alt Hacker NewsGlad to see Talos Linux there!
Another interesting, though less radical take on an immutable container OS is IncusOS. Made by the same people behind LXC: https://github.com/lxc/incus-os
I wish the article's NixOS section had mentioned impermanence features which can be used to make NixOS actually immutable: https://nixos.wiki/wiki/Impermanence
I work at Sidero, but I'm glad that wasn't obvious from the article because I'm trying to be fair.
I heard about Impermanence right after I gave the talk so I'm looking into it.