shinies

Perhaps you mean https://openitcockpit.io/editions/ ?

Before the slices package you had to write those functions for all your types, it's much better now!

I also like using generics for API request/response code, ex: https://go.dev/play/p/OWf9eFmg1qF

With generics you don't need to return any/interface{} / type assert at runtime

Here is an example in the standard library: https://pkg.go.dev/slices

Both Linode and AWS either migrated off Xen or are in the process of it. Qubes (last I checked) wants to move to a VMM independent design.

You can build a very minimal host image based on Alpine or something similar to reduce the surface. I'm not sure how this compares to Xen these days though.

Linode migrated to KVM as well. Seems everyone is slowly moving off Xen!