Do not install ares on neelix.

nix/configuration/hosts/odo/default.nix

@@ -31,6 +31,7 @@
 
   me.alacritty.enable = true;
   me.ansible.enable = true;
+  me.ares.enable = true;
   me.emacs_flavor = "full";
   me.graphical = true;
   me.graphicsCardType = "amd";

nix/configuration/roles/ares/default.nix

@@ -8,7 +8,23 @@
 {
   imports = [ ];
 
-  environment.systemPackages = with pkgs; [
-    ares
-  ];
+  options.me = {
+    ares.enable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      example = true;
+      description = "Whether we want to install ares.";
+    };
+  };
+
+  config = lib.mkIf config.me.ares.enable (
+    lib.mkMerge [
+      { }
+      (lib.mkIf config.me.graphical {
+        environment.systemPackages = with pkgs; [
+          ares
+        ];
+      })
+    ]
+  );
 }