Python 3.13 breakage

[emilio]

Trying to ./wpt serve (or running WPT from a firefox source tree) with python 3.13 fails with:

Traceback (most recent call last):
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/./wpt", line 10, in <module>
    wpt.main()
    ~~~~~~~~^^
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/tools/wpt/wpt.py", line 211, in main
    script, parser = import_command(prog, command, props)
                     ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/tools/wpt/wpt.py", line 102, in import_command
    mod = __import__(mod_name)
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/tools/serve/__init__.py", line 1, in <module>
    from . import serve  # noqa: F401
    ^^^^^^^^^^^^^^^^^^^
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/tools/serve/serve.py", line 27, in <module>
    from wptserve import server as wptserve, handlers
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/tools/wptserve/wptserve/__init__.py", line 1, in <module>
    from .server import WebTestHttpd, WebTestServer, Router  # noqa: F401
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/tools/wptserve/wptserve/server.py", line 29, in <module>
    from . import routes as default_routes
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/tools/wptserve/wptserve/routes.py", line 1, in <module>
    from . import handlers
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/tools/wptserve/wptserve/handlers.py", line 13, in <module>
    from .request import Authentication
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/tools/wptserve/wptserve/request.py", line 4, in <module>
    import cgi
ModuleNotFoundError: No module named 'cgi'

It seems the cgi module is gone.

Commenting that import out I get:

Traceback (most recent call last):
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/./wpt", line 10, in <module>
    wpt.main()
    ~~~~~~~~^^
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/tools/wpt/wpt.py", line 233, in main
    rv = script(*args, **kwargs)
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/tools/serve/serve.py", line 1426, in run
    with build_config(logger,
         ~~~~~~~~~~~~^^^^^^^^
                      os.path.join(repo_root, "config.json"),
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                      config_cls=config_cls,
                      ^^^^^^^^^^^^^^^^^^^^^^
                      **kwargs) as config:
                      ^^^^^^^^^
  File "/home/emilio/src/moz/gecko-3/testing/web-platform/tests/tools/serve/serve.py", line 1314, in build_config
    rv = config_cls(logger)
TypeError: 'Virtualenv' object is not callable

Which is a new one and not sure how to quite get through.

cc @jgraham

[emilio]

I guess kind of a dupe of #48585

[gsnedders]

I guess kind of a dupe of #48585

Yup.