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1. Commits on Sep 28, 2026

   • [ty] Update agent guidance for rules and mdtests (#28961)

     AlexWaygood

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   • [RFC] Trust analyzed project files by default (#28892)

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     zsol

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   • [ty] Avoid retaining docstring literal types (#28944)

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     charliermarsh

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   • [ty] Cache and prune constraint set paths when searching for solutions (#28864)

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     dcreager

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   • [ty] Explain outdated uv versions in metadata errors (#28959)

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     sharkdp

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   • [ty] Enable None-union truthiness checks in Python scripts and tools (#28911)

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     sharkdp

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   • [ty] Preserve intersection receivers in implicit dunder calls (#28833)

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     sharkdp

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   • docs(faq): add ty as type checker example (#28906)

     spaceone

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2. Commits on Sep 27, 2026

   • [ty] Cache the flattened module list (#28932)

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     charliermarsh

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   • [ty] Refresh Python settings when virtual environments change (#28650)

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     MichaReiser

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   • [ty] Skip caching trivially assignable types (#28936)

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     charliermarsh

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   • Reduce memory used by diagnostics (#28951)

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     charliermarsh

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   • [ty] Index nonlocal bindings when sweeping snapshots (#28935)

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     charliermarsh

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   • [ty] Skip storing default definition states (#28934)

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     charliermarsh

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   • [ty] Validate union operands involving None (#28931)

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     charliermarsh

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   • [ty] Avoid repeated work in nested match patterns (#28926)

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     charliermarsh

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3. Commits on Sep 26, 2026

   • [ty] Add a helper for configuring extra search paths to the builder for module resolution tests (#28923)

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     lerebear

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   • [ty] Normalize recursive dataclass transform metadata (#28920)

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     charliermarsh

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   • [ty] Share module snapshot formatting across resolver tests (#28921)

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     lerebear

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   • [ty] Normalize recursive TypedDicts during cycle recovery (#28918)

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     charliermarsh

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   • [ty] Fix stack overflow when inferring dynamic class metaclasses (#28917)

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     charliermarsh

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   • [ty] Detect recursive alias cycles through intersections (#28916)

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     charliermarsh

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   • [ty] Refactor suspicious condition classification and annotation lookup (#28915)

     AlexWaygood

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   • [ty] Rename redundant_conditions module to suspicious_conditions (#28910)

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     sharkdp

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4. Commits on Sep 25, 2026

   • [ty] Rename module search traversal operation to `advance` (#28912)

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     lerebear

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   • [ty] Add opt-in `truthiness-test-of-none-union` rule (#28889)

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     sharkdp

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   • [ty] Handle declared constraints during solution extraction (#28753)

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     dcreager

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   • [ty] Remove `max_diagnostics` checks for benchmarks (#28897)

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     sharkdp

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   • [ty] Compare observable notebook state for equality (#28874)

     MichaReiser

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   • [ty] Clarify ecosystem summary count placement (#28894)

     AlexWaygood

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   • [ty] 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)

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     AlexWaygood

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   • Cleanup ecosystem summary report template (#28891)

     AlexWaygood

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   • [ty] Specialize Self bounds through generic type aliases (#28890)

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     sharkdp

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   • Upgrade Rustix to 1.1.5 (#28756)

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     WhyNotHugo

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     MichaReiser

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   • [ty] Infer nominal generic specializations from bounded type variables (#28812)

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     ibraheemdev

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