This also means `pydantic` v2.12 can not be installed. Looking at the CI test on `pydantic` itself for PyPy (https://github.com/pydantic/pydantic/actions/runs/18323618951/job/52182565347), the test was successful, but the logs have no `Downloading pydantic-core` entry like the other tests in the same run do. The `pydantic-core` version used by `uv` in the test did not come from pypi.