Dan Burton
http://hackage.haskell.org/trac/ghc/wiki/DefaultSuperclassInstances
What is the status on this?
well, judging from SPJ's last comment I found on that topic, the proposal seems to have been stuck, and it seems we have to make our desire for that feature more apparent: ,---- | From: http://permalink.gmane.org/gmane.comp.lang.haskell.libraries/16212 | | > With regard to [1], default superclass instances, is there already a plan to | > implement them? And if so, when is it expected to be finished? | > | > [1] http://hackage.haskell.org/trac/ghc/wiki/DefaultSuperclassInstances | | It definitely won't be in 7.4 I'm afraid. | | One thing that would be motivating would be a list of people who | actively want default superclass instances and why you want them. My | own priorities for implementing stuff are much influenced by what | GHC's users seem to value. I've added an "Applications" section to | [1]; do add yourself and sketch how you'd use the new feature. `----