12 Mar
2013
12 Mar
'13
1:18 p.m.
On Tue, Mar 12, 2013 at 11:06:22AM -0400, Ben Gamari wrote:
2) We decide it is acceptable to break users code multiple times, drop the Monoid instance and reintroduce the new instance after some delay. The length of this delay could range from no delay at all (allowing folks to quickly move to the new instance, although potentially unwittingly) to several months (hoping that most users will realize the change during this window).
If we're talking about containers, if you want a meaningful delay, you'd probably need at least one GHC+HP major release with no instance, and and then the new instance would come with the next GHC+HP major release. i.e. the delay would be at least a year. Thanks Ian