David Peter 0bac023cd2 [ty] Lockfiles for mdtests with external dependencies (#22077) ... ## Summary Add lockfiles for all mdtests which make use of external dependencies. When running tests normally, we use this lockfile when creating the temporary venv using `uv sync --locked`. A new `MDTEST_UPGRADE_LOCKFILES` environment variable is used to switch to a mode in which those lockfiles can be updated or regenerated. When using the Python mdtest runner, this environment variable is automatically set (because we use this command while developing, not to simulate exactly what happens in CI). A command-line flag is provided to opt out of this. ## Test Plan ### Using the mdtest runner #### Adding a new test (no lockfile yet) * Removed `attrs.lock` to simulate this * Ran `uv run crates/ty_python_semantic/mdtest.py -e external/`. The lockfile is generated and the test succeeds. #### Upgrading/downgrading a dependency * Changed pydantic requirement from `pydantic==2.12.2` to `pydantic==2.12.5` (also tested with `2.12.0`) * Ran `uv run crates/ty_python_semantic/mdtest.py -e external/`. The lockfile is updated and the test succeeds. ### Using cargo #### Adding a new test (no lockfile yet) * Removed `attrs.lock` to simulate this * Ran `MDTEST_EXTERNAL=1 cargo test -p ty_python_semantic --test mdtest mdtest__external` "naively", which outputs: > Failed to setup in-memory virtual environment with dependencies: Lockfile not found at '/home/shark/ruff/crates/ty_python_semantic/resources/mdtest/external/attrs.lock'. Run with `MDTEST_UPGRADE_LOCKFILES=1` to generate it. * Ran `MDTEST_UPGRADE_LOCKFILES=1 MDTEST_EXTERNAL=1 cargo test -p ty_python_semantic --test mdtest mdtest__external`. The lockfile is updated and the test succeeds. #### Upgrading/downgrading a dependency * Changed pydantic requirement from `pydantic==2.12.2` to `pydantic==2.12.5` (also tested with `2.12.0`) * Ran `MDTEST_EXTERNAL=1 cargo test -p ty_python_semantic --test mdtest mdtest__external` "naively", which outputs a similar error message as above. * Ran the command suggested in the error message (`MDTEST_EXTERNAL=1 MDTEST_UPGRADE_LOCKFILES=1 cargo test -p ty_python_semantic --test mdtest mdtest__external`). The lockfile is updated and the test succeeds.		2025-12-19 14:29:52 +01:00
..
annotations	[ty] Respect deferred values in keyword arguments et al for `.pyi` files (#22029)	2025-12-17 14:02:10 -08:00
assignment	[ty] Improve diagnostics for unsupported binary operations and unsupported augmented assignments (#21947)	2025-12-12 21:53:29 +00:00
binary	[ty] highlight special type syntax in hovers as xml (#22005)	2025-12-16 14:20:35 +00:00
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] Improve rendering of default values for function args (#22010)	2025-12-16 13:39:19 -05:00
class	[ty] Improve `unsupported-base` and `invalid-super-argument` diagnostics to avoid extremely long lines when encountering verbose types (#22022)	2025-12-17 14:43:11 +00:00
comparison	[ty] Improve diagnostics for unsupported comparison operations (#21737)	2025-12-02 19:58:45 +00:00
comprehensions	[ty] fix global symbol lookup from eager scopes (#21317)	2025-11-12 10:15:51 -08:00
conditional	[ty] Uniformly use "not supported" in diagnostics (#21916)	2025-12-11 15:03:55 +00:00
dataclasses	[ty] Handle field specifier functions that accept `**kwargs` and recognize metaclass-based transformers as instances of `DataclassInstance` (#22018)	2025-12-17 14:22:16 +01:00
declaration	[ty] Format conflicting types as an enumeration (#18956)	2025-06-26 14:29:33 +02:00
diagnostics	[ty] Improve disambiguation of types in many cases (#22019)	2025-12-17 11:41:07 +00:00
directives	[ty] Minor improvements to `assert_type` diagnostics (#21811)	2025-12-05 12:33:30 +00:00
doc	ty_python_semantic: add union type context to function call type errors	2025-05-09 13:40:51 -04:00
exception	[ty] Improve rendering of default values for function args (#22010)	2025-12-16 13:39:19 -05:00
expression	[ty] Improve rendering of default values for function args (#22010)	2025-12-16 13:39:19 -05:00
external	[ty] Lockfiles for mdtests with external dependencies (#22077)	2025-12-19 14:29:52 +01:00
function	[ty] highlight special type syntax in hovers as xml (#22005)	2025-12-16 14:20:35 +00:00
generics	[ty] Don't add identical lower/upper bounds multiple times when inferring specializations (#22030)	2025-12-17 13:35:52 -05:00
ide_support	[ty] Support `type[T]` with type variables (#21650)	2025-11-28 09:20:24 +01:00
import	[ty] highlight special type syntax in hovers as xml (#22005)	2025-12-16 14:20:35 +00:00
libraries	[ty] Generic types aliases (implicit and PEP 613) (#21553)	2025-11-28 20:38:24 +01:00
literal	[ty] Type inference for genererator expressions (#21437)	2025-11-14 13:04:11 +00:00
loops	[ty] Uniformly use "not supported" in diagnostics (#21916)	2025-12-11 15:03:55 +00:00
narrow	[ty] Apply narrowing to `len` calls based on argument size (#22026)	2025-12-17 13:15:58 -05:00
regression	[ty] Use unqualified names for displays of `TypeAliasType`s and unbound `ParamSpec`s/`TypeVar`s (#21960)	2025-12-13 20:23:16 +00:00
scopes	[ty] Improve rendering of default values for function args (#22010)	2025-12-16 13:39:19 -05:00
shadowing	Rename Red Knot (#17820)	2025-05-03 19:49:15 +02:00
snapshots	[ty] Improve `unsupported-base` and `invalid-super-argument` diagnostics to avoid extremely long lines when encountering verbose types (#22022)	2025-12-17 14:43:11 +00:00
stubs	[ty] Better invalid-assignment diagnostics (#21476)	2025-11-18 14:31:04 +01:00
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	[ty] Improve literal promotion heuristics (#21439)	2025-11-14 16:13:56 -05:00
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] Improve rendering of default values for function args (#22010)	2025-12-16 13:39:19 -05:00
unary	[ty] Improve diagnostics for unsupported binary operations and unsupported augmented assignments (#21947)	2025-12-12 21:53:29 +00:00
with	[ty] Type inference for `@asynccontextmanager` (#21876)	2025-12-09 22:49:00 +01:00
.mdformat.toml	Rename Red Knot (#17820)	2025-05-03 19:49:15 +02:00
async.md	[ty] Infer typevar specializations for `Callable` types (#21551)	2025-12-16 09:16:49 -08:00
attributes.md	[ty] Improve disambiguation of types in many cases (#22019)	2025-12-17 11:41:07 +00:00
bidirectional.md	[ty] Improve diagnostics for unsupported comparison operations (#21737)	2025-12-02 19:58:45 +00:00
classes.md	[ty] Fix bug where ty would think all types had an `__mro__` attribute (#20995)	2025-10-27 11:19:12 +00:00
cycle.md	[ty] Improve rendering of default values for function args (#22010)	2025-12-16 13:39:19 -05:00
decorators.md	[ty] Infer typevar specializations for `Callable` types (#21551)	2025-12-16 09:16:49 -08:00
del.md	[ty] No union with `Unknown` for module-global symbols (#20664)	2025-10-01 16:40:30 +02:00
deprecated.md	[ty] Infer typevar specializations for `Callable` types (#21551)	2025-12-16 09:16:49 -08:00
descriptor_protocol.md	[ty] Enable even more goto-definition on inlay hints (#21950)	2025-12-12 12:57:38 -05:00
enums.md	[ty] Unwrap `enum.nonmember` values (#22025)	2025-12-18 19:59:49 -05:00
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] highlight special type syntax in hovers as xml (#22005)	2025-12-16 14:20:35 +00:00
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] Use "cannot" consistently over "can not" (#21255)	2025-11-03 10:38:20 -05:00
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	Rename Red Knot (#17820)	2025-05-03 19:49:15 +02:00
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] Infer typevar specializations for `Callable` types (#21551)	2025-12-16 09:16:49 -08:00
mdtest_config.md	Rename Red Knot (#17820)	2025-05-03 19:49:15 +02:00
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] Improve `unsupported-base` and `invalid-super-argument` diagnostics to avoid extremely long lines when encountering verbose types (#22022)	2025-12-17 14:43:11 +00:00
named_tuple.md	[ty] Support implicit type of `cls` in signatures (#21771)	2025-12-10 16:56:20 -05:00
overloads.md	[ty] Improve check enforcing that an overloaded function must have an implementation (#21978)	2025-12-15 08:56:35 +00:00
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] highlight special type syntax in hovers as xml (#22005)	2025-12-16 14:20:35 +00:00
pep695_type_aliases.md	[ty] Use unqualified names for displays of `TypeAliasType`s and unbound `ParamSpec`s/`TypeVar`s (#21960)	2025-12-13 20:23:16 +00:00
properties.md	[ty] Enable even more goto-definition on inlay hints (#21950)	2025-12-12 12:57:38 -05:00
protocols.md	Fix stack overflow with recursive generic protocols (depth limit) (#21858)	2025-12-09 09:05:18 -08:00
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	Rename Red Knot (#17820)	2025-05-03 19:49:15 +02:00
sys_version_info.md	[ty] support PEP 613 type aliases (#21394)	2025-11-20 17:59:35 -08:00
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] Uniformly use "not supported" in diagnostics (#21916)	2025-12-11 15:03:55 +00:00
typed_dict.md	[ty] Implement disjointness for TypedDicts (#22044)	2025-12-18 13:20:22 -08:00
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] Add subdiagnostic hint if a variable with type `Never` is used in a type expression (#21660)	2025-11-27 12:48:18 +00:00