fix: try 'writeShellApplication' for 'astyanax' WOL script

hosts/andromache/default.nix

@@ -8,6 +8,7 @@
 
 let
   username = "h";
+  wolInterfaces = import ./wol-interfaces.nix;
 in
 {
   imports = [
@@ -125,7 +126,7 @@ in
     interfaces = {
       eno1 = {
         wakeOnLan.enable = true;
-        macAddress = "02:68:b3:29:da:98";
+        macAddress = wolInterfaces.eno1.macAddress;
       };
     };
     firewall = {

hosts/andromache/wol-interfaces.nix

@@ -0,0 +1,3 @@
+{
+  eno1.macAddress = "02:68:b3:29:da:98";
+}

hosts/astyanax/default.nix

@@ -9,6 +9,7 @@
 let
   username = "h";
   hostName = "astyanax";
+  wolInterfaces = import ../andromache/wol-interfaces.nix;
 in
 {
   imports = [
@@ -43,7 +44,16 @@ in
 
   secrets.username = username;
 
-  environment.systemPackages = [ inputs.nvim.packages.x86_64-linux.nvim ];
+  environment.systemPackages = [
+    inputs.nvim.packages.x86_64-linux.nvim
+    (pkgs.writeShellApplication {
+      name = "wol-andromache";
+      runtimeInputs = [ pkgs.wakeonlan ];
+      text = ''
+        wakeonlan ${wolInterfaces.eno1.macAddress}
+      '';
+    })
+  ];
 
   home-manager = {
     useGlobalPkgs = true;