class Bundler::DirectorySource

def add_spec(path, name, version, require_paths = %w(lib))
  raise DirectorySourceError, "already have a gem defined for '#{path}'" if @specs[path.to_s]
  @specs[path.to_s] = Gem::Specification.new do |s|
    s.name     = name
    s.version  = Gem::Version.new(version)
  end
end