anchor.diff:  , upower
   , wayland
   , xf86-input-wacom
  -, xf86miscproto
   #, xkeyboardconfig
   , xorg
  -, xproto
  +, xorgproto
   
   , channel
   }:
  
positive.code: , gsettings-desktop-schemas
  , gtk
  , ibus
  , inputproto
  , lcms2
  , libcanberra
  , libgudev
  
negative.code:     gsettings-desktop-schemas
      gtk
      #ibus
      lcms2
      libcanberra
      libgudev
  