[ty] Unions/intersections of gradual types should be assignable to Never#24056
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ibraheemdev merged 2 commits intomainfrom Mar 19, 2026
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[ty] Unions/intersections of gradual types should be assignable to Never#24056ibraheemdev merged 2 commits intomainfrom
Never#24056ibraheemdev merged 2 commits intomainfrom
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ibraheemdev
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sharkdp
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Typing conformance resultsNo changes detected ✅Current numbersThe percentage of diagnostics emitted that were expected errors held steady at 85.29%. The percentage of expected errors that received a diagnostic held steady at 78.13%. The number of fully passing files held steady at 64/132. |
sharkdp
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Thank you. It might be worth running the property tests on this branch.
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Mar 19, 2026
| from ty_extensions import static_assert, is_assignable_to, Unknown, Intersection | ||
| from typing_extensions import Never, Any | ||
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| static_assert(is_assignable_to(Any, Never)) |
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We have the same test in type_compendium/any.md, but it's obviously fine to repeat it here.
Memory usage reportMemory usage unchanged ✅ |
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crates/ty_python_semantic/resources/mdtest/type_properties/is_assignable_to.md
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Mar 25, 2026
* main: [`flake8-bandit`] Check tuple arguments for partial paths in `S607` (#24080) [ty] Update Salsa (#24081) Update Rust toolchain to 1.94 and MSRV to 1.92 (#24076) [ty] Move ruffen-docs formatting config to a `ruff.toml` config file (#24074) [ty] `reveal_type` diagnostics in unreachable code (#24070) [ty] Improve keyword argument narrowing for nested dictionaries (#24010) [ty] Preserve blank lines between comments and imports in add-import action (#24066) [ty] Add diagnostic hint for invalid assignments involving invariant generics (#24032) Clarify `extend-ignore` and `extend-select` settings documentation (#24064) [ty] Batch changes to watched paths (#24045) replace deprecated `std::f64::EPSILON` with `f64::EPSILON` (#24067) [ty] Fix untracked reads in Salsa queries that can lead to backdating panics (#24051) [ty] Unions/intersections of gradual types should be assignable to `Never` (#24056) Fix incorrect path for ty_python_semantic in fuzzer (#24052) Bump 0.15.7 (#24049) [ty] ecosystem-analyzer: Fail on newly panicking projects (#24043) Don't show noqa hover for non-Python documents (#24040)
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This showed up in #23761 with
Divergent | Any.