I've had a similar question, which I think boiled down to a
compilation issue. Consider packages A and B that can be defined
independently. But, just as Neil pointed out, perhaps A and B could
also interact beyond their basic definition.
My naive idea is that A would compile the simple independent way if B
wasn't around and vice versa. But if A and B were both present at
compile time, then their interaction would also be compiled. The open
question is then where does that interaction live?
I would guess this problem has been solved in other systems. Anything
come to mind?
On 4/26/07, Neil Mitchell
Hi
I currently maintain two libraries, TagSoup which defines the Tag data type, and BinaryDefer, which defines the BinaryDefer class. If I wanted to include an instance for BinaryDefer Tag, where would I put it?
Putting it in either library introduces an artificial dependency on the other. Putting it in a separate libary makes the library about 4 lines long and is just annoying. Putting it in the individual application(s) is exactly what libraries were designed to avoid.
Is there a solution?
Thanks
Neil _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe