anchor.diff:  
       outputHashAlgo = "sha256";
       outputHashMode = "recursive";
  -    outputHash = "sha256-4yHN5hYLjatni8seLOHyuEVnxOdNVia6rY3oPewR+20=";
  +    outputHash = "sha256-XFqXjNjPN2vwA3jay7TS79S4FHksjjrODdD/p4oTvpg=";
  +
  +    doCheck = false;
     };
   
   in stdenv.mkDerivation rec {
     inherit pname version src;
   
     buildPhase = ''
  -    mvn -Plinux package --offline -Dmaven.repo.local=$(cp -dpR ${deps}/.m2 ./ && chmod +w -R .m2 && pwd)/.m2
  +    mvn -Plinux package --offline -Dmaven.test.skip=true -Dmaven.repo.local=$(cp -dpR ${deps}/.m2 ./ && chmod +w -R .m2 && pwd)/.m2
     '';
   
     installPhase = ''
  
positive.code:     buildInputs = [ jre ];
  
      buildPhase = ''
        while mvn -Plinux package -Dmaven.repo.local=$out/.m2 -Dmaven.wagon.rto=5000; [ $? = 1 ]; do
          echo "timeout, restart maven to continue downloading"
        done
      '';
  
negative.code: 
  let
    pname = "cryptomator";
    version = "1.6.7";
  
    src = fetchFromGitHub {
      owner = "cryptomator";
      repo = "cryptomator";
      rev = version;
      sha256 = "sha256-hOILOdVYBnS9XuEXaIJcf2bPF72Lcr7IBX4CFCIsC8k=";
    };
  
    # perform fake build to make a fixed-output derivation out of the files downloaded from maven central (120MB)
  