fix(mumble): Persist data

modules/home/emacs.nix

@@ -8,6 +8,7 @@ in {
       description = ''
         The path to the Emacs user directory.
       '';
+      # Mutable config.
       default = "/persist/dots/modules/home/users/msyds/emacs";
       type = lib.types.path;
     };