无法安装spree gem - 错误：无效的gem：包已损坏

Question

我正在尝试安装Spree gem，但它给了我这个错误：

 gem install spree
Fetching: httparty-0.13.3.gem (100%)
When you HTTParty, you must party hard!
Successfully installed httparty-0.13.3
Fetching: highline-1.6.21.gem (100%)
Successfully installed highline-1.6.21
Fetching: friendly_id-5.0.4.gem (100%)
Successfully installed friendly_id-5.0.4
Fetching: font-awesome-rails-4.2.0.0.gem (100%)
Successfully installed font-awesome-rails-4.2.0.0
Fetching: ffaker-1.25.0.gem (100%)
Successfully installed ffaker-1.25.0
Fetching: polyglot-0.3.5.gem (100%)
Successfully installed polyglot-0.3.5
Fetching: colorize-0.7.3.gem (100%)
Successfully installed colorize-0.7.3
ERROR:  Error installing spree:
    invalid gem: package is corrupt, exception while verifying: undefined method `size' for nil:NilClass (NoMethodError) in /home/tarek/.rvm/rubies/ruby-2.1.2/lib/ruby/gems/2.1.0/cache/nokogiri-1.6.4.1.gem

我尝试再次卸载并重新安装Nokogir，结果相同。

当我尝试sudo gem install nokogiri发生了另一个错误：

ERROR:  Error installing nokogiri:
    ERROR: Failed to build gem native extension.

        /usr/bin/ruby1.9.1 extconf.rb
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
    from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from extconf.rb:4:in `<main>'


Gem files will remain installed in /var/lib/gems/1.9.1/gems/nokogiri-1.6.4.1 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/nokogiri-1.6.4.1/ext/nokogiri/gem_make.out

Answer 1

我认为RubyGems没有正确下载文件。 因此，系统报告宝石已损坏。 删除/home/tarek/.rvm/rubies/ruby-2.1.2/lib/ruby/gems/2.1.0/cache/nokogiri-1.6.4.1.gem然后再次安装gem。

$ sudo rm /home/tarek/.rvm/rubies/ruby-2.1.2/lib/ruby/gems/2.1.0/cache/nokogiri-1.6.4.1.gem

$ gem install nokogiri

Answer 2

请确保安装以下命令：

sudo apt-get install libxslt-dev libxml2-dev

现在尝试安装Nokogiri。 如果您使用RVM，请注意sudo 。

sudo gem install nokogiri

希望我的回答会有所帮助。

谢谢。

Answer 3

看起来你已经安装了系统Ruby。

你需要先做：

$ sudo apt-get install ruby-dev

然后做：

$ sudo gem install nokogiri

我鼓励您使用Ruby Version Manager（如RVM或rbenv）来管理Ruby环境，而不是在开发环境中使用Ruby系统。