delphix

from the Oracle of Delphi + nix

Library for testing and deploying your disko + NixOS configurations.

Usage

You need to declare 2 NixOS configurations.

target configuration. This will be the configuration that you want to deploy, which includes a disko config.
installer configuration. This will be a minimal NixOS configuration, that includes the instructions to install target.

To configure the installer, declare an output like so:

{
  inputs.delphix.url = "github:viperML/delphix";

  outputs = {self, nixpkgs, delphix, ...}: {

    nixosConfigurations."nixos" = nixpkgs.lib.nixosSystem {
      # Regular NixOS config with disko
    };

    nixosConfigurations."installer" = nixpkgs.lib.nixosSystem {
      system = "x86_64-linux";
      modules = [
        delphix.nixosModules.installer
        {delphix.target = self.nixosConfigurations."nixos";}
      ];
    };

  };
}

Build the VM installer and run it:

nix build .#nixosConfigurations.installer.config.delphix.vm-interactive -L
./result/bin/nixos-vm-installer

Limitations

Only 1 disk (/dev/vda)
Properly handle cross-system
...