Jon Fairbairn wrote:
> There’ll be a replacement for mkTycon (mkTycon3), so you can
> still do manual instances…

Right, it should be easy to fix manual Typeable instances.
It's just that if no action is taken, they will eventually break.
So it's good to make sure that there is public awareness,
and for the community to have awareness about the scope
of the changes that need to be made.

Also, we should clarify that AFAIK everyone agrees that this
is a welcome improvement to Typeable. We are just trying
to smooth the upgrade process so that it does not cause
unexpected inconvenience to users of the various libraries
on Hackage.

Regards,
Yitz

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