Simon Willison Blog·Release·2d ago·~1 min read

datasette 1.0a29

12th May 2026

- New

TokenRestrictions.abbreviated(datasette)

utility method for creating"_r"

dictionaries. #2695- Table headers and column options are now visible even if a table contains zero rows. #2701

- Fixed bug with display of column actions dialog on Mobile Safari. #2708

- Fixed bug where tests could crash with a segfault due to a race condition between

Datasette.close()

andDatasette.close()

. #2709

That segfault bug was gnarly. I added a mechanism to Datasette recently that would automatically close connections at the end of each test, but it turned out that introduced a race condition where an in-flight query could sometimes be executing in a thread against a connection while it was being closed. I ended up solving that by having Codex CLI (with GPT-5.5 xhigh) create a minimal Dockerfile that recreated the bug.