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How-to Guide: Disko

How to use Disko without NixOS

TODO: Still to be documented

Upgrading From Older disko versions

TODO: Include documentation here.

For now, see the upgrade guide

Installing NixOS module

You can use the NixOS module in one of the following ways:

Flakes (Current recommendation)

If you use nix flakes support:

{
  inputs.disko.url = "github:nix-community/disko/latest";
  inputs.disko.inputs.nixpkgs.follows = "nixpkgs";

  outputs = { self, nixpkgs, disko }: {
    # change `yourhostname` to your actual hostname
    nixosConfigurations.yourhostname = nixpkgs.lib.nixosSystem {
      # change to your system:
      system = "x86_64-linux";
      modules = [
        ./configuration.nix
        disko.nixosModules.disko
      ];
    };
  };
}
niv

First add it to niv:

niv add nix-community/disko

Then add the following to your configuration.nix in the imports list:

{
  imports = [ "${(import ./nix/sources.nix).disko}/module.nix" ];
}
npins

First add it to npins:

npins add github nix-community disko

Then add the following to your configuration.nix in the imports list:

let
  sources = import ./npins;
  disko = import sources.disko {};
in
{
  imports = [ "${disko}/module.nix" ];}
nix-channel

As root run:

nix-channel --add https://github.com/nix-community/disko/archive/master.tar.gz disko
nix-channel --update

Then add the following to your configuration.nix in the imports list:

{
  imports = [ <disko/module.nix> ];
}
fetchTarball

Add the following to your configuration.nix:

{
  imports = [ "${builtins.fetchTarball "https://github.com/nix-community/disko/archive/master.tar.gz"}/module.nix" ];
}

or with pinning:

{
  imports = let
    # replace this with an actual commit id or tag
    commit = "f2783a8ef91624b375a3cf665c3af4ac60b7c278";
  in [
    "${builtins.fetchTarball {
      url = "https://github.com/nix-community/disko/archive/${commit}.tar.gz";
      # replace this with an actual hash
      sha256 = "0000000000000000000000000000000000000000000000000000";
    }}/module.nix"
  ];
}

Using the NixOS module

{
  # checkout the example folder for how to configure different disko layouts
  disko.devices = {
    disk = {
      vdb = {
        device = "/dev/disk/by-id/some-disk-id";
        type = "disk";
        content = {
          type = "gpt";
          partitions = {
            ESP = {
              type = "EF00";
              size = "100M";
              content = {
                type = "filesystem";
                format = "vfat";
                mountpoint = "/boot";
                mountOptions = [ "umask=0077" ];
              };
            };
            root = {
              size = "100%";
              content = {
                type = "filesystem";
                format = "ext4";
                mountpoint = "/";
              };
            };
          };
        };
      };
    };
  };
}

this will configure fileSystems and other required NixOS options to boot the specified configuration.

If you are on an installer, you probably want to disable enableConfig.

disko will create the scripts disko-create and disko-mount which can be used to create/mount the configured disk layout.