Add instructions for fixing deadlock errorsemj/improve-deadlock-message

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/elixir/lib/kernel/parallel_compiler.ex b/lib/elixir/lib/kernel/parallel_compiler.ex
index 538330ba4..9ff7d9425 100644
--- a/lib/elixir/lib/kernel/parallel_compiler.ex
+++ b/lib/elixir/lib/kernel/parallel_compiler.ex
@@ -441,7 +441,10 @@ defmodule Kernel.ParallelCompiler do
       IO.puts(["  ", String.pad_leading(file, max), " => " | inspect(mod)])
     end
 
-    IO.puts("")
+    IO.puts(
+      "\nEnsure there are no compile-time dependencies between those files " <>
+        "and that the modules they reference exist and are correctly named.\n"
+    )
 
     for {file, _, description} <- deadlock, do: {Path.absname(file), nil, description}
   end