Move include Kernel into .rbi files again and split up existing .rbi files.

Library/Homebrew/cli/args.rbi

@@ -0,0 +1,29 @@
+# typed: strict
+
+module Homebrew
+  module CLI
+    class Args < OpenStruct
+      def devel?; end
+
+      def HEAD?; end
+
+      def include_test?; end
+
+      def build_bottle?; end
+
+      def build_universal?; end
+
+      def build_from_source?; end
+
+      def named_args; end
+
+      def force_bottle?; end
+
+      def debug?; end
+
+      def quiet?; end
+
+      def verbose?; end
+    end
+  end
+end

Library/Homebrew/compat/cli/parser.rbi

@@ -0,0 +1,15 @@
+# typed: strict
+
+module Homebrew
+  module CLI
+    class Parser
+      module Compat
+        include Kernel
+
+        module DeprecatedArgs
+          include Kernel
+        end
+      end
+    end
+  end
+end

Library/Homebrew/compat/dependencies_helpers.rbi

@@ -0,0 +1,9 @@
+# typed: strict
+
+module DependenciesHelpers
+  module Compat
+    include Kernel
+
+    def args_includes_ignores(args); end
+  end
+end

Library/Homebrew/compat/extend/nil.rbi

@@ -0,0 +1,7 @@
+# typed: strict
+
+class NilClass
+  module Compat
+    include Kernel
+  end
+end

Library/Homebrew/compat/extend/string.rbi

@@ -0,0 +1,7 @@
+# typed: strict
+
+class String
+  module Compat
+    include Kernel
+  end
+end

Library/Homebrew/compat/formula.rbi

@@ -0,0 +1,11 @@
+# typed: strict
+
+class Formula
+  module Compat
+    include Kernel
+
+    def any_installed_keg; end
+
+    def latest_installed_prefix; end
+  end
+end

Library/Homebrew/compat/os/mac.rbi

@@ -0,0 +1,11 @@
+# typed: strict
+
+module OS
+  module Mac
+    class << self
+      module Compat
+        include Kernel
+      end
+    end
+  end
+end

Library/Homebrew/dependable.rbi

@@ -0,0 +1,5 @@
+# typed: strict
+
+module Dependable
+  def tags; end
+end

Library/Homebrew/dependencies_helpers.rbi

@@ -0,0 +1,5 @@
+# typed: strict
+
+module DependenciesHelpers
+  include Kernel
+end

Library/Homebrew/extend/os/linux/system_config.rb

@@ -3,8 +3,11 @@
 
 require "formula"
 require "os/linux/glibc"
+require "system_command"
 
 module SystemConfig
+  include SystemCommand::Mixin
+
   HOST_RUBY_PATH = "/usr/bin/ruby"
 
   class << self

Library/Homebrew/extend/os/mac/system_config.rb

@@ -1,8 +1,12 @@
 # typed: true
 # frozen_string_literal: true
 
+require "system_command"
+
 module SystemConfig
   class << self
+    include SystemCommand::Mixin
+
     undef describe_java, describe_homebrew_ruby
 
     def describe_java

Library/Homebrew/global.rbi

@@ -0,0 +1,5 @@
+# typed: strict
+
+module Homebrew
+  include Kernel
+end

Library/Homebrew/help.rbi

@@ -0,0 +1,7 @@
+# typed: strict
+
+module Homebrew
+  module Help
+    include Kernel
+  end
+end

Library/Homebrew/install.rbi

@@ -0,0 +1,7 @@
+# typed: strict
+
+module Homebrew
+  module Install
+    include Kernel
+  end
+end

Library/Homebrew/language/perl.rbi

@@ -0,0 +1,9 @@
+# typed: strict
+
+module Language
+  module Perl
+    module Shebang
+      include Kernel
+    end
+  end
+end

Library/Homebrew/os/linux.rbi

@@ -0,0 +1,7 @@
+# typed: strict
+
+module OS
+  module Linux
+    include ::Kernel
+  end
+end

Library/Homebrew/os/mac.rbi

@@ -0,0 +1,7 @@
+# typed: strict
+
+module OS
+  module Mac
+    include Kernel
+  end
+end

Library/Homebrew/sorbet/rbi/cli.rbi

@@ -1,37 +0,0 @@
-# typed: strict
-
-module Homebrew::CLI
-  class Args < OpenStruct
-    def devel?; end
-
-    def HEAD?; end
-
-    def include_test?; end
-
-    def build_bottle?; end
-
-    def build_universal?; end
-
-    def build_from_source?; end
-
-    def named_args; end
-
-    def force_bottle?; end
-
-    def debug?; end
-
-    def quiet?; end
-
-    def verbose?; end
-  end
-
-
-  class Parser
-    module Compat
-      include Kernel
-      module DeprecatedArgs
-        include Kernel
-      end
-    end
-  end
-end

Library/Homebrew/sorbet/rbi/homebrew.rbi

@@ -1,65 +0,0 @@
-# typed: strict
-
-module Homebrew
-  include Kernel
-end
-
-module Homebrew::Help
-  include Kernel
-end
-
-module Homebrew::Fetch
-  def args; end
-end
-
-module Homebrew::Install
-  include Kernel
-end
-
-module Language::Perl::Shebang
-  include Kernel
-end
-
-module Dependable
-  def tags; end
-end
-
-module DependenciesHelpers
-  include Kernel
-
-  module Compat
-    include Kernel
-
-    def args_includes_ignores(args); end
-  end
-end
-
-class Formula
-  module Compat
-    include Kernel
-
-    def latest_version_installed?; end
-
-    def active_spec; end
-
-    def any_installed_keg; end
-
-    def latest_installed_prefix; end
-
-    def patches; end
-  end
-end
-
-class NilClass
-  module Compat
-    include Kernel
-  end
-end
-
-class String
-  module Compat
-    include Kernel
-
-    def chomp; end
-  end
-end

Library/Homebrew/sorbet/rbi/os.rbi

@@ -1,22 +0,0 @@
-# typed: true
-
-module OS
-  module Linux
-    include Kernel
-
-    def which(cmd, path = ENV["PATH"])
-    end
-  end
-
-  module Mac
-    include Kernel
-  end
-end
-
-module OS::Mac
-  class << self
-    module Compat
-      include Kernel
-    end
-  end
-end

Library/Homebrew/sorbet/tapioca/require.rb

@@ -1,4 +1,4 @@
-# typed: false
+# typed: strict
 # frozen_string_literal: true
 
 # Add your extra requires here

Library/Homebrew/system_command.rb

@@ -7,13 +7,16 @@ require "plist"
 require "shellwords"
 
 require "extend/io"
+require "extend/predicable"
 require "extend/hash_validator"
 using HashValidator
 
-# Make `system_command` available everywhere.
+# Class for running sub-processes and capturing their output and exit status.
 #
 # @api private
-module Kernel
+class SystemCommand
+  # Helper functions for calling `SystemCommand.run`.
+  module Mixin
     def system_command(*args)
       SystemCommand.run(*args)
     end
@@ -23,10 +26,6 @@ module Kernel
     end
   end
 
-# Class for running sub-processes and capturing their output and exit status.
-#
-# @api private
-class SystemCommand
   include Context
   extend Predicable
 
@@ -248,3 +247,7 @@ class SystemCommand
     private :warn_plist_garbage
   end
 end
+
+# Make `system_command` available everywhere.
+# FIXME: Include this explicitly only where it is needed.
+include SystemCommand::Mixin # rubocop:disable Style/MixinUsage

Library/Homebrew/system_config.rb

@@ -5,12 +5,15 @@ require "hardware"
 require "software_spec"
 require "development_tools"
 require "extend/ENV"
+require "system_command"
 
 # Helper module for querying information about the system configuration.
 #
 # @api private
 module SystemConfig
   class << self
+    include SystemCommand::Mixin
+
     def clang
       @clang ||= if DevelopmentTools.installed?
         DevelopmentTools.clang_version

Library/Homebrew/unpack_strategy.rb

@@ -1,10 +1,14 @@
 # typed: false
 # frozen_string_literal: true
 
+require "system_command"
+
 # Module containing all available strategies for unpacking archives.
 #
 # @api private
 module UnpackStrategy
+  include SystemCommand::Mixin
+
   # Helper module for identifying the file type.
   module Magic
     # Length of the longest regex (currently Tar).

Library/Homebrew/unpack_strategy/fossil.rb

@@ -1,10 +1,13 @@
 # typed: true
 # frozen_string_literal: true
 
+require "system_command"
+
 module UnpackStrategy
   # Strategy for unpacking Fossil repositories.
   class Fossil
     include UnpackStrategy
+    extend SystemCommand::Mixin
 
     using Magic
 

Library/Homebrew/unpack_strategy/tar.rb

@@ -1,10 +1,13 @@
 # typed: true
 # frozen_string_literal: true
 
+require "system_command"
+
 module UnpackStrategy
   # Strategy for unpacking tar archives.
   class Tar
     include UnpackStrategy
+    extend SystemCommand::Mixin
 
     using Magic
 

Library/Homebrew/utils/inreplace.rb

@@ -8,7 +8,6 @@ module Utils
   #
   # @api private
   module Inreplace
-    include Kernel
     extend T::Sig
 
     # Error during replacement.

Library/Homebrew/utils/inreplace.rbi

@@ -0,0 +1,7 @@
+# typed: strict
+
+module Utils
+  module Inreplace
+    include Kernel
+  end
+end

Library/Homebrew/utils/link.rb

@@ -6,8 +6,6 @@ module Utils
   #
   # @api private
   module Link
-    include Kernel
-
     module_function
 
     def link_src_dst_dirs(src_dir, dst_dir, command, link_dir: false)

Library/Homebrew/utils/link.rbi

@@ -0,0 +1,7 @@
+# typed: strict
+
+module Utils
+  module Link
+    include Kernel
+  end
+end

Library/Homebrew/utils/shebang.rb

@@ -6,8 +6,6 @@ module Utils
   #
   # @api private
   module Shebang
-    include Kernel
-
     module_function
 
     # Specification on how to rewrite a given shebang.

Library/Homebrew/utils/shebang.rbi

@@ -0,0 +1,7 @@
+# typed: strict
+
+module Utils
+  module Shebang
+    include Kernel
+  end
+end

Library/Homebrew/utils/shell.rb

@@ -3,7 +3,6 @@
 
 module Utils
   module Shell
-    include Kernel
     extend T::Sig
 
     module_function

Library/Homebrew/utils/shell.rbi

@@ -0,0 +1,7 @@
+# typed: strict
+
+module Utils
+  module Shell
+    include Kernel
+  end
+end

Library/Homebrew/utils/svn.rb

@@ -8,10 +8,10 @@ module Utils
   #
   # @api private
   module Svn
-    include Kernel
+    class << self
       extend T::Sig
 
-    module_function
+      include SystemCommand::Mixin
 
       sig { returns(T::Boolean) }
       def available?
@@ -30,10 +30,9 @@ module Utils
       def remote_exists?(url)
         return true unless available?
 
-      # OK to unconditionally trust here because we're just checking if
-      # a URL exists.
-      quiet_system "svn", "ls", url, "--depth", "empty",
-                   "--non-interactive", "--trust-server-cert"
+        # OK to unconditionally trust here because we're just checking if a URL exists.
+        system_command("svn", args: ["ls", url, "--depth", "empty",
+                                     "--non-interactive", "--trust-server-cert"], print_stderr: false).success?
       end
 
       def clear_version_cache
@@ -41,3 +40,4 @@ module Utils
       end
     end
   end
+end

Library/Homebrew/utils/tar.rb

@@ -6,10 +6,7 @@ module Utils
   #
   # @api private
   module Tar
-    include Kernel
-
-    module_function
-
+    class << self
       TAR_FILE_EXTENSIONS = %w[.tar .tb2 .tbz .tbz2 .tgz .tlz .txz .tZ].freeze
 
       def available?
@@ -39,3 +36,4 @@ module Utils
       end
     end
   end
+end

Library/Homebrew/utils/tty.rb

@@ -5,14 +5,12 @@
 #
 # @api private
 module Tty
-  include Kernel
-  extend T::Sig
-
   @stream = $stdout
 
-  module_function
+  class << self
+    extend T::Sig
 
-  sig { params(stream: IO, _block: T.proc.params(arg0: IO).void).void }
+    sig { params(stream: T.any(IO, StringIO), _block: T.proc.params(arg0: T.any(IO, StringIO)).void).void }
     def with(stream, &_block)
       previous_stream = @stream
       @stream = stream
@@ -72,13 +70,6 @@ module Tty
 
     CODES = COLOR_CODES.merge(STYLE_CODES).freeze
 
-  sig { params(code: Integer).returns(T.self_type) }
-  def append_to_escape_sequence(code)
-    @escape_sequence ||= []
-    @escape_sequence << code
-    self
-  end
-
     sig { returns(String) }
     def current_escape_sequence
       return "" if @escape_sequence.nil?
@@ -92,13 +83,15 @@ module Tty
     end
 
     CODES.each do |name, code|
-    define_singleton_method(name) do
-      append_to_escape_sequence(code)
+      define_method(name) do
+        @escape_sequence ||= []
+        @escape_sequence << code
+        self
       end
     end
 
     SPECIAL_CODES.each do |name, code|
-    define_singleton_method(name) do
+      define_method(name) do
         if @stream.tty?
           "\033[#{code}"
         else
@@ -124,3 +117,4 @@ module Tty
       @stream.tty?
     end
 end
+end

Library/Homebrew/utils/user.rb

@@ -10,9 +10,10 @@ require "system_command"
 #
 # @api private
 class User < SimpleDelegator
-  include Kernel
   extend T::Sig
 
+  include SystemCommand::Mixin
+
   # Return whether the user has an active GUI session.
   sig { returns(T::Boolean) }
   def gui?