brightnessctl : A cli tool to control display brightness ( https://github.com/Hummer12007/brightnessctl )
corepack : Fast, reliable, and secure node dependency management ( https://yarnpkg.com )
fwupd : Aims to make updating firmware on Linux automatic, safe and reliable ( https://fwupd.org )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a ambasta
For Paludis use this rsync : rsync://gentoo.zugaina.org/ambasta-portage
If you have a problem : ycarus(-at-)zugaina.org