What's Changed Disclaimer This is a large one, with a lot of improvements, new features and bug fixes! TL;DR narwhals support for dataframe agnostic codebase numpy 2.0 support cvxpy 1.5 support improvements in scikit-learn intergration New Features ✨ Narwhals for dataframe-agnostic codebase by @FBruzzesi in https://github.com/koaning/scikit-lego/pull/671 This was a very large effort with the help of many to introduce narwhals: #655 by @MarcoGorelli #659 by @anopsy #661 by @MarcoGorelli #665 by @MarcoGorelli #667 by @FBruzzesi #669 by @DeaMariaLeon #670 by @MarcoGorelli numpy 2.0rc support by @FBruzzesi in https://github.com/koaning/scikit-lego/pull/651 Supports of numpy 2.0 for base library (not including cvxpy and umap) Bug fixes 🐞 cvxpy 1.5.0 support by @FBruzzesi in https://github.com/koaning/scikit-lego/pull/663 ZeroInflatedRegressor fix training indices by @FBruzzesi in https://github.com/koaning/scikit-lego/pull/666 Internals ⚒️ Improving sklearn compatibility via parametrize_with_checks by @FBruzzesi in https://github.com/koaning/scikit-lego/pull/660 Full Changelog: https://github.com/koaning/scikit-lego/compare/v0.8.2...v0.9.0