anchor.diff:      "mirror://gnu/coreutils/coreutils-${version}.tar.xz"
     ];
   
  -  version = "8.28";
  +  version = "8.29";
   in
   stdenv.mkDerivation rec {
     name = "coreutils-${version}";
  
positive.code:   src = fetchurl {
      urls = tarballUrls version;
      hashOutput = false;
      sha256 = "1117b1a16039ddd84d51a9923948307cfa28c2cea03d1a2438742253df0a0c65";
    };
  
    nativeBuildInputs = [
      perl
    ];
  
    buildInputs = [
      acl
  
negative.code:   passthru = {
      srcVerification = fetchurl rec {
        failEarly = true;
        urls = tarballUrls "8.29";
        pgpsigUrls = map (n: "${n}.sig") urls;
        pgpKeyFingerprint = "6C37 DC12 121A 5006 BC1D  B804 DF6F D971 3060 37D9";
        inherit (src) outputHashAlgo;
        outputHash = "92d0fa1c311cacefa89853bdb53c62f4110cdfda3820346b59cbd098f40f955e";
      };
    };
  
  