anchor.diff:      libxext
       libxfixes
       xorg.libxshmfence
  +    xorg.libXxf86vm
       wayland
       wayland-protocols
       zlib
     ] ++ optionals (buildConfig != "opengl-dummy") [
  -    dri2proto
  -    dri3proto
       elfutils
       libclc
       libffi
  
positive.code:   ];
  
    buildInputs = [
      expat
      glproto
      libdrm
  
negative.code:     lm-sensors
      presentproto
      xorg.libXvMC
    ];
  
    patches = [
  