David Peter 8dad58de37 [ty] Support dataclass-transform field_specifiers (#20888) ... ## Summary Add support for the `field_specifiers` parameter on `dataclass_transform` decorator calls. closes https://github.com/astral-sh/ty/issues/1068 ## Conformance test results All true positives ✔️ ## Ecosystem analysis * `trio`: this is the kind of change that I would expect from this PR. The code makes use of a dataclass `Outcome` with a `_unwrapped: bool = attr.ib(default=False, eq=False, init=False)` field that is excluded from the `__init__` signature, so we now see a bunch of constructor-call-related errors going away. * `home-assistant/core`: They have a `domain: str = attr.ib(init=False, repr=False)` field and then use ```py @domain.default def _domain_default(self) -> str: # … ``` This accesses the `default` attribute on `dataclasses.Field[…]` with a type of `default: _T | Literal[_MISSING_TYPE.MISSING]`, so we get those "Object of type `_MISSING_TYPE` is not callable" errors. I don't really understand how that is supposed to work. Even if `_MISSING_TYPE` would be absent from that union, what does this try to call? pyright also issues an error and it doesn't seem to work at runtime? So this looks like a true positive? * `attrs`: Similar here. There are some new diagnostics on code that tries to access `.validator` on a field. This *does* work at runtime, but I'm not sure how that is supposed to type-check (without a [custom plugin](2c6c395935/mypy/plugins/attrs.py (L575-L602))). pyright errors on this as well. * A handful of new false positives because we don't support `alias` yet ## Test Plan Updated tests.		2025-10-16 20:49:11 +02:00
..
annotations	[ty] Do not bind self to non-positional parameters (#20850)	2025-10-13 20:44:27 +02:00
assignment	[ty] bidirectional type inference using function return type annotations (#20528)	2025-10-11 00:38:35 +00:00
binary	[ty] Sync vendored typeshed stubs (#20876)	2025-10-15 11:13:32 +02:00
boolean	Revert "[ty] Better control flow for boolean expressions that are inside if (#18010)" (#18150)	2025-05-17 08:27:32 -04:00
boundness_declaredness	[ty] Reformulation of public symbol inference test suite (#20667)	2025-10-01 14:26:17 +02:00
call	[ty] Heterogeneous unpacking support for unions (#20377)	2025-10-15 19:30:03 +01:00
class	[ty] Fix further issues in super() inference logic (#20843)	2025-10-14 12:48:47 +00:00
comparison	[ty] detect cycles in binary comparison inference (#20446)	2025-09-17 09:45:25 +02:00
comprehensions	[ty] Async for loops and async iterables (#19634)	2025-07-30 17:40:24 +02:00
conditional	[ty] Support as-patterns in reachability analysis (#19728)	2025-08-04 20:13:50 +02:00
dataclasses	[ty] Support dataclass-transform field_specifiers (#20888)	2025-10-16 20:49:11 +02:00
declaration	[ty] Format conflicting types as an enumeration (#18956)	2025-06-26 14:29:33 +02:00
diagnostics	[ty] defer inference of legacy TypeVar bound/constraints/defaults (#20598)	2025-10-09 21:08:37 +00:00
directives	[ty] Use annotated parameters as type context (#20635)	2025-10-03 17:14:51 -04:00
doc	ty_python_semantic: add union type context to function call type errors	2025-05-09 13:40:51 -04:00
exception	[ty] Filter out revealed-type and undefined-reveal diagnostics from mdtest snapshots (#20820)	2025-10-12 18:39:32 +00:00
expression	[ty] Rename "possibly unbound" diagnostics to "possibly missing" (#20492)	2025-09-23 14:26:55 +00:00
function	[ty] Improve disambiguation of types via fully qualified names (#20141)	2025-08-29 08:44:18 +00:00
generics	[ty] Diagnostic for generic classes that reference typevars in enclosing scope (#20822)	2025-10-13 19:30:49 -04:00
ide_support	[ty] Filter out revealed-type and undefined-reveal diagnostics from mdtest snapshots (#20820)	2025-10-12 18:39:32 +00:00
import	[ty] Check typeshed VERSIONS for parent modules when reporting failed stdlib imports (#20908)	2025-10-16 13:25:08 +00:00
literal	[ty] Treat functions, methods, and dynamic types as function-like Callables (#20842)	2025-10-13 15:21:55 +02:00
loops	[ty] Heterogeneous unpacking support for unions (#20377)	2025-10-15 19:30:03 +01:00
narrow	[ty] Fix match pattern value narrowing to use equality semantics (#20882)	2025-10-16 07:50:32 +00:00
regression
scopes	Update default and latest Python versions for 3.14 (#20725)	2025-10-07 12:23:11 -04:00
shadowing
snapshots	Standardize syntax error construction (#20903)	2025-10-16 11:56:32 -04:00
stubs	Update default and latest Python versions for 3.14 (#20725)	2025-10-07 12:23:11 -04:00
subscript	[ty] Rename "possibly unbound" diagnostics to "possibly missing" (#20492)	2025-09-23 14:26:55 +00:00
suppressions	[ty] Consistent use of American english (in rules) (#19488)	2025-07-22 16:10:38 +02:00
type_compendium	[ty] Heterogeneous unpacking support for unions (#20377)	2025-10-15 19:30:03 +01:00
type_of	[ty] Improve the Display for generic type[] types (#19667)	2025-07-31 19:45:01 +01:00
type_properties	[ty] Treat Callable dunder members as bound method descriptors (#20860)	2025-10-14 14:27:52 +02:00
type_qualifiers	[ty] Allow annotation expressions to be ast::Attribute nodes (#20413)	2025-09-15 12:06:48 +01:00
unary	Update class literal display to use <class 'Foo'> style (#17889)	2025-05-06 20:11:25 -04:00
with	[ty] Use typing.Self for the first parameter of instance methods (#20517)	2025-09-29 21:08:08 +02:00
.mdformat.toml
async.md	[ty] Support async/await, async with and yield from (#19595)	2025-07-30 11:51:21 +02:00
attributes.md	[ty] Add version hint for failed stdlib attribute accesses (#20909)	2025-10-16 14:07:33 +00:00
bidirectional.md	[ty] bidirectional type inference using function return type annotations (#20528)	2025-10-11 00:38:35 +00:00
classes.md	[ty] don't assume that deferred type inference means deferred name resolution (#20160)	2025-08-29 16:19:45 -07:00
cycle.md	[ty] Add cycle handling for unpacking targets (#18078)	2025-05-13 21:27:48 +00:00
decorators.md	ty_python_semantic: add union type context to function call type errors	2025-05-09 13:40:51 -04:00
del.md	[ty] No union with Unknown for module-global symbols (#20664)	2025-10-01 16:40:30 +02:00
deprecated.md	[ty] Consistent use of American english (in rules) (#19488)	2025-07-22 16:10:38 +02:00
descriptor_protocol.md	[ty] Use typing.Self for the first parameter of instance methods (#20517)	2025-09-29 21:08:08 +02:00
enums.md	[ty] Enums: allow multiple aliases to point to the same member (#20669)	2025-10-01 15:51:53 +02:00
exhaustiveness_checking.md	[ty] Fix subtyping for dynamic specializations (#20592)	2025-09-26 15:05:03 +02:00
final.md
implicit_type_aliases.md	[ty] no more diverging query cycles in type expressions (#20359)	2025-09-16 16:44:11 -07:00
instance_layout_conflict.md	[ty] initial support for slots=True in dataclasses (#20278)	2025-09-07 18:25:35 +01:00
intersection_types.md	[ty] Expansion of enums into unions of literals (#19382)	2025-07-21 19:37:55 +02:00
invalid_syntax.md
known_constants.md
mdtest_config.md
mdtest_custom_typeshed.md	[ty] Remove Type::Tuple (#19669)	2025-08-11 22:03:32 +01:00
metaclass.md	Update class literal display to use <class 'Foo'> style (#17889)	2025-05-06 20:11:25 -04:00
mro.md	[ty] Filter out revealed-type and undefined-reveal diagnostics from mdtest snapshots (#20820)	2025-10-12 18:39:32 +00:00
named_tuple.md	[ty] Use typing.Self for the first parameter of instance methods (#20517)	2025-09-29 21:08:08 +02:00
overloads.md	[ty] Improve diagnostics for bad @overload definitions (#20745)	2025-10-07 21:52:57 +00:00
pep695_type_aliases.md	[ty] cache Type::is_redundant_with (#20477)	2025-10-16 13:46:56 +02:00
properties.md	[ty] "foo".startswith is not an instance of types.MethodWrapperType (#20317)	2025-09-10 11:14:26 +00:00
protocols.md	[ty] Filter out revealed-type and undefined-reveal diagnostics from mdtest snapshots (#20820)	2025-10-12 18:39:32 +00:00
public_types.md	[ty] Disambiguate classes that live in different modules but have the same fully qualified names (#20756)	2025-10-08 18:27:40 +01:00
statically_known_branches.md	[ty] Rename "possibly unbound" diagnostics to "possibly missing" (#20492)	2025-09-23 14:26:55 +00:00
sys_platform.md
sys_version_info.md
t_strings.md	[ty] Add support for PEP 750 t-strings (#20085)	2025-08-25 18:49:49 +00:00
terminal_statements.md	[ty] improve lazy scope place lookup (#19321)	2025-07-25 07:11:11 +00:00
ty_extensions.md	[ty] Simplify and fix CallableTypeOf[..] implementation (#20797)	2025-10-10 12:04:37 +02:00
typed_dict.md	[ty] bidirectional type inference using function return type annotations (#20528)	2025-10-11 00:38:35 +00:00
union_types.md	[ty] Introduce TypeRelation::Redundancy (#20602)	2025-10-03 18:35:30 +01:00
unpacking.md	[ty] Infer more precise types for collection literals (#20360)	2025-09-17 18:51:50 -04:00
unreachable.md	[ty] Rename "possibly unbound" diagnostics to "possibly missing" (#20492)	2025-09-23 14:26:55 +00:00