equal? as protocol to implement ?

[asmodehn]

I recently had an issue where floats where embedded into a struct, and checking with equal? on the whole struct didn't round the float (as it does on one float).
I also don't want to have a property defined in a typeclass, with a specific notion of equality that depends on the implementation...

I am thinking that equal? should be defined in a protocol, and implementable for any struct, just like generator is ?
What do you all think ?

[asmodehn]

So, I tried with a protocol: 7c15ee2 but this prevents witchcraft from compiling, not sure why.

I implemented equal to be recursive on data structures, and this satisfies my needs so far: 2278359

I ll keep an eye out for any improvements I might need to do on this...