Rakefile in muack-0.7.2 vs Rakefile in muack-0.7.3

@@ -1,23 +1,14 @@
 
 begin
   require "#{dir = File.dirname(__FILE__)}/task/gemgem"
 rescue LoadError
   sh 'git submodule update --init'
-  exec Gem.ruby, '-S', 'rake', *ARGV
+  exec Gem.ruby, '-S', $PROGRAM_NAME, *ARGV
 end
 
-Gemgem.dir = dir
-($LOAD_PATH << File.expand_path("#{Gemgem.dir}/lib")).uniq!
-
-desc 'Generate gemspec'
-task 'gem:spec' do
-  Gemgem.spec = Gemgem.create do |s|
-    require 'muack/version'
-    s.name    = 'muack'
-    s.version = Muack::VERSION
-
-    %w[].each{ |g| s.add_runtime_dependency(g) }
-  end
-
-  Gemgem.write
+Gemgem.init(dir) do |s|
+  require 'muack/version'
+  s.name    = 'muack'
+  s.version = Muack::VERSION
+  %w[].each{ |g| s.add_runtime_dependency(g) }
 end