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A highly awesome system configuration

built with nix

File structure

  1. config - Main system configuration. base-desktop.nix contains lots of useful defaults.
  2. home-manager - Holds most of the desktop configuration.
  3. modules - A couple of custom options.
  4. overlays - Contains riced and custom packages. Riced packages have the name prefix g-.
  5. hosts - Contains host specific configuration.
  6. flake.nix - Kickass flake config ;)

ZFS Cheatsheet

Create pool

zpool create -o ashift=12 -o autotrim=on -O compression=zstd -O acltype=posixacl -O xattr=sa -O atime=off -O mountpoint=legacy zroot sdx2

# with two mirrored drives
zpool create -o ashift=12 -o autotrim=on -O compression=zstd -O acltype=posixacl -O xattr=sa -O atime=off -O mountpoint=legacy zroot mirror sdx2 sdy2
  • autotrim - Should be omitted for non-SSD storage.
  • ashift - Requires research. this setting is device-specific, and many drives will lie.

Setup partitions

mkfs.vfat -n BOOT -F32 /dev/sdx1
parted /dev/sdx set 1 boot on

mkdir /mnt/{home,boot,nix}

zfs create -o encryption=on -o keyformat=passphrase zroot/locker
zfs create zroot/locker/home
zfs create zroot/locker/nix
zfs create zroot/locker/os

mount -t zfs zroot/locker/os /mnt
mount -t zfs zroot/locker/home /mnt/home
mount -t zfs zroot/locker/nix /mnt/nix
mount /dev/sdx1 /mnt/boot

NixOS config

{
  # needed for zfs. 4 random bytes (in hex)
  networking.hostId = "12345678";

  # or nicer implementation
  networking.hostId = builtins.substring 0 8 (builtins.hashString "md5" config.networking.hostName);

  # nixos documentation recommends setting these to false
  boot = {
      zfs.forceImportAll = false;
      zfs.forceImportRoot = false;
  };
}

unmount and export all zfs stuff before leaving the live installer!!!

zpool export zroot