[gentoo-user] removing an overlay

[Alan Warren]

Hello,

I've just sync'd my machine, and realized I'm pulling in a few packages from
the devnull overlay that I would rather not. freetype / fontconfig / cairo
for example and it's causing
some conflicts when I try to update (-auvND world). I mainly use devnull for
uzbl, dmenu, and my window manger awesome, as they tend to have the latest
versions.

If I remove devnull, will these packages continue being maintained by
portage? I don't mind getting these packages from portage if it means less
hassle when I update, but the docs
suggest that I remove every package that I've installed from devnull before
moving forward. This seems like a tremendous hassle, but perhaps there's a
one-shot command for doing this?

I'm surprised packages in overlays take precedence over portage. Is there
any way to get a single package from an overlay without taking "everything"
?

Kind regards,
-Alan