Hi,
MetaclassTalk is a reflective extension of Smalltalk that provides programmers with a a meta-object protocol (MOP) to control objects structure (memory allocation and access to instance variables) and behavior (message sends and receptions and method lookup and evaluation). It aims easing experiments of new concepts, programming pradigms and langage extensions.
I (at last) started porting it on a recent version of Squeak (3.9). The port is still unfinished. However, you can use explicit metaclasses. Note that Monticello support for explicit metaclasses is also provides. Explicit metaclasses can be safely stored and retreived from Monticello repositories.
http://csl.ensm-douai.fr/MetaclassTalk http://www.squeaksource.com/MetaclassTalk.html
Any chance you could port to 3.8 instead or also, being the latest stable version?