Upstream https://github.com/tianocore/edk2 Debian: https://packages.debian.org/sid/source/edk2 Arch: https://archlinux.org/packages/extra/any/edk2-shell/
sys-firmware/edk2 now has the UEFI shell and Secure Boot, although the shell is disabled in the firmware's Secure Boot build as per security recommendations.
I'm going to close this now. I don't think we really want a live ebuild. The releases are fairly frequent and, in this case, a live ebuild would make it even more complex than it already is.