server10: build isos for host

flake.nix

@@ -715,6 +715,13 @@
       nixosModules = {
         c3d2 = {
           imports = [
+            # adds config.system.build.isoImage which can be used to build an iso for any system
+            # which is very useful to get its networking configuration
+            ({ config, modulesPath, ... }: {
+              imports = lib.singleton "${modulesPath}/installer/cd-dvd/installation-cd-minimal.nix";
+              isoImage.edition = lib.mkForce config.networking.hostName;
+            })
+
             c3d2-user-module.nixosModule
             disko.nixosModules.disko
             nixos-modules.nixosModule

hosts/server10/default.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 {
   imports = [
@@ -13,7 +13,7 @@
   };
 
   boot = {
-    loader.grub = {
+    loader.grub = lib.mkIf (!options?isoImage) {
       enable = true;
       device = "/dev/sda";
     };

modules/microvm-host.nix

@@ -1,4 +1,4 @@
-{ self, config, lib, pkgs, ... }:
+{ self, config, lib, options, pkgs, ... }:
 {
   options = with lib; {
     c3d2.deployment.microvmBaseZfsDataset = mkOption {
@@ -21,6 +21,9 @@
         builtins.filter (name:
           (self.nixosConfigurations.${name}.config.c3d2.deployment.server or null) == config.networking.hostName
         ) (builtins.attrNames self.nixosConfigurations);
+
+      # don't enable microvm host options in live iso's
+      host.enable = if (options?isoImage) then false else true;
     };
 
     systemd.services = {