Allow passing down configuration into Cask.

Library/Homebrew/cask/lib/hbc/artifact/abstract_artifact.rb

@@ -95,10 +95,11 @@ module Hbc
         [executable, arguments]
       end
 
-      attr_reader :cask
+      attr_reader :cask, :config
 
       def initialize(cask)
         @cask = cask
+        @config = cask.config
       end
 
       def to_s

Library/Homebrew/cask/lib/hbc/artifact/artifact.rb

@@ -25,7 +25,7 @@ module Hbc
         new(cask, source_string, **target_hash)
       end
 
-      def self.resolve_target(target)
+      def resolve_target(target)
         Pathname(target)
       end
 

Library/Homebrew/cask/lib/hbc/artifact/relocated.rb

@@ -18,8 +18,8 @@ module Hbc
         new(cask, source_string, **target_hash)
       end
 
-      def self.resolve_target(target)
-        Config.global.public_send(dirmethod).join(target)
+      def resolve_target(target)
+        config.public_send(self.class.dirmethod).join(target)
       end
 
       attr_reader :source, :target
@@ -32,7 +32,7 @@ module Hbc
         source = cask.staged_path.join(source)
         @source = source
         target ||= source.basename
-        @target = self.class.resolve_target(target)
+        @target = resolve_target(target)
       end
 
       def to_a

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

@@ -6,17 +6,18 @@ module Hbc
     extend Forwardable
     include Metadata
 
-    attr_reader :token, :sourcefile_path
+    attr_reader :token, :sourcefile_path, :config
 
     def tap
       return super if block_given? # Object#tap
       @tap
     end
 
-    def initialize(token, sourcefile_path: nil, tap: nil, &block)
+    def initialize(token, sourcefile_path: nil, tap: nil, config: Config.global, &block)
       @token = token
       @sourcefile_path = sourcefile_path
       @tap = tap
+      @config = config
       @dsl = DSL.new(self)
       return unless block_given?
       @dsl.instance_eval(&block)

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

@@ -292,7 +292,7 @@ module Hbc
     end
 
     def appdir
-      Config.global.appdir
+      cask.config.appdir
     end
   end
 end