anchor.diff:  }:
   
   let
  -  version = "2.1.0";
  +  version = "2.1.1";
   
     tarballUrls = version: [
       "mirror://gnu/libidn/libidn2-${version}.tar.gz"
  
positive.code:   passthru = {
      srcVerification = fetchurl rec {
        failEarly = true;
        urls = tarballUrls "2.1.0";
        inherit (src) outputHashAlgo;
        outputHash = "032398dbaa9537af43f51a8d94e967e3718848547b1b2a4eb3138b20cad11d32";
        fullOpts = {
          pgpsigUrls = map (n: "${n}.sig") urls;
          pgpKeyFingerprint = "1CB2 7DBC 9861 4B2D 5841  646D 0830 2DB6 A267 0428";
  
negative.code:   src = fetchurl {
      urls = tarballUrls version;
      hashOutput = false;
      sha256 = "95416080329298a13269e13175041b530cec3d98b54cafae9424b8dfd22078b1";
    };
  
    configureFlags = [
  