test: added a test for physical servers.

They wont be built/deployed now without an ip assigned.

See the "fun" over here https://discord.com/channels/689189992417067052/1118476661604765746/1125914392102445220

machines/agentjones.nix

@@ -19,6 +19,7 @@ let
 
 in {
   imports = [
+    ./hardware/_base.nix
     ./hardware/RM001.nix
   ];
 

machines/hardware/_base.nix

@@ -0,0 +1,17 @@
+{ config, options, lib, ... }: with lib;
+let
+  # get a list of interfaces
+  interfaces = attrNames config.networking.interfaces;
+  # check if an IP has been assigned
+  has_ip = interface: (length config.networking.interfaces."${interface}".ipv4.addresses) != 0;
+in {
+  config = {
+    assertions = [
+      {
+        assertion = lists.any has_ip interfaces;
+        message = "Must have a ip address set";
+      }
+    ];
+  };
+
+}

machines/neuromancer.nix

@@ -20,6 +20,7 @@ let
 
 in {
   imports = [
+    ./hardware/_base.nix
     ./hardware/RM007.nix
     ../applications/restic.nix
   ];

machines/vendetta.nix

@@ -22,7 +22,7 @@ let
   ns = "ns1";
 in {
   imports = [
-    # the physical hardware for this
+    ./hardware/_base.nix
     ./hardware/RM002.nix
   ];