func TarballURL(version string) string { arch := system.PortageArch() p := path.Join(urlPath, arch, version, TarballName(version)) u := url.URL{Scheme: "https", Host: urlHost, Path: p} return u.String() }
func TarballName(version string) string { arch := system.PortageArch() return fmt.Sprintf("coreos-sdk-%s-%s.tar.bz2", arch, version) }