未初始化常量 Syck::DefaultResolver

Question

我是 ruby​​（尤其是 Rails）的新手开发者，但我确实有一些 Perl 和 php 经验。不管怎样，我正在尝试使用最新的 ruby​​ 包：v1.9.2-p136 在 Ubuntu 10.10 上配置 rails 版本 3。虽然比 p0 更好，但进​​展不太顺利：至少它们包含了 yaml.rb 和朋友，这样我就不用花时间把它们拼凑在一起。但是，我仍然遇到 YAML 包的问题，​​每当我尝试安装或配置任何 gem 或包时，该问题就会显现出来。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

当我尝试使用 synaptic 安装 redmine 时，实际上出现了这种情况：它现在说每个 synaptic 安装都以失败告终，所有原因都是：

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

我写了一个关于安装此版本 Ruby 的指南： http:// ryanbigg.com/2010/12/ubuntu-ruby-rvm-rails-and-you。它应该可以让您立即启动并运行。