4.0.0

4.0.0 Release

For information about all the new features and changes, please refer to the documentation.

If migrating, please refer to the migration guide.

What's Changed

• Reworked injection internals for significantly better performance and typing compliance. The bundled benchmark improved from ~9s to ~4s at 10^6 iterations versus 3.9.2.
• Collection providers now return read-only abstractions: providers.List(...) resolves to a tuple-backed Sequence, and providers.Dict(...) resolves to a mappingproxy-backed Mapping.
• Tightened context-resource and scope handling, including cleaner sync and async context entry for containers and providers, stricter scope checks, and better None handling across provider resolution paths.
• BaseContainer.context() now preserves the wrapped callable signature.
• The package now ships with its own that-depends Agent skill.
• Now type checked by both mypy and pyrefly

Pull Requests

• v4 by @xelandernt in #210
• Skills by @xelandernt in #211

Full Changelog: 3.9.2...4.0.0