feat: use a host attribute to make the config less verbose/complex

machines/earth.nix

@@ -18,6 +18,10 @@ Notes:
   name = "earth";
   ip_pub = "193.1.99.79";
   hostname = "${name}.skynet.ie";
+  host = {
+    ip = ip_pub;
+    name = name;
+  };
 in {
   imports = [
     ../applications/skynet.ie.nix
@@ -47,16 +51,10 @@ in {
   ];
 
   services.skynet.backup = {
-    host = {
-      ip = ip_pub;
-      name = name;
-    };
+    host = host;
   };
 
   services.skynet = {
-    host = {
-      ip = ip_pub;
-      name = name;
-    };
+    host = host;
   };
 }