Indeed. For now all Arch Linux packages (Groovy and Hydro) use [`yaml-cpp0.3`](https://aur.archlinux.org/packages/yaml-cpp0.3/). We also have the problem with Ogre 1.9 (currently using [`ogre-1.8`](https://aur.archlinux.org/packages/ogre-1.8/) from AUR). I will switch once this is fixed, but it doesn't seem to be the case right now.