anchor.diff:      makeWrapper
     ];
     propagatedBuildInputs = with pkgs; [
  -    mono46
  +    mono54
       sqlite
     ];
   
  
positive.code: { stdenv, fetchurl, pkgs, unzip, sqlite, makeWrapper, mono46, ffmpeg, ... }:
  
  stdenv.mkDerivation rec {
    name = "emby-${version}";
  
negative.code:     mkdir -p $out/bin
      cp -r * $out/bin
  
      makeWrapper "${mono54}/bin/mono" $out/bin/MediaBrowser.Server.Mono \
        --add-flags "$out/bin/MediaBrowser.Server.Mono.exe -ffmpeg ${ffmpeg}/bin/ffmpeg -ffprobe ${ffmpeg}/bin/ffprobe"
    '';
  
  