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Alex Waygood a57e291311
[ty] Add hint about resolved Python version when a user attempts to import a member added on a newer version (#21615) 
## Summary

Fixes https://github.com/astral-sh/ty/issues/1620. #20909 added hints if
you do something like this and your Python version is set to 3.10 or
lower:

```py
import typing

typing.LiteralString
```

And we also have hints if you try to do something like this and your
Python version is set too low:

```py
from stdlib_module import new_submodule
```

But we don't currently have any subdiagnostic hint if you do something
like _this_ and your Python version is set too low:

```py
from typing import LiteralString
```

This PR adds that hint!

## Test Plan

snapshots

---------

Co-authored-by: Aria Desires <aria.desires@gmail.com>
 		2025-11-24 15:12:01 +00:00
..
docs [ty] Check method definitions on subclasses for Liskov violations (#21436) 2025-11-23 18:08:15 +00:00
src [ty] Exit with `2` if there's any IO error (#21508) 2025-11-19 09:39:19 +01:00
tests [ty] Add hint about resolved Python version when a user attempts to import a member added on a newer version (#21615) 2025-11-24 15:12:01 +00:00
CONTRIBUTING.md Fix link typo in ty's CONTRIBUTING.md (#18923) 2025-06-24 20:23:31 +00:00
Cargo.toml [ty] Support LSP client settings (#19614) 2025-08-06 18:37:21 +05:30
README.md [ty] contribution guide (#18061) 2025-05-13 10:55:01 +02:00
build.rs [ty] Fix server version (#19284) 2025-07-14 09:06:34 +02:00

README.md

ty

ty is an extremely fast type checker. Currently, it is a work-in-progress and not ready for production use.

The Rust code for ty lives in this repository; see CONTRIBUTING.md for more information on contributing to ty.

See the ty repo for ty documentation and releases.