Closed
Description
compatible-metaclasses validates superclasses according to a simple substitution model,
thereby greatly simplifying the definition of class mixins.
Project's home: https://www.hexstreamsoft.com/libraries/compatible-metaclasses/
GitHub: https://github.com/Hexstream/compatible-metaclasses
Quicklisp should pull from the tarball: https://tarballs.hexstreamsoft.com/libraries/latest/compatible-metaclasses_latest.tar.gz