An unofficial Gentoo Overlay that enables installation of Canonical's "Snappy" backbone.
Gentoo's currently preferred Overlay system is through using a git sync. What follows are abbreviated instructions assuming that you already have the dev-vcs/git and app-portage/layman packages installed.
Add the overlay:
# layman -o https://raw.githubusercontent.com/gentoomaniac/gentoo-snappy/master/gentoo-snappy.xml -f -a gentoo-snappy
Sync overlay:
# layman -S
Based off of Docker being available within this portage category, I have placed snapd (the guts of snappy) here as well. Installation of this package will draw in sys-apps/snap-confine as a dependency.
Provides sandbox type isolation of individual snap packages. This is a dependency of snapd proper.
# emerge -av app-emulation/snapd
# systemctl enable --now snapd.service