Rename formula_support to keg_only reason, refactor slightly

Library/Homebrew/extend/os/formula_support.rb

@@ -1,4 +0,0 @@
-# typed: strict
-# frozen_string_literal: true
-
-require "extend/os/mac/formula_support" if OS.mac?

Library/Homebrew/extend/os/keg_only_reason.rb

@@ -0,0 +1,4 @@
+# typed: strict
+# frozen_string_literal: true
+
+require "extend/os/mac/keg_only_reason" if OS.mac?

Library/Homebrew/formula.rb

@@ -4,7 +4,7 @@
 require "autobump_constants"
 require "cache_store"
 require "did_you_mean"
-require "formula_support"
+require "keg_only_reason"
 require "lock_file"
 require "formula_pin"
 require "hardware"
@@ -88,6 +88,9 @@ class Formula
 
   abstract!
 
+  # Used to track formulae that cannot be installed at the same time.
+  FormulaConflict = Struct.new(:name, :reason)
+
   SUPPORTED_NETWORK_ACCESS_PHASES = [:build, :test, :postinstall].freeze
   private_constant :SUPPORTED_NETWORK_ACCESS_PHASES
   DEFAULT_NETWORK_ACCESS_ALLOWED = true

Library/Homebrew/keg_only_reason.rb

@@ -1,9 +1,6 @@
 # typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
-# Used to track formulae that cannot be installed at the same time.
-FormulaConflict = Struct.new(:name, :reason)
-
 # Used to annotate formulae that duplicate macOS-provided software
 # or cause conflicts when linked in.
 class KegOnlyReason
@@ -33,7 +30,7 @@ class KegOnlyReason
   sig { returns(T::Boolean) }
   def applicable?
     # macOS reasons aren't applicable on other OSs
-    # (see extend/os/mac/formula_support for override on macOS)
+    # (see extend/os/mac/keg_only_reason for override on macOS)
     !by_macos?
   end
 
@@ -74,4 +71,4 @@ class KegOnlyReason
   end
 end
 
-require "extend/os/formula_support"
+require "extend/os/keg_only_reason"

Library/Homebrew/test/bundle/commands/exec_spec.rb

@@ -137,7 +137,7 @@ RSpec.describe Homebrew::Bundle::Commands::Exec do
           plist_name:               "homebrew.mxcl.nginx",
           service_name:             "nginx",
           versioned_formulae_names: [],
-          conflicts:                [instance_double(FormulaConflict, name: "httpd")],
+          conflicts:                [instance_double(Formula::FormulaConflict, name: "httpd")],
           keg_only?:                false,
         )
       end

Library/Homebrew/test/exceptions_spec.rb

@@ -176,7 +176,7 @@ RSpec.describe "Exception" do
     subject(:error) { described_class.new(formula, [conflict]) }
 
     let(:formula) { instance_double(Formula, full_name: "foo/qux") }
-    let(:conflict) { instance_double(FormulaConflict, name: "bar", reason: "I decided to") }
+    let(:conflict) { instance_double(Formula::FormulaConflict, name: "bar", reason: "I decided to") }
 
     it(:to_s) { expect(error.to_s).to match(/Please `brew unlink bar` before continuing\./) }
   end

Library/Homebrew/test/keg_only_reason_spec.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require "formula_support"
+require "keg_only_reason"
 
 RSpec.describe KegOnlyReason do
   describe "#to_s" do