The newly added =dev-lang/luajit-2.1.0_beta3 creates the binary /usr/bin/luajit-2.1.0-beta3 instead of the traditional /usr/bin/luajit. This causes app-shells/mpv-bash-completion USE=luajit to fail to compile with: /var/tmp/portage/app-shells/mpv-bash-completion-3.3.17/temp/environment: line 1020: luajit: command not found Creating a symlink to /usr/bin/luajit-2.1.0-beta3 at /usr/bin/luajit will enable app-shells/mpv-bash-completion to emerge properly: cd /usr/bin ln -s luajit-2.1.0-beta3 luajit
Removed.