anchor.diff:  { stdenv
   , fetchurl
   , lib
  +#, meson
  +#, ninja
   
   , libdrm
   , libx11
  
positive.code: 
    configureFlags = [
      "--enable-x11"
      "--${boolEn opengl-dummy.glx}-glx"
      "--enable-wayland"
      "--enable-va-messaging"
      "--with-drivers-path=${driverDir}"
    ];
  
    preInstall = ''
      installFlagsArray+=("LIBVA_DRIVERS_PATH=$out/lib/dri")
  
negative.code:         + "${name}.tar.bz2")
      ];
      hashOutput = false;
      sha256 = "99263056c21593a26f2ece812aee6fe60142b49e6cd46cb33c8dddf18fc19391";
    };
  
    #nativeBuildInputs = [
    #  meson
    #  ninja
    #];
  
    buildInputs = [
      libdrm
  