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## Summary Discussion with @ibraheemdev clarified that https://github.com/astral-sh/ruff/pull/21168 was incorrect. In a case of failed inference of a dict literal as a `TypedDict`, we should store the context-less inferred type of the dict literal as the type of the dict literal expression itself; the fallback to declared type should happen at the level of the overall assignment definition. The reason the latter isn't working yet is because currently we (wrongly) consider a homogeneous dict type as assignable to a `TypedDict`, so we don't actually consider the assignment itself as failed. So the "bug" I observed (and tried to fix) will naturally be fixed by implementing TypedDict assignability rules. Rollback https://github.com/astral-sh/ruff/pull/21168 except for the tests, and modify the tests to include TODOs as needed. ## Test Plan Updated mdtests.
Markdown files within the mdtest/ subdirectory are tests of type inference and type checking;
executed by the tests/mdtest.rs integration test.
See crates/ty_test/README.md for documentation of this test format.