anchor.diff:      xorg.libXxf86vm
       wayland
       wayland-protocols
  +    xorgproto
       zlib
     ] ++ optionals (buildConfig != "opengl-dummy") [
       elfutils
  
positive.code: , wayland
  , wayland-protocols
  , xorg
  , zlib
  
  , buildConfig
  
negative.code:   ];
  
    buildInputs = [
      expat
      libdrm
      libx11
      libxcb
  