⬆️ deps: Update Python dev dependencies

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
pytest-rerunfailures	>=16.6 → >=16.6.1
ruff (source, changelog)	>=0.16.5 → >=0.16.6
ty (changelog)	>=0.0.77 → >=0.0.79

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Release Notes

pytest-dev/pytest-rerunfailures (pytest-rerunfailures)

v16.6.1

Compare Source

Bug Fixes
+++++++++

• Ensure teardown reports are passed to pytest_runtest_logreport for rerun
  attempts. (#&#8203;237 <https://github.com/pytest-dev/pytest-rerunfailures/issues/237>_)
• Prevent superseded built-in subtest failures from remaining in the final test
  result when rerunning tests with pytest-xdist. (#&#8203;350 <https://github.com/pytest-dev/pytest-rerunfailures/issues/350>_)
• Restore module, class, and session scoped fixture teardown when a flaky
  marker condition is falsy. (#&#8203;351 <https://github.com/pytest-dev/pytest-rerunfailures/issues/351>_)
• Restore module, class, and session scoped fixture teardown when an error
  raised during teardown rules out a re-run. (#&#8203;356 <https://github.com/pytest-dev/pytest-rerunfailures/issues/356>_)
• Keep module, class, and session scoped fixtures alive across re-runs of a
  test whose call phase failed through subtests only. (#&#8203;357 <https://github.com/pytest-dev/pytest-rerunfailures/issues/357>_)
• Authenticate xdist StatusDB connections with a per-session token. (#&#8203;358 <https://github.com/pytest-dev/pytest-rerunfailures/issues/358>_)
• Ensure negative rerun counts do not skip the initial test execution. (#&#8203;359 <https://github.com/pytest-dev/pytest-rerunfailures/issues/359>_)

Misc
++++

• Replace deprecated Config.getvalue() calls with Config.getoption().
  (#&#8203;345 <https://github.com/pytest-dev/pytest-rerunfailures/issues/345>_)

astral-sh/ruff (ruff)

v0.16.6

Compare Source

Released on 2026-09-03.

Preview features

• Move pytest-fixture-autouse to the restriction category (#​28219)
• [flake8-pytest-style] Add an autofix for PT020 (#​27993)
• [flake8-tidy-imports] Prevent fix loop between TID254 and TID255 (#​28262)
• [isort] Exclude pragma comments from line length calculation (I001) (#​27313)

Bug fixes

• Validate unary expressions when parsing (#​28233)
• [flake8-async, pylint] Recognize builtins.open (ASYNC230, PLW1514) (#​28021)
• [flake8-bugbear] Fix panic on match subjects (B031) (#​27781)
• [flake8-datetimez] Reject tzinfo=None for datetime bounds (DTZ901) (#​28022)
• [flake8-pytest-style] Avoid duplicate PT017 diagnostics (#​27918)
• [ruff] Remove lint.external hint for Ruff-specific suppressions (RUF102) (#​27923)

Rule changes

• [flake8-use-pathlib] Add display-only fix for os.listdir (PTH208) (#​28027)

Documentation

• Add another example and glob reference for lint.per-file-ignores (#​28106)
• Add duplicate work guidance (#​28229)
• [flake8-async] Document thread offloading (ASYNC240) (#​28008)
• [pyupgrade] Clarify default encoding argument handling (UP012) (#​27315)

Other changes

• Allow unary plus in match patterns on Python 3.15 (#​28231)

Contributors

• @​flying-sheep
• @​pikammmmm
• @​fly1d
• @​waterWang
• @​Pierre-Sassoulas
• @​ntBre
• @​jelle-openai
• @​ericbuehl
• @​tjkuson
• @​AbhinavMir
• @​Whning0513
• @​chirizxc

astral-sh/ty (ty)

v0.0.79

Compare Source

Released on 2026-09-07.

Bug fixes

• Avoid dict keyword-call panics when typing is shadowed (#​28292)
• Discover configs in models derived from legacy generic classes (#​28397)
• Normalize recursive collection-use constraints (#​28332)
• Recover cycles when constructing known class instances (#​28289)

CLI

• Embed archive checksums in the shell installer (#​4458)

Diagnostic improvements

• Add Literal fixes for diagnostics flagging invalid type annotations (#​28185)
• Add await fixes for redundant conditions (#​28169)
• Add assert_never fixes for redundant final elif branches (#​28178)
• Add defensive assertion fallback for redundant elif fixes (#​28179)
• Add rules to detect always-truthy and always-falsy conditions (#​28034)
• Preserve deprecations on decorated callables (#​28256)
• Require a direct dependency for reveal_type backport fixes (#​28177)
• Suggest variable-length tuple annotations for redundant conditions (#​28168)

Core type checking

• Align TypeIs and isinstance narrowing (#​28193)
• Avoid falling back to Unknown when collecting type context constraints (#​28297)
• Ensure f is identity(f) evaluates to Literal[True] (#​28360)
• Fix callable specialization with union-valued ParamSpec (#​28085)
• Infer variance through recursive protocols (#​28077)
• Narrow types with ordered length comparisons (#​28264)
• Preserve gradual type context during generic call inference (#​28091)
• Preserve nominal subtyping for top-materialized protocols (#​28271)
• Preserve outer type variables during ParamSpec inference (#​28306)
• Preserve protocol intersections when narrowing gradual types (#​28391)
• Promote literals in nested (non-covariant) positions (#​28389)
• Reject missing attributes on type[] aliases (#​28267)
• Solve formal unions using constraint-sets (#​28312)
• Sync vendored typeshed stubs (#​28331). Typeshed diff

Performance

• Avoid unnecessary work when building specializations (#​28369)
• Bypass materialization queries for simple types (#​28367)
• Cache exception suppression for context managers (#​28376)
• Intern statement call predicates (#​28373)
• Lazily compute argument-context specializations (#​28378)
• Pre-size packed AST index chunks (#​28372)
• Reduce repeated work in use-def merges (#​28365)
• Skip decorator flags query for undecorated methods (#​28338)

Memory usage improvements

• Avoid caching simple type specializations (#​28333)
• Box cached MRO error details (#​28351)
• Reuse generic aliases as MRO query keys (#​28350)
• Reuse interned bound method signatures (#​28346)
• Reuse stored function signatures without caching duplicates (#​28347)
• Share retained use-def tables across scopes (#​28313)
• Store single narrowing operations inline (#​28345)
• Store uncommon signature metadata out of line (#​28339)

Other changes

• Declare support for Python 3.15 (#​4476)

Contributors

• @​carljm
• @​sharkdp
• @​charliemarsh-oai
• @​zsol
• @​charliermarsh
• @​ibraheemdev
• @​AlexWaygood

v0.0.78

Compare Source

Released on 2026-09-02.

Bug fixes

• Defer decorator-call diagnostics to avoid recursive-default cycles (#​28226)
• Make cyclic intersection simplification deterministic (#​28156)
• Stabilize cyclic terminal-call reachability (#​28216)

Preview features

• Refresh uv workspace metadata when dependencies change (#​28224)

Diagnostics

• Add a new disjoint-cast rule (#​28129)
• Report deprecated property accessors on intersections (#​28250)
• Report deprecations for implicit constructor calls (#​28251)
• Report deprecations for overloads, operators, and properties (#​28134)
• Respect overload selection in deprecation diagnostics (#​28148)

Core type checking

• Fix negative narrowing for protocols with gradual members (#​28198)
• Preserve ParamSpec bindings inferred against type context (#​28084)
• Preserve generic protocol materialization relations (#​28246)
• Preserve uncertain branches during quantification (#​28211)
• Respect type variables in top/bottom materializations of invariant generics (#​28072)
• Sync vendored typeshed stubs (#​28217). Typeshed diff
• Treat captured bound-method receivers covariantly (#​28180)
• Unsound intersection simplification for generic iterables (#​28068)
• Validate type variable scopes in constructors and aliases (#​28130)
• lambda functions are always truthy (#​28254)

Performance

• Optimize materialized recursive protocol comparisons (#​28079)
• Optimize recursive protocol checks for nested type variables (#​28257)

Contributors

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

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