For Edge Rails have Gems compatible list

To have a list of Gems that are not compatible and those that are maybe with a link to the current rails edge branch e.g. 4.2

To add at the bottom of the Rails Edge guide i.e.

This would be very helpful to know when Devise or Bullet works with Rails 4.2, it would help people make a decision when is the time to upgrade. It might also add momentum to Gem Developers to update the Gem, or encourage others to get involved and upgrading it.


There are 88,000 ruby gems! A compatibility list is out of the question.

The mechanism for compatibility is bundler. It should tell you that you can’t upgrade to Rails 4.2 b/c Devise requires Rails 4.1