Keyed archiving and class clusters

[Thomas Davie]

Hi all,

From what I understand, GNUstep's keyed archive format is meant to be 
compatible with Apple's.  However, I'm hitting an issue and I'm not certain if 
it's the fault of the archiver, or class clusters.

Basically, when an NSMutableSet gets encoded, what really gets encoded is it's 
concrete subclass, GSMutableSet... When I try to decode this in some code using 
apple's implementation, it chokes, not having a GSMutableSet class to attempt 
to init.

Is there any sane way round this, or should I get on with writing my own 
serialisation methods if I want to send objects back and forth between 
apple/GNUstep implementations?

Thanks

Tom Davie