Incompatible with Python 3.13 alpha (dependency on six.moves and other issues)

$ python3
Python 3.13.0a4+ (heads/main:bb66600558, Mar 12 2024, 14:06:50) [Clang 15.0.0 (clang-1500.1.0.2.5)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> ^D
$ pip install llm

And when I use llm I am greeted with this exception.

Traceback (most recent call last):
  File "/Users/senthilx/cpython/virtualenvs/python313/bin/llm", line 5, in <module>
    from llm.cli import cli
  File "/Users/senthilx/cpython/virtualenvs/python313/lib/python3.13/site-packages/llm/__init__.py", line 16, in <module>
    from .embeddings import Collection
  File "/Users/senthilx/cpython/virtualenvs/python313/lib/python3.13/site-packages/llm/embeddings.py", line 7, in <module>
    from sqlite_utils import Database
  File "/Users/senthilx/cpython/virtualenvs/python313/lib/python3.13/site-packages/sqlite_utils/__init__.py", line 1, in <module>
    from .utils import suggest_column_types
  File "/Users/senthilx/cpython/virtualenvs/python313/lib/python3.13/site-packages/sqlite_utils/utils.py", line 11, in <module>
    from . import recipes
  File "/Users/senthilx/cpython/virtualenvs/python313/lib/python3.13/site-packages/sqlite_utils/recipes.py", line 1, in <module>
    from dateutil import parser
  File "/Users/senthilx/cpython/virtualenvs/python313/lib/python3.13/site-packages/dateutil/__init__.py", line 16, in __getattr__
    return importlib.import_module("." + name, __name__)
           ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/senthilx/cpython/installs/python313/lib/python3.13/importlib/__init__.py", line 88, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/senthilx/cpython/virtualenvs/python313/lib/python3.13/site-packages/dateutil/parser/__init__.py", line 2, in <module>
    from ._parser import parse, parser, parserinfo, ParserError
  File "/Users/senthilx/cpython/virtualenvs/python313/lib/python3.13/site-packages/dateutil/parser/_parser.py", line 50, in <module>
    from .. import tz
  File "/Users/senthilx/cpython/virtualenvs/python313/lib/python3.13/site-packages/dateutil/__init__.py", line 16, in __getattr__
    return importlib.import_module("." + name, __name__)
           ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/senthilx/cpython/installs/python313/lib/python3.13/importlib/__init__.py", line 88, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/senthilx/cpython/virtualenvs/python313/lib/python3.13/site-packages/dateutil/tz/__init__.py", line 2, in <module>
    from .tz import *
  File "/Users/senthilx/cpython/virtualenvs/python313/lib/python3.13/site-packages/dateutil/tz/tz.py", line 21, in <module>
    from six.moves import _thread
ModuleNotFoundError: No module named 'six.moves'

Start by reproducing the reported pip install llm and import failure on Python 3.13, then trace the chain through llm/embeddings.py, sqlite_utils, dateutil, and the six.moves import shown in the traceback. Review the dependency declarations and verify that installing and invoking llm no longer raises this exception on Python 3.13.