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:     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
    '';
  
negative.code: 
    src = fetchurl {
      url = "http://download.flexibee.eu/download/${majorVersion}/${version}/${pname}-${version}.tar.gz";
      sha256 = "01n2pkh17s2iab7n9xgq9vqcf1fnzmb382zmmd1lwyw3x57f5rq2";
    };
  
    nativeBuildInputs = [ makeWrapper ];
  