ensure that hex is installed and started

if mix is started before run it will not start hex correctly

Author: lukaszsamson

apps/elixir_ls_utils/lib/launch.ex

@@ -3,6 +3,7 @@ defmodule ElixirLS.Utils.Launch do
   @compiled_otp_version System.otp_release()
 
   def start_mix do
+    Hex.start()
     # FIXME: Private API
     Mix.start()
     # FIXME: Private API

apps/language_server/lib/language_server/cli.ex

@@ -28,6 +28,8 @@ defmodule ElixirLS.LanguageServer.CLI do
     start_language_server()
 
     Logger.info("Started ElixirLS v#{Launch.language_server_version()}")
+    
+    Logger.info("Running in #{File.cwd!()}")
 
     versions = Launch.get_versions()
 
@@ -47,7 +49,8 @@ defmodule ElixirLS.LanguageServer.CLI do
 
     Mix.shell(ElixirLS.LanguageServer.MixShell)
     # FIXME: Private API
-    Mix.Hex.ensure_updated?()
+    true = Mix.Hex.ensure_installed?(false)
+    true = Mix.Hex.ensure_updated?()
 
     WireProtocol.stream_packets(&JsonRpc.receive_packet/1)
   end