# File lib/bundler/cli.rb, line 109
    def lock
      if locked?
        Bundler.ui.info("Your bundle is already locked, relocking.")
        remove_lockfiles
      end

      Bundler.runtime.lock
      Bundler.ui.confirm("Your bundle is now locked. " +
        "Use `bundle show [gemname]` to list the gems in the environment.")
    rescue GemNotFound, VersionConflict => e
      Bundler.ui.error(e.message)
      Bundler.ui.warn "Run `bundle install` to install missing gems."
      exit 128
    end