start

# File lib/bundler/resolver.rb, line 45
    def start(requirements)
      @gem_version_promoter.prerelease_specified = @prerelease_specified = {}
      requirements.each {|dep| @prerelease_specified[dep.name] ||= dep.prerelease? }

      verify_gemfile_dependencies_are_found!(requirements)
      dg = @resolver.resolve(requirements, @base_dg)
      dg.map(&:payload).
        reject {|sg| sg.name.end_with?("\00"") }.
        map(&:to_specs).flatten
    rescue Molinillo::VersionConflict => e
      message = version_conflict_message(e)
      raise VersionConflict.new(e.conflicts.keys.uniq, message)
    rescue Molinillo::CircularDependencyError => e
      names = e.dependencies.sort_by(&:name).map {|d| "gem '#{d.name}'" }
      raise CyclicDependencyError, "Your bundle requires gems that depend"          " on each other, creating an infinite loop. Please remove"          " #{names.count > 1 ? "either " : ""}#{names.join(" or ")}"          " and try again."
    end