as a flake

flake.lock

@@ -0,0 +1,62 @@
+{
+  "nodes": {
+    "nixlib": {
+      "locked": {
+        "lastModified": 1708217146,
+        "narHash": "sha256-nGfEv7k78slqIR5E0zzWSx214d/4/ZPKDkObLJqVLVw=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "e623008d8a46517470e6365505f1a3ce171fa46a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
+    "nixos-generators": {
+      "inputs": {
+        "nixlib": "nixlib",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1708402276,
+        "narHash": "sha256-7ZTUHdMwy8o6d8ela6H7H3UcS7cyns4D1zuWbmU1dCI=",
+        "owner": "nix-community",
+        "repo": "nixos-generators",
+        "rev": "fa146e1a156c83b009b398213c661d6b46d71421",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixos-generators",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1708294118,
+        "narHash": "sha256-evZzmLW7qoHXf76VCepvun1esZDxHfVRFUJtumD7L2M=",
+        "rev": "e0da498ad77ac8909a980f07eff060862417ccf7",
+        "revCount": 555878,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.2311.555878%2Brev-e0da498ad77ac8909a980f07eff060862417ccf7/018dc208-7d9b-7b50-b6ba-496aa2db6fca/source.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/%2A.tar.gz"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixos-generators": "nixos-generators",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,31 @@
+{
+  inputs = {
+    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/*.tar.gz";
+    nixos-generators.url = "github:nix-community/nixos-generators";
+    nixos-generators.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = { self, nixpkgs, nixos-generators, ... }:
+    let
+      # helpers for producing system-specific outputs
+      supportedSystems = [
+        "aarch64-linux"
+        "riscv64-linux"
+        "x86_64-linux"
+      ];
+      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
+        pkgs = import nixpkgs { inherit system; };
+        inherit system;
+      });
+    in
+    {
+      packages = forEachSupportedSystem ({ pkgs, system, ... }: {
+        default = nixos-generators.nixosGenerate {
+          inherit system;
+          format = "install-iso";
+
+          modules = [ ./iso.nix ];
+        };
+      });
+    };
+}

iso.nix

@@ -1,10 +1,6 @@
 { lib, pkgs, config, ... }:
 
 {
-  imports = [
-    <nixpkgs/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix>
-  ];
-
   boot = {
     kernelPackages = pkgs.linuxPackages_latest;
     # since the latest kernel package is installed, there will be a ZFS conflict because