reinstall: move to submodule

Library/Homebrew/cmd/reinstall.rb

@@ -134,7 +134,7 @@ module Homebrew
             next
           end
           Migrator.migrate_if_needed(formula, force: args.force?)
-          Homebrew.reinstall_formula(
+          Homebrew::Reinstall.reinstall_formula(
             formula,
             flags:                      args.flags_only,
             installed_on_request:       args.named.present?,

Library/Homebrew/reinstall.rb

@@ -6,9 +6,8 @@ require "development_tools"
 require "messages"
 
 module Homebrew
-  module_function
-
-  def reinstall_formula(
+  module Reinstall
+    def self.reinstall_formula(
       formula,
       flags:,
       installed_on_request: false,
@@ -79,7 +78,7 @@ module Homebrew
       end
     end
 
-  def backup(keg)
+    def self.backup(keg)
       keg.unlink
       begin
         keg.rename backup_path(keg)
@@ -90,8 +89,9 @@ module Homebrew
         EOS
       end
     end
+    private_class_method :backup
 
-  def restore_backup(keg, keg_was_linked, verbose:)
+    def self.restore_backup(keg, keg_was_linked, verbose:)
       path = backup_path(keg)
 
       return unless path.directory?
@@ -101,8 +101,11 @@ module Homebrew
       path.rename keg
       keg.link(verbose:) if keg_was_linked
     end
+    private_class_method :restore_backup
 
-  def backup_path(path)
+    def self.backup_path(path)
       Pathname.new "#{path}.reinstall"
     end
+    private_class_method :backup_path
+  end
 end

Library/Homebrew/upgrade.rb

@@ -409,7 +409,7 @@ module Homebrew
       return if dry_run
 
       reinstallable_broken_dependents.each do |formula|
-        Homebrew.reinstall_formula(
+        Reinstall.reinstall_formula(
           formula,
           flags:,
           force_bottle:,