cannot load such file -- treetop (LoadError)

[turboladen]

I'm running MRI 1.9.3. I ran $ gem install laser -v 0.7.0.pre1 --pre then $ laser --help and get:

/Users/Steveloveless/.rvm/gems/ruby-1.9.3-p0/gems/laser-0.7.0.pre1/lib/laser.rb:26:in `require': cannot load such file -- treetop (LoadError)
from /Users/Steveloveless/.rvm/gems/ruby-1.9.3-p0/gems/laser-0.7.0.pre1/lib/laser.rb:26:in `<top (required)>'
from /Users/Steveloveless/.rvm/gems/ruby-1.9.3-p0/gems/laser-0.7.0.pre1/bin/laser:6:in `require'
from /Users/Steveloveless/.rvm/gems/ruby-1.9.3-p0/gems/laser-0.7.0.pre1/bin/laser:6:in `<top (required)>'
from /Users/Steveloveless/.rvm/gems/ruby-1.9.3-p0/bin/laser:19:in `load'
from /Users/Steveloveless/.rvm/gems/ruby-1.9.3-p0/bin/laser:19:in `<main>'

I then $ gem install treetop, then $ laser and still get the same LoadError.

RubyGems Environment:
  - RUBYGEMS VERSION: 1.8.10
  - RUBY VERSION: 1.9.3 (2011-10-30 patchlevel 0) [x86_64-darwin11.2.0]
  - INSTALLATION DIRECTORY: /Users/Steveloveless/.rvm/gems/ruby-1.9.3-p0
  - RUBY EXECUTABLE: /Users/Steveloveless/.rvm/rubies/ruby-1.9.3-p0/bin/ruby
  - EXECUTABLE DIRECTORY: /Users/Steveloveless/.rvm/gems/ruby-1.9.3-p0/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-11
  - GEM PATHS:
     - /Users/Steveloveless/.rvm/gems/ruby-1.9.3-p0
     - /Users/Steveloveless/.rvm/gems/ruby-1.9.3-p0@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => true
     - :bulk_threshold => 1000
     - :sources => ["http://rubygems.org/"]
     - "gem" => "--no-ri --no-rdoc"
  - REMOTE SOURCES:
     - http://rubygems.org/

[turboladen]

It seems that laser picked up on the Gemfile that was in my current local directory. I hadn't included laser in the Gemfile yet, so it wasn't finding the treetop dep. I didn't expect this, so it might be nice to document. I suppose this isn't a bug though.