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nixos

My NixOS configuration

Installation instructions

  1. Boot the minimal NixOS ISO image
  2. Create a GPT partition table with the following partitions:
    • /dev/EFI_PARTITION: EFI system partition (type: EFI System, size: 1G)
    • /dev/LUKS_PARTITION: Encrypted root partition (type: Linux filesystem)
  3. Create and open the LUKS container: 
    cryptsetup -yv luksFormat /dev/LUKS_PARTITION
cryptsetup open /dev/LUKS_PARTITION root
  4. Create and mount btrfs subvolumes: 
    mkfs.btrfs -f /dev/mapper/root

mount -m -o noatime,compress=zstd /dev/mapper/root /mnt
btrfs subvolume create /mnt/@data
btrfs subvolume create /mnt/@data/.snapshots
btrfs subvolume create /mnt/@cache
btrfs subvolume create /mnt/@cache/.snapshots
btrfs subvolume create /mnt/@nix
btrfs subvolume create /mnt/@swap
umount /mnt

mount -m -o size=100%,mode=755 -t tmpfs tmpfs /mnt
mount -m -o noatime,compress=zstd,subvol=@data /dev/mapper/root /mnt/persistent/data
mount -m -o noatime,compress=zstd,subvol=@cache /dev/mapper/root /mnt/persistent/cache
mount -m -o noatime,compress=zstd,subvol=@nix /dev/mapper/root /mnt/nix
mount -m -o noatime,compress=zstd,subvol=@swap /dev/mapper/root /mnt/swap
  5. Create and activate swapfile: 
    btrfs filesystem mkswapfile -s 16G /mnt/swap/swapfile
btrfs inspect-internal map-swapfile -r /mnt/swap/swapfile  # resume_offset
swapon /mnt/swap/swapfile
  6. Format and mount EFI system partition: 
    mkfs.vfat /dev/EFI_PARTITION
mount -m -o umask=0077 /dev/EFI_PARTITION /mnt/boot
  7. Install git: 
    nix-env -iA nixos.git
  8. Clone this repository: 
    mkdir -p /mnt/persistent/data/home/felix/
cd /mnt/persistent/data/home/felix/
git clone https://github.com/Defelo/nixos.git
cd nixos
  9. Create a new or modify an existing host (don't forget to add new files to git).
  10. Install the system and reboot: 
    nixos-install --flake .#HOSTNAME --no-channel-copy --no-root-password
reboot