Release Notes
Released on 2026-10-15.
Bug fixes
- Avoid panics and hangs involving recursive type aliases and intersections (#29057)
- Fix false
invalid-mutable-overrideerrors when overridingobjectattributes (#29373) - Fix attribute assignment and deletion checks through bounded or constrained type variables (#29345)
- Detect instance layout conflicts hidden by additional base classes (#29372)
- Fix false missing-argument errors when Pydantic models override inherited attributes with
ClassVar(#29367) - Preserve known module owners when uv reports owners outside the resolution (#29296)
Diagnostic improvements
- Report assignments to individually frozen Pydantic fields (#29305)
Core type checking
- Improve type inference for intersection arguments to generic functions (#28677)
- Preserve inherited annotations for unannotated subclass attributes when a base has type
AnyorUnknown(#28973) - Preserve common return-type structure when gradual arguments match multiple overloads (#29342)
- Check upper bounds when inferring type variables from caller type variables (#29014)
Contributors
Install ty 0.0.88
Install prebuilt binaries via shell script
curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.88/ty-installer.sh | shInstall prebuilt binaries via powershell script
powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.88/ty-installer.ps1 | iex"Download ty 0.0.88
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/tyYou 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>