create bootable nixos system

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: