From 631db5502ddbc47daa63b4f21961f9550f611941 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Fri, 26 Aug 2022 12:38:03 +0000
Subject: [PATCH] diagnostic: automatically tap homebrew/core.

Otherwise, this just dies with `Error: No available tap homebrew/core.`.
---
 Library/Homebrew/diagnostic.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/diagnostic.rb b/Library/Homebrew/diagnostic.rb
index ef97876392..178b346167 100644
--- a/Library/Homebrew/diagnostic.rb
+++ b/Library/Homebrew/diagnostic.rb
@@ -591,7 +591,11 @@ module Homebrew
 
       def check_coretap_integrity
         coretap = CoreTap.instance
-        return if !coretap.installed? && EnvConfig.install_from_api?
+        unless coretap.installed?
+          return if EnvConfig.install_from_api?
+
+          CoreTap.ensure_installed!
+        end
 
         broken_tap(coretap) || examine_git_origin(coretap.path, Homebrew::EnvConfig.core_git_remote)
       end