anchor.diff:  
     src = fetchurl {
       url = "http://download.flexibee.eu/download/${majorVersion}/${version}/${pname}-${version}.tar.gz";
  -    sha256 = "1ivhqh1rl4ll0af9nfgfm7f647vc9zk61aplinvz73xb3grb4j6f";
  +    sha256 = "01n2pkh17s2iab7n9xgq9vqcf1fnzmb382zmmd1lwyw3x57f5rq2";
     };
   
     nativeBuildInputs = [ makeWrapper ];
  
positive.code: { stdenv, fetchurl, makeWrapper, jre }:
  
  let
    version = "2019.3.0.3";
    majorVersion = builtins.substring 0 6 version;
  in
  
  
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
    '';
  