anchor.diff:      "--disable-symbol-lookup"
       #"--enable-some-floating-point"
       "--with-x"
  -    #"--with-skia=yes"
  -    #"--with-skia-build-type=Release"
  +    #(wtFlag "skia" true "yes")
  +    #(wtFlag "skia-build-type" true "Release")
       "--without-gallium"
     ];
   
  
positive.code:     libspectre
      lzo
      mesa_noglu
      xorg.libX11
      xorg.libxcb
      xorg.libXext
      xorg.libXrender
      xorg.pixman
  
negative.code: , glib
  , libpng
  , libspectre
  , libx11
  , libxcb
  , lzo
  , mesa_noglu
  , xorg
  