modularize cluster configs

nixops/ekman/default.nix

@@ -8,6 +8,11 @@ let
 
   nodes = import ./nodes.nix;
 
+  cluster = {
+    compute = true;
+    k8sNode = true;
+  };
+
   compute = {
     # deployment.tags = [ "compute" ];
 
@@ -39,7 +44,10 @@ let
   in {
     "${host.name}" = {
       features = {
-        inherit host;
+        host = {
+          name = host.name;
+          address = host.address;
+        };
         os.externalInterface = "enp33s0f0np0";
         hpc.compute = true;
         # k8s = { inherit etcdCluster; };
@@ -51,9 +59,6 @@ let
       #   KERNEL=="ibp65s0", SUBSYSTEM=="net", ATTR{create_child}:="0x2222"
       # '';
 
-      node = {
-      };
-
       networking = {
         useDHCP = false;
         interfaces.enp33s0f0np0 = {