为什么“用户安装目录"与Ruby版本不匹配? [英] Why doesn't 'USER INSTALLATION DIRECTORY' match with the Ruby version?

问题描述

此问题是"什么是"USER"的第二部分"ruby​​Gems env 中的安装目录""，但最终没有得到答复.

This question was the second part of "What is "USER INSTALLATION DIRECTORY" in rubyGems env" but finally it wasn't answered.

现在我想知道为什么在我的情况下'USER INSTALLATION DIRECTORY不适应Ruby版本.另一个问题是bundle install默认使用什么选项，也许是--user-install?

Now I'm wondering why in my case 'USER INSTALLATION DIRECTORY does not mach with the Ruby version. And another question is what option bundle install uses by default, maybe --user-install?

rvm list:

 * ruby-2.5.0 [ x86_64 ]
=> ruby-2.5.1 [ x86_64 ]
   ruby-2.6.0-preview1 [ x86_64 ]

gem env:

RubyGems Environment:
  - RUBYGEMS VERSION: 2.7.7
  - RUBY VERSION: 2.5.1 (2018-03-29 patchlevel 57) [x86_64-linux]
  - INSTALLATION DIRECTORY: /home/ivan/.rvm/gems/ruby-2.5.1
  - USER INSTALLATION DIRECTORY: /home/ivan/.gem/ruby/2.5.0
  ...

推荐答案

Gems的安装目录基于Ruby的库兼容版本.由于Ruby 2.5.1与Ruby 2.5.0兼容，因此其库兼容版本仍为2.5.0.

The installation directory for Gems is based on the library compatibility version of Ruby. Since Ruby 2.5.1 is library-compatible with Ruby 2.5.0, its library compatibility version is still 2.5.0.

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