From ca97c0d008f23d537f10fb0bbbcb1f397863abc7 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Thu, 9 May 2024 11:20:43 +0100
Subject: [PATCH] Enable HOMEBREW_AUTOREMOVE by autoremove_default

Enabled `HOMEBREW_AUTOREMOVE` by default, and added
`HOMEBREW_NO_AUTOREMOVE` to disable it.
---
 Library/Homebrew/cleanup.rb                             | 2 +-
 Library/Homebrew/cmd/uninstall.rb                       | 2 +-
 Library/Homebrew/env_config.rb                          | 5 +++++
 Library/Homebrew/sorbet/rbi/dsl/homebrew/env_config.rbi | 3 +++
 4 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/Library/Homebrew/cleanup.rb b/Library/Homebrew/cleanup.rb
index fd0c2d30de8497..0fbfee8aaa8026 100644
--- a/Library/Homebrew/cleanup.rb
+++ b/Library/Homebrew/cleanup.rb
@@ -288,7 +288,7 @@ def clean!(quiet: false, periodic: false)
           cleanup_formula(formula, quiet:, ds_store: false, cache_db: false)
         end
 
-        Cleanup.autoremove(dry_run: dry_run?) if Homebrew::EnvConfig.autoremove?
+        Cleanup.autoremove(dry_run: dry_run?) unless Homebrew::EnvConfig.no_autoremove?
 
         cleanup_cache
         cleanup_empty_api_source_directories
diff --git a/Library/Homebrew/cmd/uninstall.rb b/Library/Homebrew/cmd/uninstall.rb
index 4bc98b2305f823..5bd384181c3ca2 100644
--- a/Library/Homebrew/cmd/uninstall.rb
+++ b/Library/Homebrew/cmd/uninstall.rb
@@ -77,7 +77,7 @@ def run
           )
         end
 
-        Cleanup.autoremove if Homebrew::EnvConfig.autoremove?
+        Cleanup.autoremove unless Homebrew::EnvConfig.no_autoremove?
       end
     end
   end
diff --git a/Library/Homebrew/env_config.rb b/Library/Homebrew/env_config.rb
index 0424212119ed12..559492b633b33a 100644
--- a/Library/Homebrew/env_config.rb
+++ b/Library/Homebrew/env_config.rb
@@ -313,6 +313,11 @@ module EnvConfig
                      "configuration. Please ensure you always run `brew update` before reporting any issues.",
         boolean:     true,
       },
+      HOMEBREW_NO_AUTOREMOVE:                    {
+        description: "If set, calls to `brew cleanup` and `brew uninstall` not automatically " \
+                     "remove unused formula dependents.",
+        boolean:     true,
+      },
       HOMEBREW_NO_BOOTSNAP:                      {
         description: "If set, do not use Bootsnap to speed up repeated `brew` calls.",
         boolean:     true,
diff --git a/Library/Homebrew/sorbet/rbi/dsl/homebrew/env_config.rbi b/Library/Homebrew/sorbet/rbi/dsl/homebrew/env_config.rbi
index 14bc5e01b0b9b1..9271a6a6ad8e04 100644
--- a/Library/Homebrew/sorbet/rbi/dsl/homebrew/env_config.rbi
+++ b/Library/Homebrew/sorbet/rbi/dsl/homebrew/env_config.rbi
@@ -190,6 +190,9 @@ module Homebrew::EnvConfig
     sig { returns(T::Boolean) }
     def no_auto_update?; end
 
+    sig { returns(T::Boolean) }
+    def no_autoremove?; end
+
     sig { returns(T::Boolean) }
     def no_bootsnap?; end