Help required with exporting and using GOOP generics

[Brent Pinkney]

Hello,

I am having serious problems exporting generics from subclasses of <object> and then using them in other modules.
I have trawled the logs and tried every combination I can thing of.

I have tried creating a common base class <thing> for all my classes and defining the methods there, I have tried exporting generics, and I have even tried every combination of #:duplicates (merge-generics, first, last. etc.).

I can sometimes make some progress but eventually I grind to a halt - often with spurious error messages saying that "format" and "for-each" are not memoized.

I am also quite willing to rework my code to fit guile - I just need some help on how to proceed.

Basically I would like a class hierarchy.

    Module            Class
-------------------------------------
                        <object>
(brent thing)            <thing>          ; optional - let me know
                             id name name!             
(brent foo)             <foo>
                            ; redefines from <thing>
                            id name name!
"same file"            <bar>
                            ; uses thing.name!
(brent baz)            <baz>
                            ; redefines from <thing>
                            name name!

I would then like a common module (brent main) to import (brent thing) (brent foo) and (brent baz) and then merrily create and use these classes.


Please can someone provide me with the recipe that will solve the above and also scale to a proper large system.

(I have test code - if required)

Thanks

Brent