[arch-general] Installing Arch Linux on pure ZFS root

Hello, Archers! In the light of "production ready" ZoL I've tried to install Arch on pure ZFS root (without additional boot partition) and stuck in problem with GRUB2. Current version of GRUB2 is not detecting ZoL in any way ("grub-probe /" does not return zfs, but errors). In the official repo on the github I've numerous see references to patched GRUB of version 1.99 (https://launchpad.net/~zfs-native/+archive/grub), but it is ubuntu only. Does anybody install Arch on ZFS root/boot without additional partitioning? Is it even possible? Thanks! -- Stanislav Seletskiy