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0.29.0

Cut on 2026-10-05. coxswain-tools, coxswain-graphs and coxswain-cartridges are tagged v0.29.0. coxswain-dash and coxswain-crew stay pinned at v0.28.0. coxswain-tools is published to PyPI from its tag. Status: beta. This release has one headline, and the umbrella's install docs follow it: git and curl are the prerequisites, and uv downloads a managed Python 3.14 when the system one is older.

Python 3.14 is the supported floor. Every Python component requires Python 3.14 or newer, every CI job runs on 3.14, and the old 3.12 floor job becomes a non-blocking 3.15 canary. Coxswain installs through uv tool and the Homebrew tap, which bring their own interpreter, so most installs need nothing new.

Upgrading from 0.28.0. Reinstall with uv tool install --python 3.14 (or uv tool upgrade), which fetches a managed 3.14 if the machine has none. Rebuild any development virtualenv on 3.14. The store schema is unchanged and nothing migrates.

coxswain-cartridges

  • requires-python is >=3.14, CI runs on 3.14, and the floor job becomes a 3.15 canary (cartridges #178).

coxswain-graphs

  • requires-python is >=3.14, CI runs on 3.14, and the floor job becomes a 3.15 canary; the retry helper uses type parameters (graphs #682).

coxswain-tools

  • requires-python is >=3.14 in the pyproject, .python-version and the lock, CI runs on 3.14, and the floor job becomes a 3.15 canary (tools #1320).

coxswain

  • requires-python is >=3.14 in the pyproject and the lock, the releasable workflow runs on 3.14, and the install docs drop the Python prerequisite that uv now covers (coxswain #225).

Components

coxswain-tools, coxswain-graphs and coxswain-cartridges carry the new floor; coxswain-cartridges rejoins at this release from v0.23.1. coxswain-dash and coxswain-crew are unchanged since v0.28.0.