Dear devs, I have a program [1] which depends on the ability to specify some instances to be both overlappable and incoherent.
GHC so far, allows only one of the OVERLAPPABLE or INCOHERENT pragmas to be specified per instance. One can still have an overlappable and incoherent instance by using -XIncoherenInstances, but this extension is deprecated. Is there any chance that a patch is accepted to allow multiple instance pragmas? And if not, what would the reason for this constraint? Thanks, Facundo [1] https://gist.github.com/facundominguez/2c0292bf6a721b450c46486ff3b71f24
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