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Release Notes
Released on 2026-10-20.
Bug fixes
- Allow subclasses to restore hashability (#29471)
- Avoid crashes when negating recursive aliases (#29429)
- Avoid stack overflow for recursive descriptor setter checks (#29467)
- Defer constructor type variable defaults (#29469)
- Preserve bound receivers for strict signature checks (#29396)
- Preserve read types for dynamic attributes (#29461)
- Reject runtime_checkable on non-protocol classes (#29460)
- Validate TypeAliasType keyword arguments (#29466)
LSP server
- Add return-type inlay hints (#29437)
Other changes
- Adopt stable macOS signing identifiers (#4743)
- Avoid inserting inlay hints containing stub-only types (#29477)
- Filter incompatible union members during union inference (#29344)
- Infer ParamSpecs from call-wide constraints (#28828)
- Mitigate pauses from clearing cached ASTs in more language server operations (#29232)
- Report read-only keys when deleting, popping, or defaulting TypedDict items (#29441)
- Support uv's nested module ownership metadata (#29436)
Contributors
Install ty 0.0.90
Install prebuilt binaries via shell script
curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.90/ty-installer.sh | shInstall prebuilt binaries via powershell script
powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.90/ty-installer.ps1 | iex"Download ty 0.0.90
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>