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[ty] Recover from Salsa cycles in `code_generator_of_dynamic_class` Checking a self-referential dynamically-created class (e.g. the fuzzer-found `type("T", NamedTuple("T", [("", "T")]), {})`) panicked with `dependency graph cycle when querying code_generator_of_dynamic_class(...)`: the query re-enters itself via `iter_mro` -> `deferred_explicit_bases` -> ... . Its static-class sibling `code_generator_of_static_class` already recovers from such cycles with `cycle_initial=|_, _, _| None`; apply the same recovery to the dynamic-class query so a cycle resolves to "no code generator" instead of panicking. Fixes astral-sh/ty#3720. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

JamBalaya56562:ty-3720-dynamic-class-codegen-cycle

10 minutes ago

[ty] Reason about runtime object identity for `is`/`is not` with NewTypes A `NewType` is transparent at runtime (`NewType("N", Base)(v)` returns `v` unchanged), so two variables whose declared types are type-level disjoint can still point to the same runtime object. ty previously used type-level disjointness for `is`/`is not`, so e.g. `NewType("A", Foo)` vs `NewType("B", Foo)` made `x is y` infer `Literal[False]` (marking the branch unreachable) and narrowed both operands to `Never`. Add `Type::is_runtime_object_disjoint_from`, which peels `NewType` transparency before checking disjointness, and use it both in `is`/`is not` comparison inference (so the result is `bool`, not a static `False`/`True`, when the operands could be the same object) and in `is` narrowing (so such operands are not narrowed to `Never`). The type-level intersection simplification (`A & B` -> `Never`) is unchanged; genuinely disjoint runtime value sets such as distinct `@final` bases still narrow to `Never`. Fixes astral-sh/ty#3552. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

JamBalaya56562:ty-3552-newtype-is-narrowing

10 minutes ago

Render reST hyperlinks in docstring Markdown

lerebear/push-mzutpnrrzrww

29 minutes ago

Model general Markdown rendering state explicitly

lerebear/push-swtoupyvyrmk

30 minutes ago

by

MichaReiser

46 minutes ago

by

MichaReiser

47 minutes ago

by

MichaReiser

53 minutes ago

[ty] Add small index set with inline storage

micha/small-index-set

1 hour ago

Latest Branches

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[ty] Recover from Salsa cycles in code_generator_of_dynamic_class#26167

6 hours ago

e1a6fbf

JamBalaya56562:ty-3720-dynamic-class-codegen-cycle

0%

[ty] Reason about runtime object identity for is/is-not with NewTypes#26168

5 hours ago

19c4465

JamBalaya56562:ty-3552-newtype-is-narrowing

0%

[ty] Render reST hyperlinks in docstring Markdown.#25907

11 days ago

f25e9bb

lerebear/push-mzutpnrrzrww

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