anchor.diff:  #, libxpm
   , libxrender
   , libxres
  -#, libxshmfence
  +, libxshmfence
   , libxt
   , libxtst
   , nettle
  
positive.code: #, xcbutilimage
  #, xcbutilkeysyms
  #, xcbutilrenderutil
  , xorg
  , xorgproto
  , xtrans
  
negative.code:     xorg.libXpm
      libxrender
      libxres
      libxshmfence
      libxt
      libxtst
      nettle
  