Rename Override module to SimulateSystem

Library/Homebrew/cask/cask.rb

@@ -255,8 +255,8 @@ module Cask
             # Big Sur is the first version of macOS that supports arm
             next if arch == :arm && MacOS::Version.from_symbol(os_name) < MacOS::Version.from_symbol(:big_sur)
 
-            Homebrew::Override.os = os_name
+            Homebrew::SimulateSystem.os = os_name
-            Homebrew::Override.arch = arch
+            Homebrew::SimulateSystem.arch = arch
 
             refresh
 
@@ -272,7 +272,7 @@ module Cask
         end
       end
 
-      Homebrew::Override.clear
+      Homebrew::SimulateSystem.clear
       refresh
 
       hash["variations"] = variations

Library/Homebrew/cask/dsl.rb

@@ -4,7 +4,6 @@
 require "locale"
 require "lazy_object"
 require "livecheck"
-require "override"
 
 require "cask/artifact"
 

Library/Homebrew/extend/on_system.rb

@@ -1,7 +1,7 @@
 # typed: false
 # frozen_string_literal: true
 
-require "override"
+require "simulate_system"
 
 module OnSystem
   extend T::Sig
@@ -13,9 +13,9 @@ module OnSystem
 
   sig { params(arch: Symbol).returns(T::Boolean) }
   def arch_condition_met?(arch)
-    raise ArgumentError, "Invalid arch condition: #{arch.inspect}" unless ARCH_OPTIONS.include?(arch)
+    raise ArgumentError, "Invalid arch condition: #{arch.inspect}" if ARCH_OPTIONS.exclude?(arch)
 
-    current_arch = Homebrew::Override.arch || Hardware::CPU.type
+    current_arch = Homebrew::SimulateSystem.arch || Hardware::CPU.type
     arch == current_arch
   end
 
@@ -27,12 +27,12 @@ module OnSystem
     end
 
     if BASE_OS_OPTIONS.include?(os_name)
-      if Homebrew::Override.none?
+      if Homebrew::SimulateSystem.none?
         return OS.linux? if os_name == :linux
         return OS.mac? if os_name == :macos
       end
 
-      return Homebrew::Override.send("#{os_name}?")
+      return Homebrew::SimulateSystem.send("#{os_name}?")
     end
 
     raise ArgumentError, "Invalid OS condition: #{os_name.inspect}" unless MacOS::Version::SYMBOLS.key?(os_name)
@@ -42,7 +42,7 @@ module OnSystem
     end
 
     base_os = MacOS::Version.from_symbol(os_name)
-    current_os = MacOS::Version.from_symbol(Homebrew::Override.os || MacOS.version.to_sym)
+    current_os = MacOS::Version.from_symbol(Homebrew::SimulateSystem.os || MacOS.version.to_sym)
 
     return current_os >= base_os if or_condition == :or_newer
     return current_os <= base_os if or_condition == :or_older

Library/Homebrew/simulate_system.rb

@@ -2,16 +2,13 @@
 # frozen_string_literal: true
 
 module Homebrew
-  # Helper module for overriding machine-specific methods.
+  # Helper module for simulating different system condfigurations.
   #
   # @api private
-  class Override
+  class SimulateSystem
     class << self
       extend T::Sig
 
-      ARCH_OPTIONS = [:intel, :arm64].freeze
-      OS_OPTIONS = [:macos, :linux].freeze
-
       attr_reader :os, :arch
 
       sig { params(new_os: Symbol).void }

Library/Homebrew/test/formula_spec.rb

@@ -1583,11 +1583,11 @@ describe Formula do
 
   describe "on_{os_version} blocks", :needs_macos do
     before do
-      Homebrew::Override.os = :monterey
+      Homebrew::SimulateSystem.os = :monterey
     end
 
     after do
-      Homebrew::Override.clear
+      Homebrew::SimulateSystem.clear
     end
 
     let(:f) do
@@ -1610,31 +1610,31 @@ describe Formula do
     end
 
     it "only calls code within `on_monterey`" do
-      Homebrew::Override.os = :monterey
+      Homebrew::SimulateSystem.os = :monterey
       f.brew { f.install }
       expect(f.test).to eq(1)
     end
 
     it "only calls code within `on_monterey :or_newer`" do
-      Homebrew::Override.os = :ventura
+      Homebrew::SimulateSystem.os = :ventura
       f.brew { f.install }
       expect(f.test).to eq(1)
     end
 
     it "only calls code within `on_big_sur`" do
-      Homebrew::Override.os = :big_sur
+      Homebrew::SimulateSystem.os = :big_sur
       f.brew { f.install }
       expect(f.test).to eq(2)
     end
 
     it "only calls code within `on_catalina`" do
-      Homebrew::Override.os = :catalina
+      Homebrew::SimulateSystem.os = :catalina
       f.brew { f.install }
       expect(f.test).to eq(3)
     end
 
     it "only calls code within `on_catalina :or_older`" do
-      Homebrew::Override.os = :mojave
+      Homebrew::SimulateSystem.os = :mojave
       f.brew { f.install }
       expect(f.test).to eq(3)
     end