Question

仍然在我的rvm环境中遇到一个有害的bug：

    rails -v
/usr/local/lib/site_ruby/1.8/rubygems/dependency.rb:296:in `to_specs': Could not find 'railties' (>= 0) among 0 total gem(s) (Gem::LoadError)
    from /usr/local/lib/site_ruby/1.8/rubygems/dependency.rb:307:in `to_spec'
    from /usr/local/lib/site_ruby/1.8/rubygems/core_ext/kernel_gem.rb:47:in `gem'
    from /usr/bin/rails:22

这看起来像路径问题，因为它正在查看Debian附带的默认Ruby。这是我的路径：

/home/caseyr/.rvm/gems/ruby-2.0.0-p0/bin:/home/caseyr/.rvm/gems/ruby-2.0.0-p0@global/bin:/home/caseyr/ .rvm /红宝石/红宝石2.0.0-P0 /斌：/home/caseyr/.rvm/bin：/家庭/ caseyr /斌：在/ usr / local / bin目录：在/ usr / bin中：/ bin中：在/ usr /箱/ X11：在/ usr /游戏

然而，这是默认的Ruby版本：

ruby -v
ruby 2.0.0p0 (2013-02-24 revision 39474) [i686-linux]

可能是Rails有自己独立的路径吗？不知道，但这很有启发性：

which rails
/usr/bin/rails

这似乎完全忽略了rvm，因为路径应该指向ruby 2.0.0。怎么会这样？

宝石环境似乎没问题：

    $ gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 2.0.0
  - RUBY VERSION: 2.0.0 (2013-02-24 patchlevel 0) [i686-linux]
  - INSTALLATION DIRECTORY: /home/caseyr/.rvm/gems/ruby-2.0.0-p0
  - RUBY EXECUTABLE: /home/caseyr/.rvm/rubies/ruby-2.0.0-p0/bin/ruby
  - EXECUTABLE DIRECTORY: /home/caseyr/.rvm/gems/ruby-2.0.0-p0/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86-linux
  - GEM PATHS:
     - /home/caseyr/.rvm/gems/ruby-2.0.0-p0
     - /home/caseyr/.rvm/gems/ruby-2.0.0-p0@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
     - "gem" => "--no-rdoc --no-ri"
  - REMOTE SOURCES:
     - http://rubygems.org/

--as well as the rvm one:
<BS>$ rvm info

ruby-2.0.0-p0:

  system:
    uname:       "Linux beta 2.6.32-5-686 #1 SMP Sun Sep 23 09:49:36 UTC 2012 i686 GNU/Linux"
    system:      "debian/6.0.7/i386"
    bash:        "/usr/local/bin/bash => GNU bash, version 4.1.5(1)-release (i486-pc-linux-gnu)"
    zsh:         " => not installed"

  rvm:
    version:      "rvm 1.19.6 (stable) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]"
    updated:      "8 days 17 minutes 26 seconds ago"

  ruby:
    interpreter:  "ruby"
    version:      "2.0.0p0"
    date:         "2013-02-24"
    platform:     "i686-linux"
    patchlevel:   "2013-02-24 revision 39474"
    full_version: "ruby 2.0.0p0 (2013-02-24 revision 39474) [i686-linux]"

  homes:
    gem:          "/home/caseyr/.rvm/gems/ruby-2.0.0-p0"
    ruby:         "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0"

  binaries:
    ruby:         "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0/bin/ruby"
    irb:          "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0/bin/irb"
    gem:          "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0/bin/gem"
    rake:         "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0/bin/rake"

  environment:
    PATH:         "/home/caseyr/.rvm/gems/ruby-2.0.0-p0/bin:/home/caseyr/.rvm/gems/ruby-2.0.0-p0@global/bin:/home/caseyr/.rvm/rubies/ruby-2.0.0-p0/bin:/home/caseyr/.rvm/bin:/home/caseyr/bin:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games"
    GEM_HOME:     "/home/caseyr/.rvm/gems/ruby-2.0.0-p0"
    GEM_PATH:     "/home/caseyr/.rvm/gems/ruby-2.0.0-p0:/home/caseyr/.rvm/gems/ruby-2.0.0-p0@global"
    MY_RUBY_HOME: "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0"
    IRBRC:        "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0/.irbrc"
    RUBYOPT:      ""
    gemset:       ""

我意识到有类似的问题已经得到了解答（例如this one），但仍然没有找到让我理解真正发生的事情（经过多次删除，重新安装等） ...）

任何帮助将不胜感激;真的很想让Rails再次工作......

- rixter

Answer 1

首先看看使用rvm

安装了哪些红宝石

rvm list

它将显示已安装的ruby版本。

然后使用rvm --default use ruby-2.0.0-p0

然后使用rvm gemset create gemset1

创建gemset

rvm use ruby-2.0.0-p0@gemset1

gem install rails -v rails_version

安装后尝试rails -v

为什么rvm安装的Rails版本不起作用？

1 个答案: