class Gem::Commands::InstallCommand

def initialize
  defaults = Gem::DependencyInstaller::DEFAULT_OPTIONS.merge({
    :format_executable => false,
    :lock              => true,
    :suggest_alternate => true,
    :version           => Gem::Requirement.default,
    :without_groups    => [],
  })
  super 'install', 'Install a gem into the local repository', defaults
  add_install_update_options
  add_local_remote_options
  add_platform_option
  add_version_option
  add_prerelease_option "to be installed. (Only for listed gems)"
  @installed_specs = []
end