Add custom implementations for brew_wrapper and no_force_brew_wrapper?

Library/Homebrew/env_config.rb

@@ -89,8 +89,8 @@ module Homebrew
       },
       HOMEBREW_BREW_WRAPPER:                     {
         description: "If set, use wrapper to call `brew` rather than auto-detecting it.",
-        # TODO: uncomment line below and remove the line above when odeprecated.
         # We use backticks to render "Deprecated:" in bold.
+        # TODO: uncomment line below and remove the line above when odeprecated.
         # description: "`Deprecated:` If set, use wrapper to call `brew` rather than auto-detecting it.",
       },
       HOMEBREW_BROWSER:                          {
@@ -398,8 +398,8 @@ module Homebrew
       },
       HOMEBREW_NO_FORCE_BREW_WRAPPER:            {
         description: "If set, disables `$HOMEBREW_FORCE_BREW_WRAPPER` behaviour, even if set.",
-        # TODO: uncomment line below and remove the line above when odeprecated.
         # We use backticks to render "Deprecated:" in bold.
+        # TODO: uncomment line below and remove the line above when odeprecated.
         # description: "`Deprecated:` If set, disables `$HOMEBREW_FORCE_BREW_WRAPPER` behaviour, even if set.",
         boolean:     true,
       },
@@ -556,10 +556,23 @@ module Homebrew
     end
 
     CUSTOM_IMPLEMENTATIONS = T.let(Set.new([
+      :HOMEBREW_BREW_WRAPPER,
       :HOMEBREW_MAKE_JOBS,
+      :HOMEBREW_NO_FORCE_BREW_WRAPPER,
       :HOMEBREW_CASK_OPTS,
     ]).freeze, T::Set[Symbol])
 
+    FALSY_VALUES = T.let(%w[false no off nil 0].freeze, T::Array[String])
+
+    sig { params(env: String, env_value: T.nilable(String)).void }
+    def check_falsy_values(env, env_value)
+      return unless FALSY_VALUES.include?(env_value&.downcase)
+
+      odisabled "#{env}=#{env_value}", <<~EOS.chomp
+        #{env}=1 to enable and #{env}= (an empty value) to disable
+      EOS
+    end
+
     ENVS.each do |env, hash|
       # Needs a custom implementation.
       next if CUSTOM_IMPLEMENTATIONS.include?(env)
@@ -571,16 +584,10 @@ module Homebrew
         define_method(method_name) do
           env_value = ENV.fetch(env, nil)
 
-          # odeprecated "`HOMEBREW_NO_FORCE_BREW_WRAPPER`" if env == "HOMEBREW_NO_FORCE_BREW_WRAPPER"
+          check_falsy_values(env, env_value)
-          falsy_values = %w[false no off nil 0]
-          if falsy_values.include?(env_value&.downcase)
-            odisabled "#{env}=#{env_value}", <<~EOS.chomp
-              #{env}=1 to enable and #{env}= (an empty value) to disable
-            EOS
-          end
 
-          # TODO: Uncomment the remaining part of the line below after the deprecation/disable cycle.
+          # TODO: Uncomment the remaining part of the line below after `check_falsy_values` has been removed.
-          env_value.present? # && !falsy_values.include(env_value.downcase)
+          env_value.present? # && !FALSY_VALUES.include?(env_value.downcase)
         end
       elsif hash[:default].present?
         define_method(method_name) do
@@ -588,14 +595,30 @@ module Homebrew
         end
       else
         define_method(method_name) do
-          # odeprecated "`HOMEBREW_BREW_WRAPPER`" if env == "HOMEBREW_BREW_WRAPPER"
-
           ENV[env].presence
         end
       end
     end
 
     # Needs a custom implementation.
+    sig { returns(T::Boolean) }
+    def no_force_brew_wrapper?
+      # odeprecated "`HOMEBREW_NO_FORCE_BREW_WRAPPER`"
+      env = "HOMEBREW_NO_FORCE_BREW_WRAPPER"
+      env_value = ENV.fetch(env, nil)
+
+      check_falsy_values(env, env_value)
+
+      # TODO: Uncomment the remaining part of the line below after `check_falsy_values` has been removed.
+      env_value.present? # && !FALSY_VALUES.include?(env_value.downcase)
+    end
+
+    sig { returns(T.nilable(String)) }
+    def brew_wrapper
+      # odeprecated "`HOMEBREW_BREW_WRAPPER`"
+      ENV["HOMEBREW_BREW_WRAPPER"].presence
+    end
+
     sig { returns(String) }
     def make_jobs
       jobs = ENV["HOMEBREW_MAKE_JOBS"].to_i