# Gemfile

class Bundler::Dependency
  PLATFORM_MAP = PLATFORM_MAP.merge(:mri_192 => Gem::Platform::RUBY)
  private
  def mri_192?
    mri? && RUBY_VERSION == "1.9.2"
  end
end
Bundler::Dsl::VALID_PLATFORMS = Bundler::Dependency::PLATFORM_MAP.keys.freeze

gem 'ruby-debug19', :require => 'ruby-debug', :platform => :mri_192