anchor.diff:      license = [ lib.licenses.gpl2Plus /* or */ "TGPPLv1+" ];
       maintainers = with lib.maintainers; [ MostAwesomeDude ];
       platforms = lib.platforms.gnu ++ lib.platforms.linux;
  -    broken = true;
     };
   }
  
positive.code: { fetchurl, lib, nettools, pythonPackages, texinfo }:
  
  # FAILURES: The "running build_ext" phase fails to compile Twisted
  # plugins, because it tries to write them into Twisted's (immutable)
  # store path. The problem appears to be non-fatal, but there's probably
  # some loss of functionality because of it.
  
  pythonPackages.buildPythonApplication rec {
    version = "1.13.0";
    pname = "tahoe-lafs";
    namePrefix = "";
  
    src = fetchurl {
      url = "https://tahoe-lafs.org/downloads/tahoe-lafs-${version}.tar.bz2";
      sha256 = "11pfz9yyy6qkkyi0kskxlbn2drfppx6yawqyv4kpkrkj4q7x5m42";
    };
  
    outputs = [ "out" "doc" "info" ];
  
negative.code:       cd src/allmydata/test
  
        # Buggy?
        rm cli/test_create.py test_client.py
  
        # These require Tor and I2P.
        rm test_connections.py test_iputil.py test_hung_server.py test_i2p_provider.py test_tor_provider.py
  
        # Fails due to the above tests missing
        rm test_python3.py
  
        # Expensive
        rm test_system.py
      )
    '';
  
    nativeBuildInputs = with python3Packages; [ sphinx texinfo ];
  
    # The `backup' command requires `sqlite3'.
    propagatedBuildInputs = with python3Packages; [
      appdirs beautifulsoup4 characteristic distro eliot fixtures foolscap future
      html5lib magic-wormhole netifaces pyasn1 pycrypto pyutil pyyaml recommonmark
      service-identity simplejson sphinx_rtd_theme testtools treq twisted zfec
      zope_interface
    ];
  
    checkInputs = with python3Packages; [ mock hypothesis twisted ];
  
    # Install the documentation.
    postInstall = ''
  