sys-libs/ncurses:=

lua?
      ( lua_single_target_luajit?
            ( dev-lang/luajit:= )
       lua_single_target_lua5-1?
            ( dev-lang/lua:5.1 )
       )

ods?
      ( dev-libs/libxml2 dev-libs/libzip )

plots?
      ( sci-visualization/gnuplot )

tmux?
      ( app-misc/tmux )

wayland?
      ( gui-apps/wl-clipboard )

X?
      ( x11-misc/xclip )

xls?
      ( dev-libs/libxls )

xlsx?
      ( dev-libs/libxlsxwriter dev-libs/libxml2 dev-libs/libzip )