What’s New in Go 1.21 – A Comprehensive Notes

> New cmp Package for Comparing Ordered Values

https://pkg.go.dev/cmp@master

I find this part of the type constraint design particularly lame. Here one can't extend the constraint over an arbitrary type, making the cmp.Ordered pretty useless. And that seems like a severe language limitations since one can't implement a constrain of a kind:

    interface Comparable {
      compare(that Self) int // where Self typevar is bound to the callee's type
    }

    func sort[T Comparable](slice ~[]T) ~[]T