From 7fef3c52873e31e863e966b4677cc1f58c57d699 Mon Sep 17 00:00:00 2001
From: Benedikt Reinartz <filmor@gmail.com>
Date: Mon, 24 Jun 2024 22:30:30 +0200
Subject: [PATCH] Recompile if the NIF library is changed/deleted (#624)

---
 rustler_mix/lib/rustler.ex          | 7 +++++++
 rustler_mix/lib/rustler/compiler.ex | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/rustler_mix/lib/rustler.ex b/rustler_mix/lib/rustler.ex
index 49d72f02..950dcc10 100644
--- a/rustler_mix/lib/rustler.ex
+++ b/rustler_mix/lib/rustler.ex
@@ -104,6 +104,13 @@ defmodule Rustler do
       end
 
       if config.lib do
+        {otp_app, path} = config.load_from
+
+        @external_resource Application.app_dir(
+                             otp_app,
+                             "#{path}.#{Rustler.Compiler.get_lib_suffix()}"
+                           )
+
         @load_from config.load_from
         @load_data config.load_data
         @load_data_fun config.load_data_fun
diff --git a/rustler_mix/lib/rustler/compiler.ex b/rustler_mix/lib/rustler/compiler.ex
index dc04df38..14f764bd 100644
--- a/rustler_mix/lib/rustler/compiler.ex
+++ b/rustler_mix/lib/rustler/compiler.ex
@@ -197,6 +197,8 @@ defmodule Rustler.Compiler do
     end
   end
 
+  def get_lib_suffix(), do: get_suffix(nil, :lib)
+
   defp get_suffix(target, :lib) do
     case get_target_os_type(target) do
       {:win32, _} -> "dll"