On Wed, 23 Jan 2013 17:01:11 -0600, Bruce Hill wrote: > > > N = newuse (pkgs with changed USE flags) > > > > --changed-use makes more sense than -N, it saves unnecessary > > compiling. > > If I understand "man emerge", --newuse tells me if an installed > package has a USE flag that was added, removed, turned on, or turned > off; whereas --changed-use only notifies me if a USE flag that I've > chosen on my installed packages are changed -- not any other USE flags > the maintainer, or some other committer, has changed (those have bitten > me in the past).
That's right. So --changed-use only reemerges the package if the change only affects your system, whereas -N will rebuild it even if the changed flag is of no interest to you, such as when a flag you were not using is removed. It saves recompiling packages for no reason, which is presumably the reason it was added, it is a newer option than -N. -- Neil Bothwick This is the day for firm decisions! Or is it?
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