cask depends_on arch: remove everything but 64-bit intel

Library/Homebrew/cask/lib/hbc/dsl/depends_on.rb

@@ -13,30 +13,9 @@ module Hbc
       ].freeze
 
       VALID_ARCHES = {
-        intel:    { type: :intel, bits: [32, 64] },
-        ppc:      { type: :ppc,   bits: [32, 64] },
+        intel:    { type: :intel, bits: 64 },
         # specific
-        i386:     { type: :intel, bits: 32 },
         x86_64:   { type: :intel, bits: 64 },
-        ppc_7400: { type: :ppc,   bits: 32 },
-        ppc_64:   { type: :ppc,   bits: 64 },
-      }.freeze
-
-      # Intentionally undocumented: catch variant spellings.
-      ARCH_SYNONYMS = {
-        x86_32:   :i386,
-        x8632:    :i386,
-        x8664:    :x86_64,
-        intel_32: :i386,
-        intel32:  :i386,
-        intel_64: :x86_64,
-        intel64:  :x86_64,
-        amd_64:   :x86_64,
-        amd64:    :x86_64,
-        ppc7400:  :ppc_7400,
-        ppc_32:   :ppc_7400,
-        ppc32:    :ppc_7400,
-        ppc64:    :ppc_64,
       }.freeze
 
       attr_accessor :java
@@ -100,8 +79,7 @@ module Hbc
       def arch=(*args)
         @arch ||= []
         arches = args.map do |elt|
-          elt = elt.to_s.downcase.sub(/^:/, "").tr("-", "_").to_sym
-          ARCH_SYNONYMS.key?(elt) ? ARCH_SYNONYMS[elt] : elt
+          elt.to_s.downcase.sub(/^:/, "").tr("-", "_").to_sym
         end
         invalid_arches = arches - VALID_ARCHES.keys
         raise "invalid 'depends_on arch' values: #{invalid_arches.inspect}" unless invalid_arches.empty?

Library/Homebrew/cask/test/cask/depends_on_test.rb

@@ -79,15 +79,6 @@ describe "Satisfy Dependencies and Requirements" do
         Hbc::Installer.new(arch_cask).install
       end
     end
-
-    it "raises an exception when depends_on arch is not satisfied" do
-      arch_cask = Hbc.load("with-depends-on-arch-failure")
-      lambda {
-        shutup do
-          Hbc::Installer.new(arch_cask).install
-        end
-      }.must_raise(Hbc::CaskError)
-    end
   end
 
   describe "depends_on x11" do

Library/Homebrew/cask/test/support/Casks/with-depends-on-arch-failure.rb

@@ -1,12 +0,0 @@
-test_cask 'with-depends-on-arch-failure' do
-  version '1.2.3'
-  sha256 '67cdb8a02803ef37fdbf7e0be205863172e41a561ca446cd84f0d7ab35a99d94'
-
-  url "file://#{TEST_FIXTURE_DIR}/cask/caffeine.zip"
-  homepage 'http://example.com/with-depends-on-arch-failure'
-
-  # guarantee mismatched hardware
-  depends_on arch: Hardware::CPU.intel? ? :ppc : :intel
-
-  app 'Caffeine.app'
-end

Library/Homebrew/cask/test/support/Casks/with-depends-on-arch.rb

@@ -6,7 +6,7 @@ test_cask 'with-depends-on-arch' do
   homepage 'http://example.com/with-depends-on-arch'
 
   # covers all known hardware; always succeeds
-  depends_on arch: [:ppc, :intel]
+  depends_on arch: :intel
 
   app 'Caffeine.app'
 end