anchor.diff:  , opengl-dummy
   , wayland
   , wayland-protocols
  +, zlib
   }:
   
   let
  
positive.code:     harfbuzz_lib
      libpng
      libx11
      libxcursor
      libxi
      libxinerama
  
negative.code: , harfbuzz_lib
  , libpng
  , libx11
  , libxcb
  , libxcursor
  , libxi
  , libxinerama
  