Fix visibility modifiers

Library/Homebrew/install.rb

@@ -56,43 +56,6 @@ def check_prefix
         end
       end
 
-      def check_cpu
-        return unless Hardware::CPU.ppc?
-
-        odie <<~EOS
-          Sorry, Homebrew does not support your computer's CPU architecture!
-          For PowerPC Mac (PPC32/PPC64BE) support, see:
-            #{Formatter.url("https://github.com/mistydemeo/tigerbrew")}
-        EOS
-      end
-      private_class_method :check_cpu
-
-      def attempt_directory_creation
-        Keg::MUST_EXIST_DIRECTORIES.each do |dir|
-          FileUtils.mkdir_p(dir) unless dir.exist?
-
-          # Create these files to ensure that these directories aren't removed
-          # by the Catalina installer.
-          # (https://github.com/Homebrew/brew/issues/6263)
-          keep_file = dir/".keepme"
-          FileUtils.touch(keep_file) unless keep_file.exist?
-        rescue
-          nil
-        end
-      end
-      private_class_method :attempt_directory_creation
-
-      def check_cc_argv(cc)
-        return unless cc
-
-        @checks ||= Diagnostic::Checks.new
-        opoo <<~EOS
-          You passed `--cc=#{cc}`.
-          #{@checks.please_create_pull_requests}
-        EOS
-      end
-      private_class_method :check_cc_argv
-
       def install_formula?(
         formula,
         head: false,
@@ -360,6 +323,42 @@ def print_dry_run_dependencies(formula, dependencies, &block)
         puts formula_names.join(" ")
       end
     end
+
+    private
+
+    def check_cc_argv(cc)
+      return unless cc
+
+      @checks ||= Diagnostic::Checks.new
+      opoo <<~EOS
+        You passed `--cc=#{cc}`.
+        #{@checks.please_create_pull_requests}
+      EOS
+    end
+
+    def attempt_directory_creation
+      Keg::MUST_EXIST_DIRECTORIES.each do |dir|
+        FileUtils.mkdir_p(dir) unless dir.exist?
+
+        # Create these files to ensure that these directories aren't removed
+        # by the Catalina installer.
+        # (https://github.com/Homebrew/brew/issues/6263)
+        keep_file = dir/".keepme"
+        FileUtils.touch(keep_file) unless keep_file.exist?
+      rescue
+        nil
+      end
+    end
+
+    def check_cpu
+      return unless Hardware::CPU.ppc?
+
+      odie <<~EOS
+        Sorry, Homebrew does not support your computer's CPU architecture!
+        For PowerPC Mac (PPC32/PPC64BE) support, see:
+          #{Formatter.url("https://github.com/mistydemeo/tigerbrew")}
+      EOS
+    end
   end
 end