}
	base.ExitIfErrors()

	changed = r.updateBuildList(ctx, tentative)
	return changed
}

// disambiguate eliminates candidates from cs that conflict with other module
// versions that have already been resolved. If there is only one (unique)
// remaining candidate, disambiguate returns that candidate, along with
// an indication of whether that result interprets cs.path as a package
//

func tidyUnprunedRoots(ctx context.Context, mainModule module.Version, old *Requirements, pkgs []*loadPkg) (*Requirements, error) {
	var (
		// keep is a set of of modules that provide packages or are needed to
		// disambiguate imports.
		keep     []module.Version
		keptPath = map[string]bool{}

		// rootPaths is a list of module paths that provide packages directly
		// imported from the main module. They should be included as roots.

	// initialization.
	ready *ready

	// Underlying storage.Interface.
	storage storage.Interface

	// Expected type of objects in the underlying cache.
	objectType reflect.Type
	// Used for logging, to disambiguate *unstructured.Unstructured (CRDs)
	groupResource schema.GroupResource

	// "sliding window" of recent changes of objects and the current state.
	watchCache *watchCache
	reflector  *cache.Reflector

#endif

// Defines some utility macros.

// The GNU compiler emits a warning if nested "if" statements are followed by
// an "else" statement and braces are not used to explicitly disambiguate the
// "else" binding.  This leads to problems with code like:
//
//   if (gate)
//     ASSERT_*(condition) << "Some message";
//
// The "switch (0) case 0:" idiom is used to suppress this.

 private:
  mutex mu_;
  absl::flat_hash_map<uint64, int64> sequence_numbers_;
};

// Get a monotonic sequence numbers for a graph identified by its `fingerprint`.
// The sequence number is necessary to disambiguate clusters extracted from the
// same graph and when duplicate graphs exist within the same process.
int64_t GetNextClusterSequenceNumber(uint64 fingerprint) {

#endif

// Defines some utility macros.

// The GNU compiler emits a warning if nested "if" statements are followed by
// an "else" statement and braces are not used to explicitly disambiguate the
// "else" binding.  This leads to problems with code like:
//
//   if (gate)
//     ASSERT_*(condition) << "Some message";
//
// The "switch (0) case 0:" idiom is used to suppress this.

	if proxy != nil && proxy.SidecarScope != nil {
		return proxy.SidecarScope.servicesByHostname[hostname]
	}

	// SidecarScope shouldn't be null here. If it is, we can't disambiguate the hostname to use for a namespace,
	// so the selection must be undefined.
	for _, service := range ps.ServiceIndex.HostnameAndNamespace[hostname] {
		return service
	}

	// No service found
	return nil