anchor.diff:  , krb5_lib
   , libsodium
   , libunwind
  -, util-linux_lib
   }:
   
   let
  -  version = "4.2.5";
  +  version = "4.3.1";
   in
   stdenv.mkDerivation rec {
     name = "zeromq-${version}";
  
positive.code:         outputHash
          outputHashAlgo
          urls;
        md5Url = "https://github.com/zeromq/libzmq/releases/download/v${version}/"
          + "MD5SUMS";
        sha1Url = "https://github.com/zeromq/libzmq/releases/download/"
          + "v${version}/SHA1SUMS";
        failEarly = true;
      };
    };
  
  
negative.code:     url = "https://github.com/zeromq/libzmq/releases/download/v${version}/"
        + "${name}.tar.gz";
      hashOutput = false;
      sha256 = "bcbabe1e2c7d0eec4ed612e10b94b112dd5f06fcefa994a0c79a45d835cd21eb";
    };
  
    buildInputs = [
      krb5_lib
      libsodium
      libunwind
    ];
  
    configureFlags = [
  