⬆️ deps: bump Python dev dependencies

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ruff (source, changelog)	>=0.16.9 → >=0.16.10
ty (changelog)	>=0.0.84 → >=0.0.85

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Release Notes

astral-sh/ruff (ruff)

v0.16.10

Compare Source

Released on 2026-10-01.

Preview features

• Add a migration guide for categories (#​28087)
• [pyupgrade] Add rule for context manager iterator annotations (UP052) (#​29000)

Performance

• Reduce memory used by diagnostics (#​28951)

Server

• Avoid running uv format in untrusted workspaces (#​28873)

Documentation

• Fix links to moved changelog sections and renamed mdtests (#​28941)
• Add Python 3.15 as a supported version (#​28907)
• Add ty as a type checker example (#​28906)

Other changes

• Update Rust toolchain to 1.99 and MSRV to 1.97 (#​29047)

Contributors

• @​ntBre
• @​spaceone
• @​HardMax71
• @​charliermarsh

astral-sh/ty (ty)

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• Explain outdated uv versions in metadata errors (#​28959)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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