The reverse dependency count can be found here: http://packdeps.haskellers.com/reverse The contravariant library has 73 reverse dependencies. Just as a reference point, bifunctors currently has 112 dependencies, and Data.Bifunctor was moved into base-4.9. Whether or not you believe that 73 reverse deps is sufficient is up to you, but those are the most relevant numbers I can provide. -Andrew Martin On Tue, Dec 13, 2016 at 09:34:13PM +0100, Andreas Abel wrote:
-1. I think to move something into base there should be some hard evidence for its popularity. Such could be provided by a reverse dependency search on hackage.
--Andreas
On 11.12.2016 17:14, Andrew Martin wrote:
The typeclass Contravariant (from the contravariant package) is both useful and fundamental. I would like to see this moved into base. One additional motivating factor is that it would become possible for a DeriveContravariant extension to be written in a future GHC release. I'd love to hear other people's thoughts, even if it's as simple as a yea or nay. Thanks.
-Andrew Martin _______________________________________________ Libraries mailing list Libraries@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries
-- Andreas Abel <>< Du bist der geliebte Mensch.
Department of Computer Science and Engineering Chalmers and Gothenburg University, Sweden
andreas.abel@gu.se http://www2.tcs.ifi.lmu.de/~abel/