CentOS5.8でruby-1.9.3-p194を使用したい。私はそれをrvmとシステムでインストールすることができました(libyamlとlibyaml-develがインストールされました)。しかし、すべての「rake」タスクを実行することはできません(「rakespec」だけではありません)。
「そのようなファイルを読み込めません--yaml/encoding」というメッセージが表示されました。トレース付きのサンプル結果です。「rake」バージョンは「0.9.2.2」です。どうすれば解決できますか?
$ rake spec --trace
rake aborted!
cannot load such file -- yaml/encoding
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:182:in `require'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:182:in `block in require'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:547:in `new_constants_in'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:182:in `require'
/home/inohiro/Projects/rails_2_3_14_r5066/src/admin/lib/tasks/fixture_dump.rake:2:in `<top (required)>'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:171:in `load'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:171:in `block in load_with_new_constant_marking'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:547:in `new_constants_in'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:171:in `load_with_new_constant_marking'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rails-2.3.14/lib/tasks/rails.rb:14:in `block in <top (required)>'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rails-2.3.14/lib/tasks/rails.rb:14:in `each'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rails-2.3.14/lib/tasks/rails.rb:14:in `<top (required)>'
/home/inohiro/Projects/rails_2_3_14_r5066/src/admin/Rakefile:10:in `require'
/home/inohiro/Projects/rails_2_3_14_r5066/src/admin/Rakefile:10:in `<top (required)>'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2.2/lib/rake/rake_module.rb:25:in `load'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2.2/lib/rake/rake_module.rb:25:in `load_rakefile'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2.2/lib/rake/application.rb:501:in `raw_load_rakefile'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2.2/lib/rake/application.rb:82:in `block in load_rakefile'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2.2/lib/rake/application.rb:81:in `load_rakefile'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2.2/lib/rake/application.rb:65:in `block in run'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/bin/rake:19:in `load'
/home/inohiro/.rvm/gems/ruby-1.9.3-p194/bin/rake:19:in `<main>'