anchor.diff:      return package;
     }
   
  -  String toString() => '$name @ $path';
  +  String toString() => '$name @ $version';
   
     int compareTo(VizPackage other) {
       return name.compareTo(other.name);
  
positive.code: 
      var deps = Dependency.getDependencies(pubspecMap);
  
      var package = new VizPackage._(path, packageName, version, deps);
  
      if (flagOutdated) {
        await package.updateLatestVersion();
  
negative.code: import 'util.dart';
  
  class VizPackage extends Comparable {
    final String name;
    final Version version;
    final Set<Dependency> dependencies;
  