Check out Proxmox + https://tteck.github.io/Proxmox/ + lxc container snapshots on the NAS and set up Proxmox backup server on the Pi. I find such a setup to be "all benefit, no giving up anything", contrary to NixOS.
A new programming language based on "mutable value semantics" has been renamed from Val to Hylo. It was a frequent complaint that the former name was too similar to other existing languages like V, Vala, and Vale. Mutable value semantics is a new way to efficiently pass around data structures without having explicit references/pointers present in the language and complicating semantics. Pointers are basically relegated to a status of a possible optimization that the compiler can perform at the assembly level.
AFAIU, SM2 computes the datetime of a next review, whereas Ebisu models a probability of remembering a given flashcard. It seems it’s a more straightforward representation that’s more amenable to implementing functionalities like “show me 10 least remembered cards”.
There was a point when this was joke poking fun at emacs users. With time, it makes more and more sense. Foot pedals offload some strain from your hands to your feet which in theory sounds healthier when it comes to joints. They may even improve blood circulation to your feet. Something which is quite desirable given the sedentary nature of computer work.