nisosProfiles: add installer

nix/nixosProfiles/default.nix

@@ -6,6 +6,7 @@ in
 {
   blade = importProfile ./blade.nix;
   common = importProfile ./common.nix;
+  installer = importProfileMod ./installer.nix;
   pveGuest = importProfile ./pveGuest.nix;
   pveGuestHwSupport.nix = importProfile ./pveGuestHwSupport.nix;
 }

nix/nixosProfiles/installer.nix

@@ -0,0 +1,29 @@
+# applies to self-built installers, esp. auto installers
+
+{ inputs, ... }@flakeArg:
+{
+  config,
+  lib,
+  modulesPath,
+  ...
+}:
+{
+  imports = [
+    # from nixpkgs
+    "${modulesPath}/installer/cd-dvd/installation-cd-minimal.nix" # includes allHardware configs
+    # from flake inputs
+    inputs.unattended-installer.nixosModules.default
+    # from here
+    ./common.nix
+    ./pveGuestHwSupport.nix
+  ];
+  config = {
+    isoImage = {
+      isoBaseName = "nixos-${config.isoImage.edition}";
+      squashfsCompression = "zstd"; # more efficient
+    };
+    networking.domain = lib.mkDefault "temp.6nw.de"; # acceptable here because temporary
+    system.stateVersion = lib.versions.majorMinor config.system.nixos.version;
+    # installer does not necessarily need working SSH access & an extra user for that
+  };
+}