Rakefile in review-retrovert-0.9.8

- old
+ new

@@ -1,13 +1,21 @@
 ##
 ## Don't change this file!!
 ## Instead, edit 'lib/tasks/mytasks.rake' file.
 ##
 
+## `gem install foobar` will raise error in macOS.
+## the following is a hack to avoid that error.
+rubygems_dir = File.join(Dir.pwd, 'rubygems')
+if ENV['GEM_HOME'].to_s.empty? && File.directory?(rubygems_dir)
+  #ENV['GEM_HOME'] = rubygems_dir
+  Gem.paths = {'GEM_HOME' => rubygems_dir}
+end
 Dir.glob('lib/tasks/*.rake').each do |file|
   load(file)
 end
 
+##
 desc "+ list tasks"
 task :help do
   sh "rake -T"
 end
 