From 64d368aeb93323fbf51790d306d0729cc29c5a8f Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Wed, 10 Aug 2022 15:15:21 +0100
Subject: [PATCH] missing_formula: message for postgres rename.

PostgreSQL is being renamed to always be a versioned formula so handle
when people type `brew install postgresql`.
---
 Library/Homebrew/missing_formula.rb | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Library/Homebrew/missing_formula.rb b/Library/Homebrew/missing_formula.rb
index c2bfa50f6e..a3736fede8 100644
--- a/Library/Homebrew/missing_formula.rb
+++ b/Library/Homebrew/missing_formula.rb
@@ -89,6 +89,12 @@ module Homebrew
           uconv is part of the icu4c formula:
             brew install icu4c
         EOS
+        when "postgresql", "postgres" then <<~EOS
+          postgresql breaks existing databases on upgrade without human intervention.
+
+          See a more specific version to install with:
+            brew formulae | grep postgresql@
+        EOS
         end
       end
       alias generic_disallowed_reason disallowed_reason