anchor.diff:      zlib
     ];
   
  -  meta = with stdenv.lib; {
  +  meta = with lib; {
       homepage = http://librsync.sourceforge.net/;
       license = licenses.lgpl2Plus;
       description = "Implementation of the rsync remote-delta algorithm";
  
positive.code: { stdenv
  , cmake
  , fetchFromGitHub
  , ninja
  , perl
  
  
negative.code: }:
  
  let
    version = "2.0.2";
  in
  stdenv.mkDerivation rec {
    name = "librsync-${version}";
  
    src = fetchFromGitHub {
      version = 5;
      owner = "librsync";
      repo = "librsync";
      rev = "v${version}";
      sha256 = "8b487cd533c5c8a2f7a0668dddf3b36bff6bbbdb47ebfcf7f69d9f2fd9a77837";
    };
  
    nativeBuildInputs = [
  