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[Docs] More familiar flakes example #558

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[Docs] More familiar flakes example
rrueger Mar 5, 2026
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Fix typos
rrueger Mar 17, 2026
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75 changes: 43 additions & 32 deletions docs/getting-started/prepare-your-system.md
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Expand Up @@ -81,56 +81,67 @@ lanzaboote = import sources.lanzaboote { inherit pkgs; };

## Configure NixOS (with Flakes)

Add this fragment to your `flake.nix`:
**Step 1a**. Modify `flake.nix`: Add `lanzaboote` input

```nix
{
description = "A SecureBoot-enabled NixOS configurations";

inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";

inputs = {
...
lanzaboote = {
url = "github:nix-community/lanzaboote/v1.0.0";

# Optional but recommended to limit the size of your system closure.
inputs.nixpkgs.follows = "nixpkgs";
};
};
...
};
```

outputs = { self, nixpkgs, lanzaboote, ...}: {
nixosConfigurations = {
yourHost = nixpkgs.lib.nixosSystem {
system = "x86_64-linux";
**Step 1b**. Modify `flake.nix`: Add `lanzaboote` module to
`nixosConfigurations.<hostname>.modules` in `outputs`

```nix
outputs = { self, nixpkgs, lanzaboote, ...}: {
nixosConfigurations.<hostname> = {
nixpkgs.lib.nixosSystem {
...
modules = [
# This is not a complete NixOS configuration and you need to reference
# your normal configuration here.
lanzaboote.nixosModules.lanzaboote # Add
configuration.nix # Example
hardware-configuration.nix # Example
...
];
...
};
};
};
```

lanzaboote.nixosModules.lanzaboote
Replace `<hostname>` with your device's `hostname`.

({ pkgs, lib, ... }: {

environment.systemPackages = [
# For debugging and troubleshooting Secure Boot.
pkgs.sbctl
];
**Step 2**. Modify `configuration.nix`: Disable `systemd-boot` module and enable `lanzaboot`

# Lanzaboote currently replaces the systemd-boot module.
# This setting is usually set to true in configuration.nix
# generated at installation time. So we force it to false
# for now.
boot.loader.systemd-boot.enable = lib.mkForce false;
```nix
{config, lib, pkgs, ...}: {
...
environment.systemPackages = with pkgs; [
...
# For debugging and troubleshooting Secure Boot
sbctl
];
boot = {
# Lanzaboote currently replaces the systemd-boot module.
# This setting is usually set to true in configuration.nix
# generated at installation time. So we force it to false
# for now.
loader.systemd-boot.enable = lib.mkForce false;

boot.lanzaboote = {
enable = true;
pkiBundle = "/var/lib/sbctl";
};
})
];
};
lanzaboote = {
enable = true;
pkiBundle = "/var/lib/sbctl";
};
};
...
}
```

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