Still a work in progress.

tests/networkd-phobos.nix

@@ -2,49 +2,35 @@
 let
   system = "x86_64-linux";
 
-  # Bring in nixpkgs and lib
+  # Grab nixpkgs lib for convenience
   pkgs = import <nixpkgs> { inherit system; };
   lib = pkgs.lib;
 
-  # Your world + addressing lib
+  # Metanix world + addressing
   meta = import ../meta.nix;
   addressing = import ../lib/addressing { inherit lib; };
 
-  # NixOS module system library
-  nixosLib = import <nixpkgs/nixos/lib> {
-    inherit lib;
+  network = addressing.mkNetworkFromSpec meta;
+
+  # Fake NixOS config that your module expects
+  config = {
+    networking.hostName = "phobos";
+    metanix = {
+      thisHost = "phobos";
+      inherit network;
+    };
   };
 
-  # All standard NixOS modules (as a list)
-  baseModules = import <nixpkgs/nixos/modules/module-list.nix>;
-
-  # Evaluate modules as if this were a NixOS system
-  evalResult = nixosLib.evalModules {
-    modules =
-      baseModules
-      ++ [
-        # Metanix core wiring (meta + addressing)
-        ../modules/metanix/core.nix
-
-        # systemd-networkd integration
-        ../modules/metanix/networkd.nix
-
-        # Local stub: "this machine is phobos"
-        {
-          networking.hostName = "phobos";
-          metanix.thisHost = "phobos";
-        }
-      ];
-
-    # Args passed to all modules: { lib, pkgs, system, meta, addressing, modulesPath, ... }
-    specialArgs = {
-      inherit lib pkgs system meta addressing;
-      modulesPath = builtins.toString <nixpkgs/nixos/modules>;
-    };
+  # Call the networkd module directly as a function
+  networkdModule = import ../modules/metanix/networkd.nix {
+    inherit lib config;
   };
 in
 {
-  systemdNetwork = evalResult.config.systemd.network;
-  metanixHost = evalResult.config.metanix.network.hosts.phobos;
-  metanixSubnet = evalResult.config.metanix.network.subnets."home-main";
+  # Raw Metanix view
+  metanixHost = network.hosts.phobos;
+  metanixSubnet = network.subnets."home-main";
+
+  # What the module actually emits
+  systemdNetwork = networkdModule.config.systemd.network;
 }