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This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ty (changelog)	0.0.90 → 0.0.91

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Release Notes

astral-sh/ty (ty)

v0.0.91

Compare Source

Released on 2026-10-22.

Bug fixes

• Improve generics solving when an intersection is passed into a generic call to prefer solving the call to a more precise type when it is safe to do so (#​29578)
• Fix recursive type materialization (#​29532)
• Infer return intersections from correlated call specializations (#​28303)
• Preserve Self when checking universal protocols (#​29207)
• Fix stack overflows involving recursive descriptor setter types (#​29148)
• Preserve the namespace-package fallback in module discovery when the namespace-package fallback is obscured by a partial stub package (#​29559)
• Report all missing @override decorators together (#​29557)
• Fix false-positive invalid-argument-type diagnostics when inferring constrained type variables from callbacks that return an invariant generic with a gradual type argument (#​29577)

Performance improvements

• Compare protocol receiver restrictions before binding (#​29443)

LSP server

• Avoid cancelling requests for unrelated file changes (#​29604)

Core type checking

• Generics solving: check for unsatisfiable bodies before existentially quantifying (#​29504)
• Liskov diagnostics: Check inherited attribute conflicts (#​28559)
• Return type inference: eneralize nested types in inferred return types (#​29488)

Contributors

• @​charliermarsh
• @​sharkdp
• @​dhruvmanila
• @​carljm
• @​MichaReiser
• @​dcreager

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.61%. Comparing base (1f1dda0) to head (45658a5).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2217   +/-   ##
=======================================
  Coverage   98.61%   98.61%           
=======================================
  Files           9        9           
  Lines        1810     1810           
  Branches      207      207           
=======================================
  Hits         1785     1785           
  Misses         17       17           
  Partials        8        8           

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