app-editors/neovim has keywords="~amd64 ~x86" app-editors/neovim-0.1.4 depends on dev-lua/mpack (pull request currently open) dev-lua/mpack depends on dev-lua/busted for testing. dev-lua/busted has keywords="~amd64"
dev-lua/busted is also required for tests in >=media-video/aegisub-3.2.2_p20160518.
No action from maintainers for months. Dear x86 arch team please test and keyword.
x86 done https://gitweb.gentoo.org/repo/gentoo.git/log/?qt=range&q=26ea889443021212135d580dc96e41bf4da68d10...9010f3afd0af693064cf39bb82ea3e3a703132ae