anchor.diff:      description = "Improved version of the X-Ray Engine, the game engine used in the world-famous S.T.A.L.K.E.R. game series by GSC Game World";
       homepage = "https://github.com/OpenXRay/xray-16/";
       license = licenses.unfree // {
  -      url = "https://github.com/OpenXRay/xray-16/blob/xd_dev/License.txt";
  +      url = "https://github.com/OpenXRay/xray-16/blob/${version}/License.txt";
       };
       maintainers = with maintainers; [ OPNA2608 ];
       platforms = [ "x86_64-linux" "i686-linux" ];
  
positive.code:     libjpeg
      libogg
      pcre
    ] ++ lib.optionals enableMultiplayer [
      ancientCryptopp
    ];
  
    # Crashes can happen, we'd like them to be reasonably debuggable
    cmakeBuildType = "RelWithDebInfo";
    dontStrip = true;
  
    cmakeFlags = [
      "-DUSE_CRYPTOPP=${if enableMultiplayer then "ON" else "OFF"}"
    ] ++ lib.optionals enableMultiplayer [
      "-DCMAKE_INCLUDE_PATH=${ancientCryptopp}/include/cryptopp"
    ];
  
    postInstall = ''
      # needed because of SDL_LoadObject library loading code
  
negative.code:     fetchSubmodules = true;
      sha256 = "07qj1lpp21g4p583gvz5h66y2q71ymbsz4g5nr6dcys0vm7ph88v";
    };
  
    nativeBuildInputs = [
      cmake
  