On 1/6/11 3:11 PM, Chris Dornan wrote:
Speaking as such a developer, I agree with Howard: can we please strongly encourage upwards compatibility in API changes and well-documented migration paths when this is not practical.
I was somewhat surprised to see maintainers being given carte blanche to break APIs, package-maintainers and developers not always having the same interests.
Speaking only for myself, I think there is definite need for a carte blanche--- but we may only need one (or a few) instead of an endless supply of them. Namely, there is definite need for the wholesale revision being discussed elsewhere; and in order to have free reign for the big bang changes, it needs a carte. However, I agree that as a general model of maintaining core libraries, these cartes should be in short supply in order to accommodate those who require stability. Not long ago (circa GHC-6.8) there was much instability and that put a lot of folks off. While upwards compatibility is desirable when at all possible, there must be enough room for people to make breaking changes when necessary. Even folks working on kernels, distros, and enterprisey things recognize this need. The only issue to be resolved is how to make such changes in an orderly fashion. -- Live well, ~wren