ruby – 未安装gem依赖项

我确信这很明显,但我对ruby很新.我想使用rake / albacore来自动执行某些任务.我想打包它以使用bundler在我的构建服务器上使用.现在我想做一个使用mixlib- shellout冒充sys帐户的哑任务.为此,我有以下Gemfile：

source 'http://rubygems.org'
gem 'mixlib-shellout'
gem 'rake'

和以下rake文件：

require 'rubygems'
require 'bundler/setup'

require 'mixlib/shellout'

task :default do
    whomai = Mixlib::ShellOut.new("whoami.exe",:user => "username",:domain => "DOMAIN",:password => "password")
    whoami.run_command
end

我跑

bundle install

我只看到rake正在安装…… Gemfile.lock dep树中没有其他依赖项……这是正常的吗？

PS C:UsersBensrcruby_test> bundle install
Fetching gem metadata from http://rubygems.org/...........
Fetching gem metadata from http://rubygems.org/..
Resolving dependencies...
Installing rake (10.1.0)
Using bundler (1.3.5)
Your bundle is complete!
Use `bundle show [gemname]` to see where a bundled gem is installed.

然后我跑了

bundle exec rake

我得到了回报

rake aborted!
cannot load such file -- mixlib/shellout
C:/Users/Ben/src/ruby_test/rakefile.rb:4:in `require'
C:/Users/Ben/src/ruby_test/rakefile.rb:4:in `<top (required)>'
(See full trace by running task with --trace)

我使用的是ruby 2.0和bundler 1.3.5

任何帮助感激不尽.

source 'https://rubygems.org'
gemspec

Gem::Specification.new do |spec|
  spec.name          = GAME_NAME
  spec.version       = VERSION
  spec.authors       = AUTHORS
  spec.email         = EMAILS
  spec.summary       = SUMMARY
  spec.description   = DESCRIPTION
  spec.homepage      = HOMEPAGE

  spec.files         = Dir['rakefile.rb','*.gemspec']
  spec.files         += Dir['bin/**','lib/**/*.rb']

  spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
  spec.require_paths = ["lib"]

  spec.add_runtime_dependency "ruby-terminfo","~> 0.1"

  spec.add_development_dependency "bundler","~> 1.7"
  spec.add_development_dependency "rake","~> 10.0"
end