move patching to better spot

Gemfile

@@ -1,5 +1,12 @@
 source 'https://rubygems.org'
 
+module ::Kernel
+  def rails_master?
+    ENV["RAILS_MASTER"]
+  end
+end
+
+if rails_master?
   # monkey patching to support dual booting
   module Bundler::SharedHelpers
     def default_lockfile=(path)
@@ -10,14 +17,19 @@ module Bundler::SharedHelpers
     end
   end
 
-module ::Kernel
+  Bundler::SharedHelpers.default_lockfile = Pathname.new("#{Bundler::SharedHelpers.default_gemfile}_master.lock")
-  def rails_master?
+
-    ENV["RAILS_MASTER"]
+  # Bundler::Dsl.evaluate already called with an incorrect lockfile ... fix it
+  class Bundler::Dsl
+    # A bit messy, this can be called multiple times by bundler, avoid blowing the stack
+    unless self.method_defined? :to_definition_unpatched
+      alias_method :to_definition_unpatched, :to_definition
+    end
+    def to_definition(bad_lockfile, unlock)
+      to_definition_unpatched(Bundler::SharedHelpers.default_lockfile, unlock)
     end
   end
 
-if rails_master?
-  Bundler::SharedHelpers.default_lockfile = Pathname.new("#{Bundler::SharedHelpers.default_gemfile}_master.lock")
 end
 
 # Monkey patch bundler to support mri_21
@@ -53,17 +65,6 @@ unless Bundler::Dependency::PLATFORM_MAP.include? :mri_21
    end
 end
 
-# Bundler::Dsl.evaluate already called with an incorrect lockfile ... fix it
-class Bundler::Dsl
-  # A bit messy, this can be called multiple times by bundler, avoid blowing the stack
-  unless self.method_defined? :to_definition_unpatched
-    alias_method :to_definition_unpatched, :to_definition
-  end
-  def to_definition(bad_lockfile, unlock)
-    to_definition_unpatched(Bundler::SharedHelpers.default_lockfile, unlock)
-  end
-end
-
 # see: https://github.com/mbleigh/seed-fu/pull/54
 # taking forever to get changes upstream in seed-fu
 gem 'seed-fu-discourse', require: 'seed-fu'