After getting my oVirt setup up and running, I wanted an easy way to open a Spice console to a VM on my Gentoo workstation. There are several ways to do this, as explained here. The easiest way is via the browser plugin, but I couldn't get that to compile yet. The next best option is using ovirt-shell, from the ovirt-engine-cli tools.
Unfortunately I couldn't find any ebuild for this package yet. I found the ovirt-overlay, containing oVirt-engine itself, but no ebuilds for ovirt-engine-cli. So I cloned the repo, added an ebuild for ovirt-engine-cli and its dependencies. While at it, I also added an ebuild for ovirt-iso-uploader. I sent a PR to the maintainer of the ovirt-overlay, but for now you can just use my clone.