install_from_spec

# File lib/bundler/installer/gem_installer.rb, line 15
    def install_from_spec
      post_install_message = spec_settings ? install_with_settings : install
      Bundler.ui.debug "#{worker}:  #{spec.name} (#{spec.version}) from #{spec.loaded_from}"
      generate_executable_stubs
      return true, post_install_message
    rescue Bundler::InstallHookError, Bundler::SecurityError, APIResponseMismatchError
      raise
    rescue Errno::ENOSPC
      return false, out_of_space_message
    rescue StandardError => e
      return false, specific_failure_message(e)
    end