Carl Meyer 0138cd238a [ty] avoid fixpoint unioning of types containing current-cycle Divergent (#21910) ... Partially addresses https://github.com/astral-sh/ty/issues/1732 ## Summary Don't union the previous type in fixpoint iteration if the previous type contains a `Divergent` from the current cycle and the latest type does not. The theory here, as outlined by @mtshiba at https://github.com/astral-sh/ty/issues/1732#issuecomment-3609937420, is that oscillation can't occur by removing and then reintroducing a `Divergent` type repeatedly, since `Divergent` types are only introduced at the start of fixpoint iteration. ## Test Plan Removes a `Divergent` type from the added mdtest, doesn't otherwise regress any tests.		2025-12-11 19:52:34 -08:00
..
annotations	[ty] support `NewType`s of `float` and `complex` (#21886)	2025-12-12 00:43:09 +00:00
assignment	[ty] Uniformly use "not supported" in diagnostics (#21916)	2025-12-11 15:03:55 +00:00
binary	[ty] Uniformly use "not supported" in diagnostics (#21916)	2025-12-11 15:03:55 +00:00
boolean	…
boundness_declaredness	…
call	[ty] Support implicit type of `cls` in signatures (#21771)	2025-12-10 16:56:20 -05:00
class	[ty] Infer type of implicit `cls` parameter in method bodies (#21685)	2025-12-10 10:31:28 +01:00
comparison	[ty] Improve diagnostics for unsupported comparison operations (#21737)	2025-12-02 19:58:45 +00:00
comprehensions	…
conditional	[ty] Uniformly use "not supported" in diagnostics (#21916)	2025-12-11 15:03:55 +00:00
dataclasses	[ty] Respect `kw_only` from parent class (#21820)	2025-12-10 10:12:18 +01:00
declaration	…
diagnostics	[ty] Add subdiagnostic hint if the user wrote `X = Any` rather than `X: Any` (#21777)	2025-12-03 20:42:21 +00:00
directives	[ty] Minor improvements to `assert_type` diagnostics (#21811)	2025-12-05 12:33:30 +00:00
doc	…
exception	…
expression	[ty] Uniformly use "not supported" in diagnostics (#21916)	2025-12-11 15:03:55 +00:00
external	[ty] Type inference for `@asynccontextmanager` (#21876)	2025-12-09 22:49:00 +01:00
function	[ty] Improve the display of various special-form types (#21775)	2025-12-03 21:19:59 +00:00
generics	[ty] improve bad specialization results & error messages (#21840)	2025-12-11 19:21:34 -08:00
ide_support	[ty] Support `type[T]` with type variables (#21650)	2025-11-28 09:20:24 +01:00
import	[ty] cleanup test path (#21781)	2025-12-03 21:54:50 +00:00
libraries	[ty] Generic types aliases (implicit and PEP 613) (#21553)	2025-11-28 20:38:24 +01:00
literal	…
loops	[ty] Uniformly use "not supported" in diagnostics (#21916)	2025-12-11 15:03:55 +00:00
narrow	[ty] Uniformly use "not supported" in diagnostics (#21916)	2025-12-11 15:03:55 +00:00
regression	[ty] Avoid diagnostic when `typing_extensions.ParamSpec` uses `default` parameter (#21839)	2025-12-08 12:34:30 +00:00
scopes	…
shadowing	…
snapshots	[ty] Uniformly use "not supported" in diagnostics (#21916)	2025-12-11 15:03:55 +00:00
stubs	…
subscript	[ty] support `type[tuple[...]]` (#21652)	2025-12-01 11:49:26 +01:00
suppressions	[ty] Add code action to ignore diagnostic on the current line (#21595)	2025-11-29 15:41:54 +01:00
type_compendium	…
type_of	[ty] Fix disjointness checks with type-of `@final` classes (#21770)	2025-12-10 15:15:10 -05:00
type_properties	[ty] Fix disjointness checks with type-of `@final` classes (#21770)	2025-12-10 15:15:10 -05:00
type_qualifiers	[ty] Avoid double-analyzing tuple in `Final` subscript (#21828)	2025-12-07 14:27:14 +00:00
unary	[ty] Uniformly use "not supported" in diagnostics (#21916)	2025-12-11 15:03:55 +00:00
with	[ty] Type inference for `@asynccontextmanager` (#21876)	2025-12-09 22:49:00 +01:00
.mdformat.toml	…
async.md	[ty] Generic types aliases (implicit and PEP 613) (#21553)	2025-11-28 20:38:24 +01:00
attributes.md	[ty] Support `type[T]` with type variables (#21650)	2025-11-28 09:20:24 +01:00
bidirectional.md	[ty] Improve diagnostics for unsupported comparison operations (#21737)	2025-12-02 19:58:45 +00:00
classes.md	…
cycle.md	[ty] avoid fixpoint unioning of types containing current-cycle Divergent (#21910)	2025-12-11 19:52:34 -08:00
decorators.md	…
del.md	…
deprecated.md	…
descriptor_protocol.md	…
enums.md	[ty] Support `type[T]` with type variables (#21650)	2025-11-28 09:20:24 +01:00
exhaustiveness_checking.md	[ty] Exhaustiveness checking for generic classes (#21726)	2025-12-01 13:52:36 +01:00
final.md	[ty] Improve `@override`, `@final` and Liskov checks in cases where there are multiple reachable definitions (#21767)	2025-12-03 12:51:36 +00:00
implicit_type_aliases.md	[ty] improve bad specialization results & error messages (#21840)	2025-12-11 19:21:34 -08:00
instance_layout_conflict.md	…
intersection_types.md	…
invalid_syntax.md	[ty] Avoid double-inference on non-tuple argument to `Annotated` (#21837)	2025-12-08 10:24:05 -05:00
known_constants.md	…
liskov.md	[ty] Carry generic context through when converting class into `Callable` (#21798)	2025-12-05 08:57:21 -05:00
literal_promotion.md	[ty] Narrow type context during literal promotion in generic class constructors (#21574)	2025-11-21 17:05:32 -05:00
mdtest_config.md	…
mdtest_custom_typeshed.md	…
metaclass.md	…
mro.md	[ty] Improve the display of various special-form types (#21775)	2025-12-03 21:19:59 +00:00
named_tuple.md	[ty] Support implicit type of `cls` in signatures (#21771)	2025-12-10 16:56:20 -05:00
overloads.md	…
override.md	[ty] Improve `@override`, `@final` and Liskov checks in cases where there are multiple reachable definitions (#21767)	2025-12-03 12:51:36 +00:00
pep613_type_aliases.md	[ty] Improve the display of various special-form types (#21775)	2025-12-03 21:19:59 +00:00
pep695_type_aliases.md	[ty] Support typevar-specialized dynamic types in generic type aliases (#21730)	2025-12-03 10:00:02 +01:00
properties.md	…
protocols.md	Fix stack overflow with recursive generic protocols (depth limit) (#21858)	2025-12-09 09:05:18 -08:00
public_types.md	…
statically_known_branches.md	…
sys_platform.md	…
sys_version_info.md	[ty] support PEP 613 type aliases (#21394)	2025-11-20 17:59:35 -08:00
t_strings.md	…
terminal_statements.md	…
ty_extensions.md	[ty] Uniformly use "not supported" in diagnostics (#21916)	2025-12-11 15:03:55 +00:00
typed_dict.md	[ty] add `SyntheticTypedDictType` and implement `normalized` and `is_equivalent_to` (#21784)	2025-12-10 20:36:36 +00:00
union_types.md	…
unpacking.md	…
unreachable.md	[ty] Add subdiagnostic hint if a variable with type `Never` is used in a type expression (#21660)	2025-11-27 12:48:18 +00:00