
treat.....