create bootable nixos system

flake.lock

@@ -1,5 +1,41 @@
 {
   "nodes": {
+    "nixlib": {
+      "locked": {
+        "lastModified": 1736643958,
+        "narHash": "sha256-tmpqTSWVRJVhpvfSN9KXBvKEXplrwKnSZNAoNPf/S/s=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "1418bc28a52126761c02dd3d89b2d8ca0f521181",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
+    "nixos-generators": {
+      "inputs": {
+        "nixlib": "nixlib",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1751903740,
+        "narHash": "sha256-PeSkNMvkpEvts+9DjFiop1iT2JuBpyknmBUs0Un0a4I=",
+        "owner": "nix-community",
+        "repo": "nixos-generators",
+        "rev": "032decf9db65efed428afd2fa39d80f7089085eb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixos-generators",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1751637120,
@@ -17,6 +53,7 @@
     },
     "root": {
       "inputs": {
+        "nixos-generators": "nixos-generators",
         "nixpkgs": "nixpkgs"
       }
     }

flake.nix

@@ -3,9 +3,13 @@
 
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-unstable";
+    nixos-generators = {
+      url = "github:nix-community/nixos-generators";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
-  outputs = { self, nixpkgs }:
+  outputs = { self, nixpkgs, nixos-generators, ... }:
     let
       lastModifiedDate = self.lastModifiedDate or self.lastModified or "19700101";
       version = builtins.substring 0 8 lastModifiedDate;
@@ -25,6 +29,34 @@
             src = ./client;
             vendorHash = null;
           };
+          boot-env-iso = nixos-generators.nixosGenerate {
+            inherit system;
+            format = "iso";
+            modules = [
+              ({modulesPath, ...}: {
+                imports = [
+                  (modulesPath + "/profiles/minimal.nix")
+                  (modulesPath + "/profiles/base.nix")
+                ];
+
+                # Disable unneeded features
+                ## boot.loader.grub.enable = true;
+                ## boot.loader.grub.device = "nodev";
+                documentation.enable = false;
+                fonts.fontconfig.enable = false;
+                services.udisks2.enable = false;
+
+                services.getty.autologinUser = "root";
+
+                environment.etc."profile.local".text = ''
+                  # Minimal shell prompt
+                  echo "It works!"
+                '';
+
+                isoImage.squashfsCompression = "gzip -Xcompression-level 1";
+            })
+          ];
+        };
         });
 
         devShells = forAllSystems (system: