anchor.diff:  
     postPatch = ''
       substituteInPlace fdroidserver/common.py --replace "FDROID_PATH = os.path.realpath(os.path.join(os.path.dirname(__file__), '..'))" "FDROID_PATH = '$out/bin'"
  -    substituteInPlace setup.py --replace "pyasn1-modules >= 0.2.1, < 0.3" "pyasn1-modules"
     '';
   
     preConfigure = ''
  
positive.code:     homepage = "https://f-droid.org";
      description = "Server and tools for F-Droid, the Free Software repository system for Android";
      license = licenses.agpl3;
      maintainers = [ lib.maintainers.pmiddend ];
    };
  
  }
  
negative.code:     androguard
      clint
      defusedxml
      GitPython
      libcloud
      mwclient
  