qtwayland is part of the new Qt release. It's time for a non-git ebuild. Reproducible: Always
Looks like it got removed from the qt overlay but not added to the main tree.
Sorry about that, my mistake. Fixed now. + 13 Dec 2014; Michael Palimaka <kensington@gentoo.org> +metadata.xml, + +qtwayland-5.4.0.ebuild: + Import from qt overlay.