From 0ccbe8b66c811f59216520d1e81428effc12c005 Mon Sep 17 00:00:00 2001
From: dl-alexandre <166029845+dl-alexandre@users.noreply.github.com>
Date: Thu, 21 May 2026 19:03:09 -0700
Subject: [PATCH] fix: start IEx before connect handoff

---
 lib/mix/tasks/mob.connect.ex        | 17 +++++++++++++----
 test/mix/tasks/mob_connect_test.exs | 12 ++++++++++++
 2 files changed, 25 insertions(+), 4 deletions(-)
 create mode 100644 test/mix/tasks/mob_connect_test.exs

diff --git a/lib/mix/tasks/mob.connect.ex b/lib/mix/tasks/mob.connect.ex
index d0b8233..7f79188 100644
--- a/lib/mix/tasks/mob.connect.ex
+++ b/lib/mix/tasks/mob.connect.ex
@@ -157,9 +157,18 @@ defmodule Mix.Tasks.Mob.Connect do
     end)
 
     # Hand off to IEx in this process — tunnels stay alive via adb daemon.
-    # `IEx.Server.run/1` is the documented programmatic-start surface
-    # (added in 1.8.0). The old `IEx.start/0` was internal and removed
-    # in 1.20-rc.4.
-    IEx.Server.run([])
+    ensure_iex_started()
+    IEx.start()
+  end
+
+  @doc false
+  def ensure_iex_started do
+    case Application.ensure_all_started(:iex) do
+      {:ok, _apps} ->
+        :ok
+
+      {:error, {app, reason}} ->
+        Mix.raise("Failed to start #{inspect(app)} before launching IEx: #{inspect(reason)}")
+    end
   end
 end
diff --git a/test/mix/tasks/mob_connect_test.exs b/test/mix/tasks/mob_connect_test.exs
new file mode 100644
index 0000000..516bab1
--- /dev/null
+++ b/test/mix/tasks/mob_connect_test.exs
@@ -0,0 +1,12 @@
+defmodule Mix.Tasks.Mob.ConnectTest do
+  use ExUnit.Case, async: true
+
+  alias Mix.Tasks.Mob.Connect
+
+  test "ensure_iex_started/0 starts the IEx application" do
+    Application.stop(:iex)
+
+    assert :ok = Connect.ensure_iex_started()
+    assert {:ok, _} = Application.ensure_all_started(:iex)
+  end
+end