未初始化常数Syck::DefaultResolver

Question

对于ruby，尤其是rails，我是一个相当新的开发人员，但我确实有一些perl和php经验。无论如何，我正在尝试使用最新的ruby包：v1.9.2-p136在Ubuntu10.10上配置v1.9.2-p136版本3。这并不是很好，虽然比p0更好:至少他们包括了yaml.rb和朋友，这样我就不会把时间花在一起了。但是，我仍然对YAML包有问题，每当我试图安装或配置任何gem或软件包时，YAML包就会显示出来。我已经通过synaptic安装了rails；这只是为了展示问题。

gem i rails
ERROR:  Loading command: install (NameError)
uninitialized constant Syck::DefaultResolver
ERROR:  While executing gem ... (NameError)
uninitialized constant Gem::Commands::InstallCommand

当我试图用redmine安装synaptic时，实际上出现了这样的情况:它现在说，每个突触安装都失败了，这都是因为：

rake aborted!
uninitialized constant Syck::DefaultResolver
/usr/local/lib/ruby/1.9.1/rake.rb:2482:in `const_missing'
/usr/local/lib/ruby/1.9.1/syck.rb:82:in `<module:Syck>'
/usr/local/lib/ruby/1.9.1/syck.rb:80:in `<top (required)>'
<internal:lib/rubygems/custom_require>:29:in `require'
<internal:lib/rubygems/custom_require>:29:in `require'
/usr/local/lib/ruby/site_ruby/1.9.1/yaml/syck.rb:5:in `<top (required)>'
<internal:lib/rubygems/custom_require>:29:in `require'
<internal:lib/rubygems/custom_require>:29:in `require'
/usr/local/lib/ruby/site_ruby/1.9.1/yaml.rb:12:in `<top (required)>'
<internal:lib/rubygems/custom_require>:29:in `require'
<internal:lib/rubygems/custom_require>:29:in `require'
/usr/share/redmine/vendor/rails/railties/lib/rails/vendor_gem_source_index.rb:2:in `<top (required)>'
<internal:lib/rubygems/custom_require>:29:in `require'
<internal:lib/rubygems/custom_require>:29:in `require'
/usr/share/redmine/vendor/rails/railties/lib/rails/gem_dependency.rb:1:in `<top (required)>'
<internal:lib/rubygems/custom_require>:29:in `require'
<internal:lib/rubygems/custom_require>:29:in `require'
/usr/share/redmine/vendor/rails/railties/lib/initializer.rb:10:in `<top (required)>'
<internal:lib/rubygems/custom_require>:29:in `require'
<internal:lib/rubygems/custom_require>:29:in `require'
/usr/share/redmine/config/boot.rb:45:in `load_initializer'
/usr/share/redmine/config/boot.rb:38:in `run'
/usr/share/redmine/config/boot.rb:11:in `boot!'
/usr/share/redmine/config/boot.rb:110:in `<top (required)>'
<internal:lib/rubygems/custom_require>:29:in `require'
<internal:lib/rubygems/custom_require>:29:in `require'
/usr/share/redmine/Rakefile:4:in `<top (required)>'
/usr/local/lib/ruby/1.9.1/rake.rb:2373:in `load'
/usr/local/lib/ruby/1.9.1/rake.rb:2373:in `raw_load_rakefile'
/usr/local/lib/ruby/1.9.1/rake.rb:2007:in `block in load_rakefile'
/usr/local/lib/ruby/1.9.1/rake.rb:2058:in `standard_exception_handling'
/usr/local/lib/ruby/1.9.1/rake.rb:2006:in `load_rakefile'
/usr/local/lib/ruby/1.9.1/rake.rb:1991:in `run'
/usr/local/bin/rake:31:in `<main>'
dpkg: error processing redmine (--configure):
subprocess installed post-installation script returned error exit status 1

Answer 1

我编写了一个关于安装这个版本的Ruby：http://ryanbigg.com/2010/12/ubuntu-ruby-rvm-rails-and-you的指南。它应该能让你在短时间内起床跑步。