---
model: openai/gpt-6-astra
service: opencode
scope: config
substantive: true
git_ref: dd758da5
raw_file: 20260919_trio_reason_minimum.raw.md
---

## Prompt

Build on the human's cancellation-reason/context-status prototype,
keeping the minimum Trio version bump separate from context changes.

## Response summary

Require Trio >=0.34.0, the installed version whose object-valued
cancellation-reason behavior was inspected and exercised. Update the
lock with uv lock --upgrade-package trio==0.34.0. The initial offline
attempt could not resolve uncached registry metadata; normal resolution
updated Trio alone as a package version, also synchronizing an existing
py-multibase requirement in lock metadata. No environment was synced.

## Files changed

- pyproject.toml: Trio minimum and explanatory dependency comment.
- uv.lock: Trio package metadata and project requirement synchronization.

## Human contributions

The human proposed a downstream experiment, explicitly accepted the
implementation-dependent nature of non-string reason payloads, and
required the dependency bump and context code to be separate commits.

## Limit

The minimum selects a verified implementation. It does not turn arbitrary
object reasons into a documented stable Trio public contract.