再一次，安装指南针时遇到问题，就像这里不同。
我的版本和错误：
$ cat /etc/issue
Ubuntu 10.04.1 LTS \n \l
$ ruby -v
ruby 1.8.7 (2010-01-10 patchlevel 249) [i486-linux]
$ compass -v
Compass 0.8.17 [2465bab]
Copyright (c) 2008-2009 Chris Eppstein
Released under the MIT License.
$ haml -v
Haml/Sass 3.0.18 (Classy Cassidy)
$ compass -w --trace
NoMethodError on line 18 of /var/lib/gems/1.8/gems/chriseppstein-compass-0.8.17/lib/compass/sass_extensions/monkey_patches/stylesheet_updating.rb: undefined method `dependency_updated?' for Sass::Plugin:Module
/var/lib/gems/1.8/gems/chriseppstein-compass-0.8.17/lib/compass/compiler.rb:39:in `out_of_date?'
/var/lib/gems/1.8/gems/chriseppstein-compass-0.8.17/lib/compass/compiler.rb:38:in `each'
/var/lib/gems/1.8/gems/chriseppstein-compass-0.8.17/lib/compass/compiler.rb:38:in `out_of_date?'
/var/lib/gems/1.8/gems/chriseppstein-compass-0.8.17/lib/compass/commands/watch_project.rb:52:in `recompile'
/var/lib/gems/1.8/gems/chriseppstein-compass-0.8.17/lib/compass/commands/watch_project.rb:18:in `perform'
/var/lib/gems/1.8/gems/chriseppstein-compass-0.8.17/lib/compass/commands/base.rb:15:in `execute'
/var/lib/gems/1.8/gems/chriseppstein-compass-0.8.17/lib/compass/commands/project_base.rb:19:in `execute'
/var/lib/gems/1.8/gems/chriseppstein-compass-0.8.17/lib/compass/exec.rb:242:in `do_command'
/var/lib/gems/1.8/gems/chriseppstein-compass-0.8.17/lib/compass/exec.rb:57:in `perform!'
/var/lib/gems/1.8/gems/chriseppstein-compass-0.8.17/lib/compass/exec.rb:40:in `run!'
/var/lib/gems/1.8/gems/chriseppstein-compass-0.8.17/bin/compass:8
/var/lib/gems/1.8/bin/compass:19:in `load'
/var/lib/gems/1.8/bin/compass:19
我查看了 stylesheet_updating.rb，它是一些猴子补丁，我不知道如何调试。
我发现参考的指南针入门是 2008 年的，这似乎没有帮助。
想法？