astral-sh/ty 0.0.29

on GitHub

Release Notes

Released on 2026-04-05.

Bug fixes

• Avoid special-casing for dataclasses.field if it's not in field_specifiers (#24397)
• Reject unsupported environment.python-version values in configuration files (#24402)
• Respect supported lower bounds from requires-python (#24401)

Core type checking

• Add support for types.new_class (#23144)
• Fix PEP 695 type aliases in with statement (#24395)
• Respect __new__ and metaclass __call__ return types (#24357)
• Treat enum attributes with type annotations as members (#23776)

Contributors

• @charliermarsh
• @carljm

Install ty 0.0.29

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.29/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.29/ty-installer.ps1 | iex"

Download ty 0.0.29

Verifying GitHub Artifact Attestations

The artifacts in this release have attestations generated with GitHub Artifact Attestations. These can be verified by using the GitHub CLI:

gh attestation verify <file-path of downloaded artifact> --repo astral-sh/ty

You can also download the attestation from GitHub and verify against that directly:

gh attestation verify <file-path of downloaded artifact> --bundle <file-path of downloaded attestation>