There is Mezzano[0], but I am not sure if it has a similar kind of hackability. I believe environments like that are pretty amazing. It is something that is not

There is Mezzano[0], but I am not sure if it has a similar kind of hackability. I believe environments like that are pretty amazing. It is something that is not unique to just lisps either, you see similar features in Smalltalk environments like Pharo[1]. [0]: https://github.com/froggey/Mezzano https://github.com/froggey/Mezzano [1]: https://pharo.org/ https://pharo.org/