derive domain from server type

nixos/machines/default.nix

@@ -4,11 +4,7 @@
     type = "physical";
 
     nixosModule = {
-      networking = {
+      networking.hostName = "jefke";
-        hostName = "jefke";
-        # TODO: generate this using type?
-        domain = "hyp";
-      };
 
       lab = {
         terraformDatabase.enable = true;
@@ -34,10 +30,7 @@
     nixosModule = { config, ... }:
       let inherit (config.lab.networking) dmzServicesIPv4 dmzServicesIPv6; in
       {
-        networking = {
+        networking.hostName = "atlas";
-          hostName = "atlas";
-          domain = "hyp";
-        };
 
         lab = {
           networking = {
@@ -65,10 +58,7 @@
     type = "physical";
 
     nixosModule = { pkgs, ... }: {
-      networking = {
+      networking.hostName = "lewis";
-        hostName = "lewis";
-        domain = "hyp";
-      };
 
       lab = {
         dataHost.enable = true;
@@ -96,10 +86,7 @@
         echo "Hello world from inside a virtual machine!!" | ${pkgs.lolcat}/bin/lolcat
       '';
 
-      networking = {
+      networking.hostName = "my-microvm";
-        hostName = "my-microvm";
-        domain = "dmz";
-      };
 
       lab.vmMacAddress = "BA:DB:EE:F0:00:00";
     };

nixos/modules/networking/default.nix

@@ -89,6 +89,7 @@ in {
 
   config = {
     networking = {
+      domain = if machine.type == "physical" then "hyp" else "dmz";
       nftables.enable = true;
       useDHCP = machine.type == "virtual";
 

nixos/physical.nix

@@ -1,4 +1,4 @@
-{ pkgs, config, lib, modulesPath, machine, microvm, disko, agenix, machines, ... }: {
+{ pkgs, config, lib, modulesPath, microvm, disko, agenix, machines, ... }: {
   imports = [
     (modulesPath + "/installer/scan/not-detected.nix")
     microvm.nixosModules.host