Thanks. However, while SFCGAL itself is LGPL, it uses parts of CGAL, which are GPLv3+, and because of this, it - and its Rust wrapper crate sfcgal (https://mthh.github.io/sfcgal-rs/sfcgal/), are all effectively covered by GPLv3+.

Therefore, I hope someone re-implements the innards under a liberal (LGPL or Apache2 or BSD or MIT) license.