anchor.diff: -{ fetchurl, lib, unzip, nettools, pythonPackages }:
  +{ fetchurl, lib, unzip, nettools, pythonPackages, texinfo }:
   
   # FAILURES: The "running build_ext" phase fails to compile Twisted
   # plugins, because it tries to write them into Twisted's (immutable)
  
positive.code:     sha256 = "0x9f1kjym1188fp6l5sqy0zz8mdb4xw861bni2ccv26q482ynbks";
    };
  
    patchPhase = ''
      sed -i "src/allmydata/util/iputil.py" \
          -es"|_linux_path = '/sbin/ifconfig'|_linux_path = '${nettools}/bin/ifconfig'|g"
  
negative.code:     sed -i 's/"pycrypto.*"/"pycrypto"/' src/allmydata/_auto_deps.py
    '';
  
    nativeBuildInputs = with pythonPackages; [ sphinx texinfo ];
  
    buildInputs = with pythonPackages; [ unzip numpy mock ];
  
    # The `backup' command requires `sqlite3'.
  