gem.rb in bundler-2.2.5

- old
+ new

@@ -57,10 +57,11 @@
         :test             => options[:test],
         :ext              => options[:ext],
         :exe              => options[:exe],
         :bundler_version  => bundler_dependency_version,
         :github_username  => github_username.empty? ? "[USERNAME]" : github_username,
+        :required_ruby_version => Gem.ruby_version < Gem::Version.new("2.4.a") ? "2.3.0" : "2.4.0",
       }
       ensure_safe_gem_name(name, constant_array)
 
       templates = {
         "#{Bundler.preferred_gemfile_name}.tt" => Bundler.preferred_gemfile_name,
@@ -145,9 +146,10 @@
         "RuboCop is a static code analyzer that has out-of-the-box rules for many " \
         "of the guidelines in the community style guide. " \
         "For more information, see the RuboCop docs (https://docs.rubocop.org/en/stable/) " \
         "and the Ruby Style Guides (https://github.com/rubocop-hq/ruby-style-guide).")
         config[:rubocop] = true
+        config[:rubocop_version] = Gem.ruby_version < Gem::Version.new("2.4.a") ? "0.81.0" : "1.7"
         Bundler.ui.info "RuboCop enabled in config"
         templates.merge!("rubocop.yml.tt" => ".rubocop.yml")
       end
 
       templates.merge!("exe/newgem.tt" => "exe/#{name}") if config[:exe]