Do not install steam or terraform on neelix.

nix/configuration/roles/steam/default.nix

@@ -8,16 +8,18 @@
 {
   imports = [ ];
 
-  options.me.games = lib.mkOption {
-    type = lib.types.bool;
-    default = config.me.graphical;
-    example = true;
-    description = "Whether we want to install games.";
+  options.me = {
+    steam.enable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      example = true;
+      description = "Whether we want to install steam.";
+    };
   };
 
-  config = (
+  config = lib.mkIf config.me.steam.enable (
     lib.mkMerge [
-      (lib.mkIf config.me.games {
+      (lib.mkIf config.me.graphical {
         allowedUnfree = [
           "steam"
           "steam-original"
@@ -45,5 +47,4 @@
       })
     ]
   );
-
 }