Ruby 2.4 development is finishing and yesterday, there was release of
Ruby 2.4.1-rc1  and here is the scratch build for your testing:
The stable Ruby 2.4.0 release is scheduled at
2016-12-25T00:00:00/03:00:00 according to release engineering ticket .
Since I got only positive feedback and no complains about my pre-release
macros support proposal . These macros are included in this scratch
build. I will likely backport them into stable releases later, when
there will be some updates necessary.
As always, please let me know if you encounter any issues. Thx.