class Bundler::Plugin::Installer

def check_sources_consistency!(options)
  if options.key?(:git) && options.key?(:local_git)
    raise InvalidOption, "Remote and local plugin git sources can't be both specified"
  end
  # back-compat; local_git is an alias for git
  if options.key?(:local_git)
    Bundler::SharedHelpers.major_deprecation(2, "--local_git is deprecated, use --git")
    options[:git] = options.delete(:local_git)
  end
  if (options.keys & [:source, :git, :path]).length > 1
    raise InvalidOption, "Only one of --source, --git, or --path may be specified"
  end
  if (options.key?(:branch) || options.key?(:ref)) && !options.key?(:git)
    raise InvalidOption, "--#{options.key?(:branch) ? "branch" : "ref"} can only be used with git sources"
  end
  if options.key?(:branch) && options.key?(:ref)
    raise InvalidOption, "--branch and --ref can't be both specified"
  end
end