ruby 更新到 2.5.0 后，需要 'bundler/setup' 引发异常

Question

在 ruby​​ 2.5.0 更新后从 rails 应用程序调用 rake，不起作用。

$ rake
Traceback (most recent call last):
    22: from ./bin/rake:4:in `<main>'
    21: from ./bin/rake:4:in `require_relative'
    20: from /Users/user/work/hw/relocations_app/config/boot.rb:5:in `<top (required)>'
    19: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:39:in `require'
    18: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:135:in `rescue in require'
    17: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:135:in `require'
    16: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/setup.rb:10:in `<top (required)>'
    15: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler.rb:107:in `setup'
    14: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:20:in `setup'
    13: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:108:in `block in definition_method'
    12: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/definition.rb:226:in `requested_specs'
    11: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/definition.rb:237:in `specs_for'
    10: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/definition.rb:170:in `specs'
     9: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/definition.rb:247:in `resolve'
     8: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/definition.rb:806:in `converge_locked_specs'
     7: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/definition.rb:874:in `expand_dependencies'
     6: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/definition.rb:874:in `each'
     5: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/definition.rb:887:in `block in expand_dependencies'
     4: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/definition.rb:887:in `each'
     3: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/definition.rb:888:in `block (2 levels) in expand_dependencies'
     2: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:39:in `require'
     1: from /Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:135:in `rescue in require'
/Users/user/.rvm/rubies/ruby-2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:135:in `require': cannot load such file -- bundler/dep_proxy (LoadError)

config/boot.rb

# frozen_string_literal: true

ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../Gemfile', __dir__)

require 'bundler/setup' # Set up gems listed in the Gemfile.

bundler/setup 不能是必需的。

乘客也有同样的问题，用它来启动 rails 应用程序：

Error ID: 309814d3
  Error details saved to: /tmp/passenger-error-yCUWSg.html
  Message from application: cannot load such file -- bundler/setup (LoadError)
  /var/www/vhosts/user/.rvm/rubies/ruby-2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
  /var/www/vhosts/user/.rvm/rubies/ruby-2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
  /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:456:in `activate_gem'
  /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:323:in `block in run_load_path_setup_code'
  /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:461:in `running_bundler'
  /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:322:in `run_load_path_setup_code'
  /usr/share/passenger/helper-scripts/rack-preloader.rb:100:in `preload_app'
  /usr/share/passenger/helper-scripts/rack-preloader.rb:156:in `<module:App>'
  /usr/share/passenger/helper-scripts/rack-preloader.rb:30:in `<module:PhusionPassenger>'
  /usr/share/passenger/helper-scripts/rack-preloader.rb:29:in `<main>'

有人对 ruby​​ 2.5.0 有同样的问题吗？

Answer 1

修复很简单：将 RubyGems 最低升级到 2.7.4 版本

gem update --system

RubyGems 2.7.4 includes bug fixes.

Answer 2

遗憾的是，这里唯一的解决方案是将 Bundler 升级到 >= 1.16.1。请参阅https://github.com/heroku/heroku-buildpack-ruby/pull/738 以获取理论上已解决但不幸被 Heroku 阻止的示例。

升级到 Bundler 1.16.1+，您不会再遇到任何问题了。