sqlite-utils 4.2.1

Release: https://github.com/simonw/sqlite-utils/releases/tag/4.2.1">sqlite-utils 4.2.1

Fixes a crashing bug in https://simonwillison.net/2026/Aug/13/sqlite-utils/">sqlite-utils 4.2.

I'd introduced code that looks like this:

from typing_extensions import Self

It turned out the https://pypi.org/project/typing-extensions/">typing-extensions package was not listed as a dependency for sqlite-utils - it was installed by one of the other dependencies in the https://github.com/simonw/sqlite-utils/blob/56dd09702fdb9e899f577ffd51693c1f2176cb08/pyproject.toml#L34-L55">dev dependency group, but when you uvx sqlite-utils directly you don't get those dependencies.

As part of fixing this I figured out how to run a smoke test to ensure the CLI tool still works even without those dev dependencies, which can be run from the project checkout:

uv run --isolated --no-default-groups sqlite-utils --help

The --no-default-groups argument prevents it from installing that default dev group, and --isolated means that even if there is a .venv/ folder containing extra dependencies they will be ignored for the duration of that uv run command.

Tags: https://simonwillison.net/tags/packaging">packaging, https://simonwillison.net/tags/python">python, https://simonwillison.net/tags/sqlite-utils">sqlite-utils, https://simonwillison.net/tags/uv">uv