Use hex archive path without -otp-MAJOR

Author: wojtekmach

rel/app/standalone.exs

@@ -112,8 +112,23 @@ defmodule Standalone do
     File.mkdir_p!(release_archives_dir)
 
     hex_version = Keyword.fetch!(Application.spec(:hex), :vsn)
-    source_hex_path = Path.join(Mix.path_for(:archives), "hex-#{hex_version}-otp-#{System.otp_release()}")
-    release_hex_path = Path.join(release_archives_dir, "hex-#{hex_version}-otp-#{System.otp_release()}")
+
+    source_hex_path =
+      Path.join(Mix.path_for(:archives), "hex-#{hex_version}-otp-#{System.otp_release()}")
+
+    # TODO: Handling both paths for now, need to investigate why this broke.
+    source_hex_path =
+      if File.exists?(source_hex_path) do
+        source_hex_path
+      else
+        path = Path.join(Mix.path_for(:archives), "hex-#{hex_version}")
+        Mix.shell().info("warning: #{source_hex_path} not found")
+        path
+      end
+
+    release_hex_path =
+      Path.join(release_archives_dir, "hex-#{hex_version}-otp-#{System.otp_release()}")
+
     cp_r!(source_hex_path, release_hex_path)
 
     release