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NixOS from "scratch" as Virtualbox Guest
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nixos_in_virtualbox.md

Steps

Inside the Live CD

UEFI instructions

sudo su # assume root
parted /dev/sda -- mklabel gpt
parted /dev/sda -- mkpart primary 512MiB -8GiB
parted /dev/sda -- mkpart primary linux-swap -8GiB 100%
parted /dev/sda -- mkpart ESP fat32 1MiB 512MiB
parted /dev/sda -- set 3 esp on
mkfs.ext4 -L nixos /dev/sda1
mkswap -L swap /dev/sda2
mkfs.fat -F 32 -n boot /dev/sda3
mount /dev/disk/by-label/nixos /mnt
mkdir -p /mnt/boot
mount /dev/disk/by-label/boot /mnt/boot
swapon /dev/sda2
nixos-generate-config --root /mnt

Run vim /mnt/etc/nixos/configuration.nix and set the below inside configuration.nix:

  1. Make sure boot.loader.grub.* are all commented out
  2. Include the following lines:
boot.loader.systemd-boot.enable = true;
boot.loader.efi.canTouchEfiVariables = true;
boot.loader.timeout = 2;

nix = {
   package = pkgs.nixUnstable;
   extraOptions = "experimental-features = nix-command flakes";
};

virtualisation.virtualbox.guest.enable = true;
  1. Exit configuration.nix
  2. Run nixos-install
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