From 454fc6e7459d7243f8a4ee488d606895f6fc1eec Mon Sep 17 00:00:00 2001
From: Ruoyu Zhong <zhongruoyu@outlook.com>
Date: Sat, 23 Aug 2025 20:52:26 +0800
Subject: [PATCH] diagnostic: fix undefined `ohai` method

Fixes #20555.
---
 Library/Homebrew/diagnostic.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Library/Homebrew/diagnostic.rb b/Library/Homebrew/diagnostic.rb
index 154570db7b..b00517b557 100644
--- a/Library/Homebrew/diagnostic.rb
+++ b/Library/Homebrew/diagnostic.rb
@@ -57,6 +57,7 @@ module Homebrew
     # Diagnostic checks.
     class Checks
       include SystemCommand::Mixin
+      include Utils::Output::Mixin
 
       sig { params(verbose: T::Boolean).void }
       def initialize(verbose: true)