NixOS. I'm not interested in any other distro except Guix, which is similar. I've used Slackware, Red Hat, Gentoo, Arch, Debian, and Ubuntu in the past. NixOS w

NixOS. I'm not interested in any other distro except Guix, which is similar. I've used Slackware, Red Hat, Gentoo, Arch, Debian, and Ubuntu in the past. NixOS won't botch your dist-upgrades; you can even Ctrl-C any time in the middle to immediately and completely abort, since upgrades are atomic. You can also choose to only download everything and only do the actual upgrade steps at reboot time.