func isRuntimeDepPkg(pkg string) bool {
	switch pkg {
	case "runtime",
		"sync/atomic",          // runtime may call to sync/atomic, due to go:linkname
		"internal/abi",         // used by reflectcall (and maybe more)
		"internal/bytealg",     // for IndexByte
		"internal/chacha8rand", // for rand
		"internal/cpu":         // for cpu features
		return true
	}
	return strings.HasPrefix(pkg, "runtime/internal/") && !strings.HasSuffix(pkg, "_test")
}