### What's the problem this feature will solve? It is specified here (and in the jsonschema file): https://setuptools.pypa.io/en/latest/userguide/pyproject_config.html#dynamic-metadata that dynamic metadatas `description`, `classifiers`, `entry-points`, `dependencies`, `optional-dependencies` can *only* be read from a static file. ### Describe the solution you'd like I would like at least `description` to be read from an attribute just like ` version`, it doesn't make sense to restrict it to a file. ### Alternative Solutions _No response_ ### Additional context _No response_ ### Code of Conduct - [x] I agree to follow the PSF Code of Conduct