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Profiles

Hardware profiles and disk layouts in the profiles/ directory.

Disk Profiles (Disko)

These profiles define disk partitioning schemes for disko.

Laptop Profiles

Profile Description
disk-laptop-1.nix Standard laptop layout with LUKS encryption
disk-laptop-2.nix Alternative laptop layout

Workstation Profiles

Profile Description
disk-workstation.nix Standard workstation layout
disk-workstation-2.nix Alternative workstation layout
disk-workstation-3.nix Third workstation variant
disk-workstation-ext4.nix Workstation with ext4 (no ZFS)

Special Profiles

Profile Description
disk-bcachefs-1.nix bcachefs filesystem layout
disk-odroid-n2.nix ODROID N2 SBC layout

Hardware Profiles

CPU and hardware-specific configurations.

Profile Description
amd.nix AMD CPU optimizations, microcode, GPU drivers
intel.nix Intel CPU settings, microcode
zfs.nix ZFS filesystem configuration
bcachefs.nix bcachefs support

AMD Profile (amd.nix)

Includes:

  • AMD microcode updates (via ucodenix)
  • AMDGPU driver configuration
  • ROCm support options
  • CPU frequency scaling

Intel Profile (intel.nix)

Includes:

  • Intel microcode updates
  • Intel GPU configuration

ZFS Profile (zfs.nix)

Includes:

  • ZFS kernel module
  • ZFS auto-scrub
  • Recommended ZFS settings

Device-Specific Profiles

Profile Description
lenovo-m715q.nix Lenovo ThinkCentre M715q
chrombox-cn60.nix ASUS Chromebox CN60
pro-art-7800x3d.nix ASUS ProArt with Ryzen 7800X3D
mobile-device.nix Laptop power management

Usage

Import profiles in hardware-configuration.nix:

{ inputs, ... }:
{
  imports = [
    inputs.disko.nixosModules.disko
    ../../profiles/disk-laptop-1.nix
    ../../profiles/amd.nix
    ../../profiles/zfs.nix
  ];

  # Set the disk device
  disko.devices.disk.main.device = "/dev/nvme0n1";

  # Required for ZFS
  networking.hostId = "abcd1234";
}

Generating hostId

Required for ZFS:

head -c4 /dev/urandom | od -A none -t x4

Disk Layout Example

Typical laptop layout (disk-laptop-1.nix):

/dev/nvme0n1
├── p1: EFI System Partition (512MB, FAT32) -> /boot
└── p2: LUKS encrypted
    └── ZFS pool
        ├── root    -> / (ephemeral)
        ├── nix     -> /nix
        ├── persist -> /persist (survives rebuilds)
        └── home    -> /home

Impermanence

Many profiles support impermanence (ephemeral root):

  • Root filesystem is reset on each boot
  • Persistent data stored in /persist
  • Configured via machine.impermanence = true

See the impermanence module at modules/nixos/machine/impermanence.nix.