added stuff

nyx/flake/iso-images.nix

@@ -0,0 +1,27 @@
+{
+  inputs,
+  self,
+  ...
+}: let
+  installerModule = "${inputs.nixpkgs}/nixos/modules/installer/sd-card/sd-image-aarch64-new-kernel-no-zfs-installer.nix";
+in {
+  # ISO images based on available hosts. We avoid basing ISO images
+  # on active (i.e. desktop) hosts as they likely have secrets set up.
+  # Images below are designed specifically to be used as live media
+  # and can be built with `nix build .#images.<hostname>`
+  # alternatively hosts can be built with `nix build .#nixosConfigurations.hostName.config.system.build.isoImage`
+  flake.images = let
+    gaea = self.nixosConfigurations."gaea";
+    erebus = self.nixosConfigurations."erebus";
+    atlas = self.nixosConfigurations."atlas".extendModules {modules = [installerModule];};
+  in {
+    # Installation iso
+    gaea = gaea.config.system.build.isoImage;
+
+    # air-gapped VM
+    erebus = erebus.config.system.build.isoImage;
+
+    # Raspberry Pi 400
+    atlas = atlas.config.system.build.sdImage;
+  };
+}