Add toplevel module, and enable modules in config

lib/default.nix

@@ -40,7 +40,7 @@ in {
         }
       ];
 
-      imports = [ host.hw ./k8s.nix ];
+      imports = [ host.hw ./modules.nix ];
     };
 
     node = host: self: {
@@ -57,7 +57,7 @@ in {
         }
       ];
 
-      imports = [ host.hw ./k8s.nix ];
+      imports = [ host.hw ./modules.nix ];
     };
 
     mkDeployment = master: nodes:
@@ -82,7 +82,7 @@ in {
         }
       ];
 
-      imports = [ host.hw ./fs.nix ];
+      imports = [ host.hw ./modules.nix ];
     };
 
     mkDeployment = nodes:
@@ -104,7 +104,7 @@ in {
         }
       ];
 
-      imports = [ host.hw ./os.nix ];
+      imports = [ host.hw ./modules.nix ];
     };
 
     mkDeployment = masterNode: workerNodes:

lib/fs.nix

@@ -42,6 +42,7 @@ let
   };
 in {
   options.cluster.fs = {
+    enable = mkEnableOption "Enable nfs fileserver";
     nfs = {
       enable = mkEnableOption "Enable nfs fileserver";
       exports = mkOption {
@@ -52,13 +53,13 @@ in {
     glusterfs.enable = mkEnableOption "Enable glusterfs fileserver";
   };
 
-  config = mkMerge [
+  config = mkIf cfg.enable (
+    mkMerge [
       common
-
       (mkIf cfg.nfs.enable nfs)
-
       (mkIf cfg.glusterfs.enable glusterfs)
-  ];
+    ]
+  );
 
   imports = [ ./os.nix ];
 }

lib/k8s.nix

@@ -204,6 +204,7 @@ let
 
 in {
   options.cluster.k8s = {
+    enable = mkEnableOption "Enable kubernetes";
     nodes = mkOption {
       type = types.listOf types.attrs;
       default = [];
@@ -211,12 +212,12 @@ in {
 
     fileserver = mkOption {
       type = types.str;
-      default = "127.0.0.1";
+      default = null;
     };
 
     cidr = mkOption {
       type = types.str;
-      default = "10.11.0.0/16";
+      default = "10.0.0.0/16";
     };
 
     master = {
@@ -270,10 +271,12 @@ in {
     };
   };
 
-  config = mkMerge [
+  config = mkIf cfg.k8s.enable (
+    mkMerge [
       (mkIf cfg.k8s.master.enable kubeMaster)
       (mkIf cfg.k8s.node.enable kubeNode)
-  ];
+    ]
+  );
 
   imports = [ ./os.nix ];
 }

lib/modules.nix

@@ -0,0 +1,7 @@
+{
+  imports = [
+    ./os.nix
+    ./fs.nix
+    ./k8s.nix
+  ];
+}

lib/os.nix

@@ -55,8 +55,8 @@ in
 
     networking = {
       hostName = cfg.hostName;
-      domain = cfg.domain;
-      search = cfg.searchDomains;
+      # domain = cfg.domain;
+      # search = cfg.searchDomains;
       extraHosts = cfg.extraHosts;
     };