⬆️ 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)	>=0.0.75 → >=0.0.78

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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• Prevent superseded built-in subtest failures from remaining in the final test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)

v0.0.78

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

v0.0.77

Compare Source

Released on 2026-08-31.

Bug fixes

• Bound recursive protocol traversal in generic intersections (#​28215)
• Preserve recursion guards across nested type operations (#​28150)
• Preserve syntax and comments when removing redundant casts (#​28145)
• Stabilize recursive receiver inference (#​28042)
• Stabilize condition truthiness during cyclic inference (#​28212)

Core type checking

• Preserve generic receivers in implicit __init_subclass__ calls (#​28138)
• Preserve specialization for inherited TypedDict methods (#​28111)
• Propagate deletions through nested loop headers (#​28044)

Performance

• Avoid repeated inference for literal union call results (#​28196)

Contributors

• @​charliermarsh
• @​carljm

v0.0.76

Compare Source

Released on 2026-08-31.

Preview features

• Add a missing-direct-dependency rule (#​28001)
• Cancel superseded queued uv requests (#​28108)
• Check direct dependencies in PEP 723 scripts (#​28136)
• Fix Goto definition in script dependencies (#​27747)
• Move script environment initialization to the CLI and LSP (#​28038)
• Refresh uv project metadata in the background (#​27933)
• Synchronize PEP 723 script environments in the language server (#​27619)
• Warn when uv metadata cannot support dependency checks (#​28133)

Bug fixes

• Avoid panics on incomplete protocol type parameter lists (#​28088)
• Fix auto-completion panic involving bare declarations (#​28191)
• Guard recursive meta-type expansion (#​28143)
• Preserve parentheses when removing redundant casts (#​28092)

LSP server

• Add "Find references" support for pytest fixtures (#​28075)
• Highlight PEP 723 script metadata as TOML (#​27746)
• Synchronize saved script metadata on open (#​27873)

Core type checking

• Apply mixin specialization when validating enum members (#​28101)
• Bind Self through generic type aliases (#​28117)
• Infer lambda parameters through callable type aliases (#​28109)
• Intersection simplifications with subtype-related generic specializations (#​26880)
• Invalidate member narrowing across loop iterations (#​28009)
• Narrow functional enum members in == and match (#​28103)
• Only treat recursive types with unbounded specializations as fallback cycles (#​27538)
• Preserve Final variance in stubs (#​28119)
• Preserve inferred types for unknown class-decorator results (#​28067)
• Preserve list literal positions in starred unpacking (#​28061)
• Preserve short-circuit reachability for direct conditions (#​28082)
• Preserve type variables in bounded generic defaults (#​28122)
• Reject circular type alias definitions (#​28140)
• Reject class access to generic instance attributes (#​28123)
• Use the subclass receiver when checking method overrides (#​28124)
• Validate declared variance in method signatures (#​28116)

Performance

• Avoid cubic narrowing with repeated assignments and context managers (#​27787)
• Avoid repeated traversal of shared alias arguments (#​28147)
• Reject impossible eager protocol comparisons early (#​28081)

Contributors

• @​AlexWaygood
• @​MichaReiser
• @​charliermarsh
• @​BitWeaverDev
• @​gorewilliams
• @​zsol
• @​malkin0xb8
• @​sharkdp
• @​mtshiba
• @​carljm
• @​lerebear
• @​jamtat

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