astral-sh/ty 0.0.1-alpha.24

on GitHub

Release Notes

Released on 2025-10-23.

Breaking changes

• Rename unknown-rule lint to ignore-comment-unknown-rule (#20948)

Type inference and diagnostics

• Infer a type of Self for unannotated self parameters in methods (#20922)
• Prefer the declared type over the inferred type for invariant collection literals (#20927)
• Use declared variable types as bidirectional type context for solving type variables (#20796)
• Support dataclass_transform for base class models (#20783)
• Support dataclass-transform field_specifiers (#20888)
• dataclass_transform support for fields with an alias (#20961)
• Add support for legacy namespace packages (#20897)
• Add suggestion to "unknown rule" diagnostics (#20948)
• Improve error messages for "unresolved attribute" diagnostics (#20963)
• Avoid unnecessarily widening generic specializations (#20875)
• Truncate Literal type display in some situations (#20928)

Bug fixes

• Fix panic involving cyclic TypeVar default (#20967)
• Fix panic involving ever-growing default types (#20991)
• Fix panic involving infinitely expanding implicit attribute types (#20988)
• Fix autocomplete suggestions when the cursor is at the end of a file (#20993)
• Fix inconsistent highlighting of self (#20986)
• Fix out-of-order semantic token for function with regular argument after kwargs (#21013)
• Fix panic on recursive class definitions in a stub that use constrained type variables (#20955)
• Fix panic when attempting to validate the members of a protocol that inherits from a protocol in another module (#20956)
• Fix rare hang relating to multithreading (#21038)
• Fix non-deterministic overload function inference (#20966)
• Fix auto-import edits made by autocompletions for files with an existing from __future__ import (#20987)

LSP server

• Support goto-definition for binary and unary operators (#21001)
• Support goto-definition on vendored typeshed stubs (#21020)
• Provide completions on TypeVars (#20943)
• Display variance when hovering over type variables (#20900)
• Avoid sending an unnecessary "clear diagnostics" message for clients supporting pull diagnostics. (#20989)

Other changes

• Report continue and break statements outside loops as syntax errors (#20944)

Contributors

• @TaKO8Ki
• @sharkdp
• @InvalidPathException
• @AlexWaygood
• @mtshiba
• @ibraheemdev
• @Gankra
• @MichaReiser

Install ty 0.0.1-alpha.24

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/ty/releases/download/0.0.1-alpha.24/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/ty/releases/download/0.0.1-alpha.24/ty-installer.ps1 | iex"

Download ty 0.0.1-alpha.24