diff --git a/Library/Homebrew/bottles.rb b/Library/Homebrew/bottles.rb
deleted file mode 100644
index b18fde4770..0000000000
--- a/Library/Homebrew/bottles.rb
+++ /dev/null
@@ -1,141 +0,0 @@
-require "tab"
-require "extend/ARGV"
-
-def built_as_bottle?(f)
-  return false unless f.installed?
-  tab = Tab.for_keg(f.installed_prefix)
-  tab.built_as_bottle
-end
-
-def bottle_file_outdated?(f, file)
-  filename = file.basename.to_s
-  return unless f.bottle && filename.match(Pathname::BOTTLE_EXTNAME_RX)
-
-  bottle_ext = filename[bottle_native_regex, 1]
-  bottle_url_ext = f.bottle.url[bottle_native_regex, 1]
-
-  bottle_ext && bottle_url_ext && bottle_ext != bottle_url_ext
-end
-
-def bottle_native_regex
-  /(\.#{bottle_tag}\.bottle\.(\d+\.)?tar\.gz)$/o
-end
-
-def bottle_tag
-  if MacOS.version >= :lion
-    MacOS.cat
-  elsif MacOS.version == :snow_leopard
-    Hardware::CPU.is_64_bit? ? :snow_leopard : :snow_leopard_32
-  else
-    # Return, e.g., :tiger_g3, :leopard_g5_64, :leopard_64 (which is Intel)
-    if Hardware::CPU.type == :ppc
-      tag = "#{MacOS.cat}_#{Hardware::CPU.family}".to_sym
-    else
-      tag = MacOS.cat
-    end
-    MacOS.prefer_64_bit? ? "#{tag}_64".to_sym : tag
-  end
-end
-
-def bottle_receipt_path(bottle_file)
-  Utils.popen_read("/usr/bin/tar", "-tzf", bottle_file, "*/*/INSTALL_RECEIPT.json").chomp
-end
-
-def bottle_resolve_formula_names(bottle_file)
-  receipt_file_path = bottle_receipt_path bottle_file
-  receipt_file = Utils.popen_read("tar", "-xOzf", bottle_file, receipt_file_path)
-  name = receipt_file_path.split("/").first
-  tap = Tab.from_file_content(receipt_file, "#{bottle_file}/#{receipt_file_path}").tap
-
-  if tap.nil? || tap.core_tap?
-    full_name = name
-  else
-    full_name = "#{tap}/#{name}"
-  end
-
-  [name, full_name]
-end
-
-def bottle_resolve_version(bottle_file)
-  PkgVersion.parse bottle_receipt_path(bottle_file).split("/")[1]
-end
-
-class Bintray
-  def self.package(formula_name)
-    formula_name.to_s.tr("+", "x")
-  end
-
-  def self.repository(tap = nil)
-    if tap.nil? || tap.core_tap?
-      "bottles"
-    else
-      "bottles-#{tap.repo}"
-    end
-  end
-end
-
-class BottleCollector
-  def initialize
-    @checksums = {}
-  end
-
-  def fetch_checksum_for(tag)
-    tag = find_matching_tag(tag)
-    return self[tag], tag if tag
-  end
-
-  def keys
-    @checksums.keys
-  end
-
-  def [](key)
-    @checksums[key]
-  end
-
-  def []=(key, value)
-    @checksums[key] = value
-  end
-
-  def key?(key)
-    @checksums.key?(key)
-  end
-
-  private
-
-  def find_matching_tag(tag)
-    if key?(tag)
-      tag
-    else
-      find_altivec_tag(tag) || find_or_later_tag(tag)
-    end
-  end
-
-  # This allows generic Altivec PPC bottles to be supported in some
-  # formulae, while also allowing specific bottles in others; e.g.,
-  # sometimes a formula has just :tiger_altivec, other times it has
-  # :tiger_g4, :tiger_g5, etc.
-  def find_altivec_tag(tag)
-    if tag.to_s =~ /(\w+)_(g4|g4e|g5)$/
-      altivec_tag = "#{$1}_altivec".to_sym
-      altivec_tag if key?(altivec_tag)
-    end
-  end
-
-  # Allows a bottle tag to specify a specific OS or later,
-  # so the same bottle can target multiple OSs.
-  # Not used in core, used in taps.
-  def find_or_later_tag(tag)
-    begin
-      tag_version = MacOS::Version.from_symbol(tag)
-    rescue ArgumentError
-      return
-    end
-
-    keys.find do |key|
-      if key.to_s.end_with?("_or_later")
-        later_tag = key.to_s[/(\w+)_or_later$/, 1].to_sym
-        MacOS::Version.from_symbol(later_tag) <= tag_version
-      end
-    end
-  end
-end
diff --git a/Library/Homebrew/cleanup.rb b/Library/Homebrew/cleanup.rb
index 2dba60bb99..88d276bf4d 100644
--- a/Library/Homebrew/cleanup.rb
+++ b/Library/Homebrew/cleanup.rb
@@ -1,4 +1,4 @@
-require "bottles"
+require "utils/bottles"
 require "formula"
 require "thread"
 
@@ -67,7 +67,7 @@ module Homebrew
         file = path
 
         if Pathname::BOTTLE_EXTNAME_RX === file.to_s
-          version = bottle_resolve_version(file) rescue file.version
+          version = Utils::Bottles.resolve_version(file) rescue file.version
         else
           version = file.version
         end
diff --git a/Library/Homebrew/cmd/bottle.rb b/Library/Homebrew/cmd/bottle.rb
index 59e122f415..2f8f7f6159 100644
--- a/Library/Homebrew/cmd/bottle.rb
+++ b/Library/Homebrew/cmd/bottle.rb
@@ -1,5 +1,5 @@
 require "formula"
-require "bottles"
+require "utils/bottles"
 require "tab"
 require "keg"
 require "formula_versions"
@@ -155,7 +155,7 @@ module Homebrew
       return
     end
 
-    unless built_as_bottle? f
+    unless Utils::Bottles::built_as? f
       return ofail "Formula not installed with '--build-bottle': #{f.full_name}"
     end
 
@@ -175,7 +175,7 @@ module Homebrew
       bottle_revision = bottle_revisions.any? ? bottle_revisions.max.to_i + 1 : 0
     end
 
-    filename = Bottle::Filename.create(f, bottle_tag, bottle_revision)
+    filename = Bottle::Filename.create(f, Utils::Bottles.tag, bottle_revision)
     bottle_path = Pathname.pwd/filename
 
     tar_filename = filename.to_s.sub(/.gz$/, "")
@@ -281,7 +281,7 @@ module Homebrew
       bottle.prefix prefix
     end
     bottle.revision bottle_revision
-    bottle.sha256 bottle_path.sha256 => bottle_tag
+    bottle.sha256 bottle_path.sha256 => Utils::Bottles.tag
 
     old_spec = f.bottle_specification
     if ARGV.include?("--keep-old") && !old_spec.checksums.empty?
diff --git a/Library/Homebrew/cmd/pull.rb b/Library/Homebrew/cmd/pull.rb
index 6f7136cf8f..654461edb9 100644
--- a/Library/Homebrew/cmd/pull.rb
+++ b/Library/Homebrew/cmd/pull.rb
@@ -32,7 +32,6 @@ require "utils/json"
 require "formula"
 require "formulary"
 require "tap"
-require "bottles"
 require "version"
 require "pkg_version"
 
@@ -402,8 +401,8 @@ module Homebrew
 
   # Publishes the current bottle files for a given formula to Bintray
   def publish_bottle_file_on_bintray(f, creds)
-    repo = Bintray.repository(f.tap)
-    package = Bintray.package(f.name)
+    repo = Utils::Bottles::Bintray.repository(f.tap)
+    package = Utils::Bottles::Bintray.package(f.name)
     info = FormulaInfoFromJson.lookup(f.name)
     if info.nil?
       raise "Failed publishing bottle: failed reading formula info for #{f.full_name}"
diff --git a/Library/Homebrew/cmd/test-bot.rb b/Library/Homebrew/cmd/test-bot.rb
index 13b5bd55cb..a01467036b 100644
--- a/Library/Homebrew/cmd/test-bot.rb
+++ b/Library/Homebrew/cmd/test-bot.rb
@@ -576,7 +576,7 @@ module Homebrew
           bottle_step = steps.last
           if bottle_step.passed? && bottle_step.has_output?
             bottle_filename =
-              bottle_step.output.gsub(/.*(\.\/\S+#{bottle_native_regex}).*/m, '\1')
+              bottle_step.output.gsub(/.*(\.\/\S+#{Utils::Bottles::native_regex}).*/m, '\1')
             bottle_rb_filename = bottle_filename.gsub(/\.(\d+\.)?tar\.gz$/, ".rb")
             bottle_merge_args = ["--merge", "--write", "--no-commit", bottle_rb_filename]
             bottle_merge_args << "--keep-old" if ARGV.include? "--keep-old"
@@ -824,15 +824,15 @@ module Homebrew
     remote = "git@github.com:BrewTestBot/homebrew-#{tap.repo}.git"
     tag = pr ? "pr-#{pr}" : "testing-#{number}"
 
-    bintray_repo = Bintray.repository(tap)
+    bintray_repo = Utils::Bottles::Bintray.repository(tap)
     bintray_repo_url = "https://api.bintray.com/packages/homebrew/#{bintray_repo}"
     formula_packaged = {}
 
     Dir.glob("*.bottle*.tar.gz") do |filename|
-      formula_name, canonical_formula_name = bottle_resolve_formula_names filename
+      formula_name, canonical_formula_name = Utils::Bottles.resolve_formula_names filename
       formula = Formulary.factory canonical_formula_name
       version = formula.pkg_version
-      bintray_package = Bintray.package formula_name
+      bintray_package = Utils::Bottles::Bintray.package formula_name
 
       if system "curl", "-I", "--silent", "--fail", "--output", "/dev/null",
                 "#{BottleSpecification::DEFAULT_DOMAIN}/#{bintray_repo}/#{filename}"
diff --git a/Library/Homebrew/extend/os/bottles.rb b/Library/Homebrew/extend/os/bottles.rb
new file mode 100644
index 0000000000..aff9300de1
--- /dev/null
+++ b/Library/Homebrew/extend/os/bottles.rb
@@ -0,0 +1,5 @@
+require "utils/bottles"
+
+if OS.mac?
+  require "extend/os/mac/utils/bottles"
+end
diff --git a/Library/Homebrew/extend/os/mac/utils/bottles.rb b/Library/Homebrew/extend/os/mac/utils/bottles.rb
new file mode 100644
index 0000000000..6b83ad6c4c
--- /dev/null
+++ b/Library/Homebrew/extend/os/mac/utils/bottles.rb
@@ -0,0 +1,59 @@
+module Utils
+  class Bottles
+    class << self
+      def tag
+        if MacOS.version >= :lion
+          MacOS.cat
+        elsif MacOS.version == :snow_leopard
+          Hardware::CPU.is_64_bit? ? :snow_leopard : :snow_leopard_32
+        else
+          # Return, e.g., :tiger_g3, :leopard_g5_64, :leopard_64 (which is Intel)
+          if Hardware::CPU.type == :ppc
+            tag = "#{MacOS.cat}_#{Hardware::CPU.family}".to_sym
+          else
+            tag = MacOS.cat
+          end
+          MacOS.prefer_64_bit? ? "#{tag}_64".to_sym : tag
+        end
+      end
+    end
+
+    class Collector
+      private
+
+      alias_method :original_find_matching_tag, :find_matching_tag
+      def find_matching_tag(tag)
+        original_find_matching_tag(tag) || find_altivec_tag(tag) || find_or_later_tag(tag)
+      end
+
+      # This allows generic Altivec PPC bottles to be supported in some
+      # formulae, while also allowing specific bottles in others; e.g.,
+      # sometimes a formula has just :tiger_altivec, other times it has
+      # :tiger_g4, :tiger_g5, etc.
+      def find_altivec_tag(tag)
+        if tag.to_s =~ /(\w+)_(g4|g4e|g5)$/
+          altivec_tag = "#{$1}_altivec".to_sym
+          altivec_tag if key?(altivec_tag)
+        end
+      end
+
+      # Allows a bottle tag to specify a specific OS or later,
+      # so the same bottle can target multiple OSs.
+      # Not used in core, used in taps.
+      def find_or_later_tag(tag)
+        begin
+          tag_version = MacOS::Version.from_symbol(tag)
+        rescue ArgumentError
+          return
+        end
+
+        keys.find do |key|
+          if key.to_s.end_with?("_or_later")
+            later_tag = key.to_s[/(\w+)_or_later$/, 1].to_sym
+            MacOS::Version.from_symbol(later_tag) <= tag_version
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index a25a78f444..b8889225e0 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -2,7 +2,7 @@ require "formula_support"
 require "formula_lock"
 require "formula_pin"
 require "hardware"
-require "bottles"
+require "utils/bottles"
 require "build_environment"
 require "build_options"
 require "formulary"
diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index 4b8dcf202e..00678935d9 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -3,7 +3,7 @@ require "exceptions"
 require "formula"
 require "keg"
 require "tab"
-require "bottles"
+require "utils/bottles"
 require "caveats"
 require "cleaner"
 require "formula_cellar_checks"
diff --git a/Library/Homebrew/formulary.rb b/Library/Homebrew/formulary.rb
index 28e79c68f8..1d31995c11 100644
--- a/Library/Homebrew/formulary.rb
+++ b/Library/Homebrew/formulary.rb
@@ -92,7 +92,7 @@ class Formulary
   class BottleLoader < FormulaLoader
     def initialize(bottle_name)
       @bottle_filename = Pathname(bottle_name).realpath
-      name, full_name = bottle_resolve_formula_names @bottle_filename
+      name, full_name = Utils::Bottles.resolve_formula_names @bottle_filename
       super name, Formulary.path(full_name)
     end
 
@@ -100,7 +100,7 @@ class Formulary
       formula = super
       formula.local_bottle_path = @bottle_filename
       formula_version = formula.pkg_version
-      bottle_version =  bottle_resolve_version(@bottle_filename)
+      bottle_version =  Utils::Bottles.resolve_version(@bottle_filename)
       unless formula_version == bottle_version
         raise BottleVersionMismatchError.new(@bottle_filename, bottle_version, formula, formula_version)
       end
diff --git a/Library/Homebrew/software_spec.rb b/Library/Homebrew/software_spec.rb
index 6477dfd560..52885772cd 100644
--- a/Library/Homebrew/software_spec.rb
+++ b/Library/Homebrew/software_spec.rb
@@ -5,7 +5,7 @@ require "version"
 require "options"
 require "build_options"
 require "dependency_collector"
-require "bottles"
+require "utils/bottles"
 require "patch"
 require "compilers"
 
@@ -80,7 +80,7 @@ class SoftwareSpec
   end
 
   def bottled?
-    bottle_specification.tag?(bottle_tag) && \
+    bottle_specification.tag?(Utils::Bottles.tag) && \
       (bottle_specification.compatible_cellar? || ARGV.force_bottle?)
   end
 
@@ -254,7 +254,7 @@ class Bottle
     @resource.owner = formula
     @spec = spec
 
-    checksum, tag = spec.checksum_for(bottle_tag)
+    checksum, tag = spec.checksum_for(Utils::Bottles.tag)
 
     filename = Filename.create(formula, tag, spec.revision)
     @resource.url(build_url(spec.root_url, filename))
@@ -299,12 +299,12 @@ class BottleSpecification
     @revision = 0
     @prefix = DEFAULT_PREFIX
     @cellar = DEFAULT_CELLAR
-    @collector = BottleCollector.new
+    @collector = Utils::Bottles::Collector.new
   end
 
   def root_url(var = nil)
     if var.nil?
-      @root_url ||= "#{DEFAULT_DOMAIN}/#{Bintray.repository(tap)}"
+      @root_url ||= "#{DEFAULT_DOMAIN}/#{Utils::Bottles::Bintray.repository(tap)}"
     else
       @root_url = var
     end
diff --git a/Library/Homebrew/test/test_bottle_collector.rb b/Library/Homebrew/test/test_bottle_collector.rb
index 2621d12720..fa356cb93e 100644
--- a/Library/Homebrew/test/test_bottle_collector.rb
+++ b/Library/Homebrew/test/test_bottle_collector.rb
@@ -1,9 +1,9 @@
 require "testing_env"
-require "bottles"
+require "utils/bottles"
 
 class BottleCollectorTests < Homebrew::TestCase
   def setup
-    @collector = BottleCollector.new
+    @collector = Utils::Bottles::Collector.new
   end
 
   def checksum_for(tag)
diff --git a/Library/Homebrew/test/test_bottle_tag.rb b/Library/Homebrew/test/test_bottle_tag.rb
index 2bcbbf26d5..174c7d14ec 100644
--- a/Library/Homebrew/test/test_bottle_tag.rb
+++ b/Library/Homebrew/test/test_bottle_tag.rb
@@ -1,5 +1,5 @@
 require "testing_env"
-require "bottles"
+require "utils/bottles"
 
 class BottleTagTests < Homebrew::TestCase
   def test_tag_tiger_ppc
@@ -7,14 +7,14 @@ class BottleTagTests < Homebrew::TestCase
     Hardware::CPU.stubs(:type).returns(:ppc)
     Hardware::CPU.stubs(:family).returns(:foo)
     MacOS.stubs(:prefer_64_bit?).returns(false)
-    assert_equal :tiger_foo, bottle_tag
+    assert_equal :tiger_foo, Utils::Bottles.tag
   end
 
   def test_tag_tiger_intel
     MacOS.stubs(:version).returns(MacOS::Version.new("10.4"))
     Hardware::CPU.stubs(:type).returns(:intel)
     MacOS.stubs(:prefer_64_bit?).returns(false)
-    assert_equal :tiger, bottle_tag
+    assert_equal :tiger, Utils::Bottles.tag
   end
 
   def test_tag_tiger_ppc_64
@@ -22,7 +22,7 @@ class BottleTagTests < Homebrew::TestCase
     Hardware::CPU.stubs(:type).returns(:ppc)
     Hardware::CPU.stubs(:family).returns(:g5)
     MacOS.stubs(:prefer_64_bit?).returns(true)
-    assert_equal :tiger_g5_64, bottle_tag
+    assert_equal :tiger_g5_64, Utils::Bottles.tag
   end
 
   # Note that this will probably never be used
@@ -30,14 +30,14 @@ class BottleTagTests < Homebrew::TestCase
     MacOS.stubs(:version).returns(MacOS::Version.new("10.4"))
     Hardware::CPU.stubs(:type).returns(:intel)
     MacOS.stubs(:prefer_64_bit?).returns(true)
-    assert_equal :tiger_64, bottle_tag
+    assert_equal :tiger_64, Utils::Bottles.tag
   end
 
   def test_tag_leopard_intel
     MacOS.stubs(:version).returns(MacOS::Version.new("10.5"))
     Hardware::CPU.stubs(:type).returns(:intel)
     MacOS.stubs(:prefer_64_bit?).returns(false)
-    assert_equal :leopard, bottle_tag
+    assert_equal :leopard, Utils::Bottles.tag
   end
 
   def test_tag_leopard_ppc_64
@@ -45,35 +45,35 @@ class BottleTagTests < Homebrew::TestCase
     Hardware::CPU.stubs(:type).returns(:ppc)
     Hardware::CPU.stubs(:family).returns(:g5)
     MacOS.stubs(:prefer_64_bit?).returns(true)
-    assert_equal :leopard_g5_64, bottle_tag
+    assert_equal :leopard_g5_64, Utils::Bottles.tag
   end
 
   def test_tag_leopard_intel_64
     MacOS.stubs(:version).returns(MacOS::Version.new("10.5"))
     Hardware::CPU.stubs(:type).returns(:intel)
     MacOS.stubs(:prefer_64_bit?).returns(true)
-    assert_equal :leopard_64, bottle_tag
+    assert_equal :leopard_64, Utils::Bottles.tag
   end
 
   def test_tag_snow_leopard_32
     MacOS.stubs(:version).returns(MacOS::Version.new("10.6"))
     Hardware::CPU.stubs(:is_64_bit?).returns(false)
-    assert_equal :snow_leopard_32, bottle_tag
+    assert_equal :snow_leopard_32, Utils::Bottles.tag
   end
 
   def test_tag_snow_leopard_64
     MacOS.stubs(:version).returns(MacOS::Version.new("10.6"))
     Hardware::CPU.stubs(:is_64_bit?).returns(true)
-    assert_equal :snow_leopard, bottle_tag
+    assert_equal :snow_leopard, Utils::Bottles.tag
   end
 
   def test_tag_lion
     MacOS.stubs(:version).returns(MacOS::Version.new("10.7"))
-    assert_equal :lion, bottle_tag
+    assert_equal :lion, Utils::Bottles.tag
   end
 
   def test_tag_mountain_lion
     MacOS.stubs(:version).returns(MacOS::Version.new("10.8"))
-    assert_equal :mountain_lion, bottle_tag
+    assert_equal :mountain_lion, Utils::Bottles.tag
   end
 end
diff --git a/Library/Homebrew/test/test_formulary.rb b/Library/Homebrew/test/test_formulary.rb
index ec18ee0532..593e08cfa9 100644
--- a/Library/Homebrew/test/test_formulary.rb
+++ b/Library/Homebrew/test/test_formulary.rb
@@ -1,7 +1,7 @@
 require "testing_env"
 require "formula"
 require "formula_installer"
-require "bottles"
+require "utils/bottles"
 
 class FormularyTest < Homebrew::TestCase
   def test_class_naming
@@ -18,7 +18,7 @@ class FormularyFactoryTest < Homebrew::TestCase
     @name = "testball_bottle"
     @path = CoreTap.new.formula_dir/"#{@name}.rb"
     @bottle_dir = Pathname.new("#{File.expand_path("..", __FILE__)}/bottles")
-    @bottle = @bottle_dir/"testball_bottle-0.1.#{bottle_tag}.bottle.tar.gz"
+    @bottle = @bottle_dir/"testball_bottle-0.1.#{Utils::Bottles.tag}.bottle.tar.gz"
     @path.write <<-EOS.undent
       class #{Formulary.class_s(@name)} < Formula
         url "file://#{File.expand_path("..", __FILE__)}/tarballs/testball-0.1.tbz"
@@ -27,7 +27,7 @@ class FormularyFactoryTest < Homebrew::TestCase
         bottle do
           cellar :any_skip_relocation
           root_url "file://#{@bottle_dir}"
-          sha256 "9abc8ce779067e26556002c4ca6b9427b9874d25f0cafa7028e05b5c5c410cb4" => :#{bottle_tag}
+          sha256 "9abc8ce779067e26556002c4ca6b9427b9874d25f0cafa7028e05b5c5c410cb4" => :#{Utils::Bottles.tag}
         end
 
         def install
diff --git a/Library/Homebrew/test/testball_bottle.rb b/Library/Homebrew/test/testball_bottle.rb
index 31e98364e9..5aa582fa8a 100644
--- a/Library/Homebrew/test/testball_bottle.rb
+++ b/Library/Homebrew/test/testball_bottle.rb
@@ -6,7 +6,7 @@ class TestballBottle < Formula
       stable.bottle do
         cellar :any_skip_relocation
         root_url "file://#{File.expand_path("..", __FILE__)}/bottles"
-        sha256 "9abc8ce779067e26556002c4ca6b9427b9874d25f0cafa7028e05b5c5c410cb4" => bottle_tag
+        sha256 "9abc8ce779067e26556002c4ca6b9427b9874d25f0cafa7028e05b5c5c410cb4" => Utils::Bottles.tag
       end
       cxxstdlib_check :skip
     end
diff --git a/Library/Homebrew/utils/bottles.rb b/Library/Homebrew/utils/bottles.rb
new file mode 100644
index 0000000000..6a05a7aeb1
--- /dev/null
+++ b/Library/Homebrew/utils/bottles.rb
@@ -0,0 +1,104 @@
+require "tab"
+require "extend/ARGV"
+
+module Utils
+  class Bottles
+    class << self
+      def tag
+        @bottle_tag ||= "#{ENV["HOMEBREW_SYSTEM"]}-#{ENV["HOMEBREW_PROCESSOR"]}".downcase.to_sym
+      end
+
+      def built_as?(f)
+        return false unless f.installed?
+        tab = Tab.for_keg(f.installed_prefix)
+        tab.built_as_bottle
+      end
+
+      def file_outdated?(f, file)
+        filename = file.basename.to_s
+        return unless f.bottle && filename.match(Pathname::BOTTLE_EXTNAME_RX)
+
+        bottle_ext = filename[native_regex, 1]
+        bottle_url_ext = f.bottle.url[native_regex, 1]
+
+        bottle_ext && bottle_url_ext && bottle_ext != bottle_url_ext
+      end
+
+      def native_regex
+        /(\.#{Regexp.escape(tag)}\.bottle\.(\d+\.)?tar\.gz)$/o
+      end
+
+      def receipt_path(bottle_file)
+        Utils.popen_read("/usr/bin/tar", "-tzf", bottle_file, "*/*/INSTALL_RECEIPT.json").chomp
+      end
+
+      def resolve_formula_names(bottle_file)
+        receipt_file_path = receipt_path bottle_file
+        receipt_file = Utils.popen_read("tar", "-xOzf", bottle_file, receipt_file_path)
+        name = receipt_file_path.split("/").first
+        tap = Tab.from_file_content(receipt_file, "#{bottle_file}/#{receipt_file_path}").tap
+
+        if tap.nil? || tap.core_tap?
+          full_name = name
+        else
+          full_name = "#{tap}/#{name}"
+        end
+
+        [name, full_name]
+      end
+
+      def resolve_version(bottle_file)
+        PkgVersion.parse receipt_path(bottle_file).split("/")[1]
+      end
+    end
+
+    class Bintray
+      def self.package(formula_name)
+        formula_name.to_s.tr("+", "x")
+      end
+
+      def self.repository(tap = nil)
+        if tap.nil? || tap.core_tap?
+          "bottles"
+        else
+          "bottles-#{tap.repo}"
+        end
+      end
+    end
+
+    class Collector
+      def initialize
+        @checksums = {}
+      end
+
+      def fetch_checksum_for(tag)
+        tag = find_matching_tag(tag)
+        return self[tag], tag if tag
+      end
+
+      def keys
+        @checksums.keys
+      end
+
+      def [](key)
+        @checksums[key]
+      end
+
+      def []=(key, value)
+        @checksums[key] = value
+      end
+
+      def key?(key)
+        @checksums.key?(key)
+      end
+
+      private
+
+      def find_matching_tag(tag)
+        tag if key?(tag)
+      end
+    end
+  end
+end
+
+require "extend/os/bottles"
diff --git a/Library/brew.sh b/Library/brew.sh
index 76cb2f9e98..5589bcc684 100644
--- a/Library/brew.sh
+++ b/Library/brew.sh
@@ -118,7 +118,9 @@ export HOMEBREW_LIBRARY
 export HOMEBREW_VERSION
 export HOMEBREW_CELLAR
 export HOMEBREW_RUBY_PATH
+export HOMEBREW_SYSTEM
 export HOMEBREW_CURL
+export HOMEBREW_PROCESSOR
 export HOMEBREW_PRODUCT
 export HOMEBREW_OS_VERSION
 export HOMEBREW_OSX_VERSION