restructured & first test of toggleable config

modules/homelab/nfs.nix

@@ -8,11 +8,17 @@ let
   '';
 in
 {
-  # enable nfs with all exports
-  services.nfs = {
-    server = {
-      enable = true;
-      exports = nfsExports;
+  options = {
+    homelab.nfs.enable = lib.mkEnableOption "enables nfs";
+  };
+
+  config = lib.mkIf config.homelab.nfs.enable {
+    # enable nfs with all exports
+    services.nfs = {
+      server = {
+        enable = true;
+        exports = nfsExports;
+      };
     };
   };
 }

modules/homelab/smb.nix

@@ -18,10 +18,15 @@ let
   };
 in
 {
-  # enable smb with all shares
-  services.samba = {
-    enable = true;
-    settings = smbShares;
+  options = {
+    homelab.smb.enable = lib.mkEnableOption "enables smb";
   };
 
+  config = lib.mkIf config.homelab.smb.enable {
+    # enable smb with all shares
+    services.samba = {
+      enable = true;
+      settings = smbShares;
+    };
+  };
 }

modules/homelab/zfs.nix

@@ -1,22 +1,28 @@
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
 {
 
-  # set network host id
-  networking.hostId = "3e6e7055";
+  options = {
+    homelab.zfs.enable = lib.mkEnableOption "enables zfs";
+  };
 
-  # enable zfs support
-  boot.kernelModules = [ "zfs" ];
-  boot.supportedFilesystems = [ "zfs" ];
+  config = lib.mkIf config.homelab.zfs.enable {
+    # set network host id
+    networking.hostId = "3e6e7055";
 
-  # enable smart monitoring
-  services.smartd.enable = true;
+    # enable zfs support
+    boot.kernelModules = [ "zfs" ];
+    boot.supportedFilesystems = [ "zfs" ];
 
-  # enable zfs
-  services.zfs = {
-    autoScrub.enable = true;
-    autoScrub.interval = "weekly";
+    # enable smart monitoring
+    services.smartd.enable = true;
 
+    # enable zfs
+    services.zfs = {
+      autoScrub.enable = true;
+      autoScrub.interval = "weekly";
+  
+    };
   };
 
 }