avoid triggering build on settings if there are no changes

Author: lukaszsamson

apps/language_server/lib/language_server/server.ex

@@ -1787,7 +1787,8 @@ defmodule ElixirLS.LanguageServer.Server do
     :ok
   end
 
-  defp set_settings(state = %__MODULE__{}, settings) do
+  defp set_settings(state = %__MODULE__{settings: prev_settings}, settings)
+       when settings != prev_settings do
     enable_dialyzer =
       Dialyzer.check_support() == :ok and Map.get(settings, "autoBuild", true) and
         Map.get(settings, "dialyzerEnabled", true)
@@ -1915,6 +1916,10 @@ defmodule ElixirLS.LanguageServer.Server do
     trigger_build(state)
   end
 
+  defp set_settings(state = %__MODULE__{}, _settings) do
+    state
+  end
+
   defp add_watched_extensions(_server_instance_id, []) do
     :ok
   end