* bits.
   *
   * @param h hash code
   */
  static int rehash(int h) {
    // Spread bits to regularize both segment and index locations,
    // using variant of single-word Wang/Jenkins hash.
    // TODO(kevinb): use Hashing/move this to Hashing?
    h += (h << 15) ^ 0xffffcd7d;
    h ^= (h >>> 10);
    h += (h << 3);
    h ^= (h >>> 6);

		return p.ImportPath + " [" + p.Internal.ForMain + "]"
	}
	return p.ImportPath
}

// IsTestOnly reports whether p is a test-only package.
//
// A “test-only” package is one that:
//   - is a test-only variant of an ordinary package, or
//   - is a synthesized "main" package for a test binary, or
//   - contains only _test.go files.
func (p *Package) IsTestOnly() bool {
	return p.ForTest != "" ||