Add helper functions for deps and uses explicitly.

Library/Homebrew/cmd/deps.rb

@@ -5,6 +5,8 @@ require "ostruct"
 require "cli/parser"
 
 module Homebrew
+  extend DependenciesHelpers
+
   module_function
 
   def deps_args

Library/Homebrew/cmd/uses.rb

@@ -8,6 +8,8 @@ require "formula"
 require "cli/parser"
 
 module Homebrew
+  extend DependenciesHelpers
+
   module_function
 
   def uses_args

Library/Homebrew/dependencies.rb

@@ -56,9 +56,7 @@ class Requirements < DelegateClass(Set)
   end
 end
 
-module Homebrew
+module DependenciesHelpers
-  module_function
-
   def argv_includes_ignores(argv)
     includes = []
     ignores = []
@@ -81,7 +79,7 @@ module Homebrew
       ignores << "optional?"
     end
 
-    ignores << "recommended?" if Homebrew.args.skip_recommended?
+    ignores << "recommended?" if args.skip_recommended?
 
     [includes, ignores]
   end