anchor.diff:  { stdenv, fetchurl, makeWrapper, jre }:
   
   let
  -  version = "2019.3.0.3";
  +  version = "2019.3.0.7";
     majorVersion = builtins.substring 0 6 version;
   in
   
  
positive.code: 
    src = fetchurl {
      url = "http://download.flexibee.eu/download/${majorVersion}/${version}/${pname}-${version}.tar.gz";
      sha256 = "1ivhqh1rl4ll0af9nfgfm7f647vc9zk61aplinvz73xb3grb4j6f";
    };
  
    nativeBuildInputs = [ makeWrapper ];
  
negative.code:     cp -R usr/share/flexibee/ $out/
      install -Dm755 usr/bin/flexibee $out/bin/flexibee
      install -Dm755 usr/sbin/flexibee-server $out/bin/flexibee-server
      wrapProgram $out/bin/flexibee --set JAVA_HOME "${jre}"
      wrapProgram $out/bin/flexibee-server --set JAVA_HOME "${jre}"
      runHook postInstall
    '';
  