From 1148636e3dfb3aa25485b6e5cf40c043df848c07 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Mon, 19 Dec 2022 17:29:21 +0900
Subject: [PATCH] [ruby/irb] PTY module is platform dependent

https://github.com/ruby/irb/commit/dbb3dc72ff
---
 test/irb/test_debug_cmd.rb | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/test/irb/test_debug_cmd.rb b/test/irb/test_debug_cmd.rb
index 9aafbec7f0..4d1bb6d6b9 100644
--- a/test/irb/test_debug_cmd.rb
+++ b/test/irb/test_debug_cmd.rb
@@ -1,6 +1,11 @@
 # frozen_string_literal: true
 
-require "pty" unless RUBY_ENGINE == 'truffleruby'
+begin
+  require "pty"
+rescue LoadError
+  return
+end
+
 require "tempfile"
 require "tmpdir"
 require "envutil"