Gem::Resolver::ActivationRequest#download

# File tmp/rubies/ruby-3.0.5/lib/rubygems/resolver/activation_request.rb, line 55
def download(path)
  Gem.ensure_gem_subdirectories path

  if @spec.respond_to? :sources
    exception = nil
    path = @spec.sources.find do |source|
      begin
        source.download full_spec, path
      rescue exception
      end
    end
    return path      if path
    raise  exception if exception

  elsif @spec.respond_to? :source
    source = @spec.source
    source.download full_spec, path

  else
    source = Gem.sources.first
    source.download full_spec, path
  end
end