Write modules before verification so modules can be found during verification

Author: josevalim

lib/elixir/lib/kernel/parallel_compiler.ex

@@ -258,13 +258,6 @@ defmodule Kernel.ParallelCompiler do
     {status, modules_or_errors, info} =
       try do
         spawn_workers(schedulers, cache, files, output, options)
-      else
-        {:ok, outcome, info} ->
-          beam_timestamp = Keyword.get(options, :beam_timestamp)
-          {:ok, write_module_binaries(outcome, output, beam_timestamp), info}
-
-        {:error, errors, info} ->
-          {:error, errors, info}
       after
         Module.ParallelChecker.stop(cache)
       end
@@ -288,6 +281,7 @@ defmodule Kernel.ParallelCompiler do
 
     {outcome, state} =
       spawn_workers(files, %{}, %{}, [], %{}, [], [], %{
+        beam_timestamp: Keyword.get(options, :beam_timestamp),
         dest: Keyword.get(options, :dest),
         each_cycle: Keyword.get(options, :each_cycle, fn -> {:runtime, [], []} end),
         each_file: Keyword.get(options, :each_file, fn _, _ -> :ok end) |> each_file(),
@@ -345,9 +339,10 @@ defmodule Kernel.ParallelCompiler do
   ## Verification
 
   defp verify_modules(result, compile_warnings, dependent_modules, state) do
+    modules = write_module_binaries(result, state.output, state.beam_timestamp)
     runtime_warnings = maybe_check_modules(result, dependent_modules, state)
     info = %{compile_warnings: Enum.reverse(compile_warnings), runtime_warnings: runtime_warnings}
-    {{:ok, result, info}, state}
+    {{:ok, modules, info}, state}
   end
 
   defp maybe_check_modules(result, runtime_modules, state) do