astral-sh/ty 0.0.70

on GitHub

Release Notes

Released on 2026-08-10.

LSP server

• Enable and downrank auto-import completions from stub-only modules (#27433)
• Fix signature help at end of file (#27622)
• Normalize type labels in structured docstrings (#26923)
• Preserve typing-only completion ranking in TYPE_CHECKING blocks (#27549)

CLI

• Avoid deadlock when scheduling watch checks (#27605)

Diagnostics

• Add an opt-in unsound-return-statement lint (#27561)
• Add an opt-in unsound-yield lint (#27593)
• Diagnose invalid __getattr__ calls (#27502)
• Diagnose invalid descriptor __get__ calls (#27400)

Core type checking

• Consider object members in protocol comparisons (#27532)
• Exclude quantified constraints from semantic type walks (#27613)
• Expand Generator aliases when evaluating return, send, and yield types (#27577)
• Infer precise TypedDict key-membership truthiness (#27579)
• Infer variance through type[T] (#27534)
• Preserve contextual inference for declarations in loops (#27594)
• Recognize overlapping NewType types and their underlying values (#27522)
• Require ClassVar declarations for protocol members (#27530)
• Stabilize recursive gradual type alias materialization (#27563)
• Support Annotated inside type[...] (#27629)
• Validate augmented assignment stores (#27545)

Contributors

• @AlexWaygood
• @carljm
• @charliermarsh
• @MichaReiser
• @lerebear

Install ty 0.0.70

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.70/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.70/ty-installer.ps1 | iex"

Download ty 0.0.70

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>