⬆️ Update dependency ty to v0.0.86

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ty (changelog)	==0.0.84 → ==0.0.86

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Release Notes

astral-sh/ty (ty)

v0.0.86

Compare Source

Released on 2026-10-09.

The executables in our macOS and Windows release archives and ty wheels are now code-signed.
macOS executables are signed with an Apple Developer ID certificate and notarized by Apple. Windows
executables have timestamped Authenticode signatures from Azure Artifact Signing. This enables
verification of the release publisher and binary integrity, supports publisher-based allowlisting,
and should reduce security warnings and antivirus false positives.

Bug fixes

• Infer empty collection branches from nonempty literals (#​29131)
• Invalidate dependency metadata when environments change (#​29126)
• Preserve final attribute restrictions on composite types (#​29135)
• Preserve recursive structure in Annotated values (#​29058)
• Specialize inherited dataclass field converters (#​29192)

LSP server

• Show documentation for annotation operators on hover (#​29185)

Core type checking

• Check attribute and property override types (#​28556)
• Narrow tuple unions through truthiness and type checks (#​29125)
• Preserve literal types when consuming dictionary literals (#​29145)
• Preserve non-boolean comparison results for intersections (#​28045)
• Preserve receiver specializations when calling unions of bound methods (#​29015)
• Represent uninhabited truthiness explicitly (#​28843)
• Solve validity type context through constraint sets (#​28909)

Performance

• Avoid recursion guards for non-generic nominal targets (#​29202)
• Check exact exclusions before intersection positives (#​29195)

Memory usage improvements

• Share constraints in retained sequent maps (#​28966)

Other changes

• Update the default Python version to 3.15 (#​28792)
• Update to Unicode 17 (#​21229, #​28784)
• Always show fixes in the CLI (#​27810)

Contributors

• @​gorewilliams
• @​carljm
• @​AlexWaygood
• @​ibraheemdev
• @​zsol
• @​charliermarsh

v0.0.85

Compare Source

Released on 2026-10-06.

Preview features

• Refresh uv project metadata when uv files change (#​28529)

Bug fixes

• Avoid recursive lambda class decorator panics (#​28984)
• Compare observable notebook state for equality (#​28874)
• Detect recursive alias cycles through intersections (#​28916)
• Fix anchoring of include and exclude patterns after the project's root changed (#​28995)
• Fix stack overflow when inferring dynamic class metaclasses (#​28917)
• Normalize recursive dataclass transform metadata (#​28920)
• Normalize recursive TypedDicts during cycle recovery (#​28918)
• Preserve cycle markers in ParamSpec specialization (#​29024)

CLI

• Prefer existing @​ paths over response files in Ruff and ty (#​28877)

LSP server

• Add namespace package support to import completions. (#​28202)
• Avoid stale I/O diagnostics when closing deleted files (#​28988)
• Contain rendered code within Markdown fences (#​28869)
• Refresh Python settings when virtual environments change (#​28650)

Diagnostic improvements

• Add opt-in truthiness-test-of-none-union rule (#​28889)
• Avoid disjoint-cast diagnostics in situations where the value could have been inferred as being compatible with the casted type if it had only been inferred with the right type context (#​28851)
• Bound nested callable signature display (#​29049)
• Explain outdated uv versions in metadata errors (#​28959)
• Improve display of string literal types that include unicode characters or double quotes (#​29089)
• Improve uv metadata diagnostics (#​28990)
• Preserve constrained type-variable failure diagnostics (#​28768)
• Preserve generic inference errors during diagnostic recovery (#​28811)
• Report deprecated overloads in decorator applications (#​28999)

Core type checking

• Bound methods without a receiver are not callable (#​28981)
• Fix member lookup on union-bounded type variables (#​29018)
• Fix type variable inference for final class objects (#​29097)
• Freshen ParamSpec identities consistently (#​28826)
• Honor generic property setters in protocol compatibility (#​28562)
• Infer nominal generic specializations from bounded type variables (#​28812)
• Inherit annotations for unannotated subclass defaults (#​28575)
• Keep unresolved TypeIs targets provisional (#​29066)
• Limit wildcard exports using literal __all__ (#​28972)
• Narrow later match cases after always-true guards (#​28960)
• Pass generic context to call inference solver (#​29065)
• Preserve captured variables in ParamSpec comparisons (#​28827)
• Preserve intersection receivers in implicit dunder calls (#​28833)
• Preserve literal unpacking during call analysis (#​28821)
• Preserve recursive type context during constructor inference (#​28903)
• Preserve tuple shapes when slicing NewTypes (#​29091)
• Preserve tuple subclass identity during type expansion (#​29090)
• Promote bounded type variables to declared constraints (#​28814)
• Propagate outer type context through cast calls (#​28855)
• Recognize bare TypeVarTuples in materialization checks (#​28815)
• Retain individual overload argument expansion outcomes (#​28825)
• Specialize instance members once (#​29043)
• Specialize Self bounds through generic type aliases (#​28890)
• Support slots_default in dataclass_transform (#​28885)
• Sync vendored typeshed stubs (#​29032). Typeshed diff
• Sync vendored typeshed stubs (#​29042). Typeshed diff
• Validate call arguments once after inference (#​28824)
• Validate union operands involving None (#​28931)

Performance

• Avoid expanding recursive protocol materializations (#​29026)
• Avoid repeated work in nested match patterns (#​28926)
• Cache the flattened module list (#​28932)
• Index nonlocal bindings when sweeping snapshots (#​28935)
• Skip descendant searches for leaf modules (#​28845)
• Skip independent constraint-pair derivation (#​28950)
• Skip storing default definition states (#​28934)

Memory usage improvements

• Avoid caching empty sequent maps (#​28949)
• Avoid retaining docstring literal types (#​28944)
• Compact bound-method receivers (#​28969)
• Move ParamSpec signature metadata to extras (#​28970)
• Release closed module ASTs synchronously during auto-import discovery (#​28714)
• Skip caching trivially assignable types (#​28936)

Contributors

• @​dhruvmanila
• @​carljm
• @​sharkdp
• @​gorewilliams
• @​AlexWaygood
• @​ibraheemdev
• @​MichaReiser
• @​charliermarsh
• @​zsol
• @​lerebear

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[codspeed]

Merging this PR will not alter performance

⚠️ 1 benchmark spent significant time in system calls

System calls cannot be consistently instrumented, so they are not included in the measure, which understates the real cost. Please switch to the Walltime instrument to accurately measure system calls.

Measurement and system calls

• test_includes

✅ 16 untouched benchmarks

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_{Comparing renovate/ty-0.x (3c0e1f9) with main (4f82eea)}

[frenck]

@copilot can you fix the CI issue?

[Copilot]

@copilot can you fix the CI issue?

Fixed the ty 0.0.85 deprecation error by annotating _origin with Generator[None, None, None]. Commit: 4e564ed.