anchor.diff: -{ lib, stdenv, fetchPypi, buildPythonPackage, isPy3k
  +{ lib
  +, stdenv
  +, fetchPypi
  +, buildPythonPackage
  +, isPy3k
   , jaraco_functools
   , jaraco_text
   , more-itertools
  
positive.code:     rm pytest.ini
    '';
  
    disabledTests= [
      "tls" # touches network
      "peercreds_unix_sock" # test urls no longer allowed
    ] ++ lib.optionals stdenv.isDarwin [
      "http_over_https_error"
      "bind_addr_unix"
    ];
  
    # Some of the tests use localhost networking.
  
negative.code:     trustme
    ];
  
    # Disable doctest plugin because times out
    # Disable xdist (-n arg) because it's incompatible with testmon
    # Deselect test_bind_addr_unix on darwin because times out
  