I've a Ruby 1.9.2 and Rails 3.0.9 development environment. When I run the gem "metrical" on my application, I get the following errors:
** Running the specs/tests in the [test] environment
Analyzing: 100% |oooooooooooooooooooooooooooooooooooooooooo| Time: 00:00:00
/Users/tester/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/emitter.rb:17:in `end_document': undefined method `write' for #<Syck::Emitter:0x000001028d2388> (NoMethodError)
Anyone else seen this issue? I'm out of ideas for the error.
The simplest solution is to set the RUBYOPT environment variable when you run metrical, so instead of metrical you type:
I am doing that and it's all working fine. This blog post figured it out for me: http://excid3.com/blog/undefined-method-write-for-syckemitter/ (possibly a bit simpler than hacking into metric_fu, until they fix this).