anchor.diff:      'icudtl.dat',
       'cpp_client_wrapper/',
     ],
  +  TargetPlatform.linux_x64: <String>[
  +    'libflutter_linux_glfw.so',
  +    'flutter_export.h',
  +    'flutter_messenger.h',
  +    'flutter_plugin_registrar.h',
  +    'flutter_glfw.h',
  +    'icudtl.dat',
  +    'cpp_client_wrapper_glfw/',
  +  ]
   };
   
   /// Copies desktop artifacts to local cache directories.
  
positive.code:     switch (targetPlatform) {
        case TargetPlatform.windows_x64:
          result.add(DevelopmentArtifact.windows);
          break;
        default:
      }
  
negative.code:     switch (platform) {
        case TargetPlatform.windows_x64:
          cacheStamp = 'windows-sdk';
          break;
        case TargetPlatform.linux_x64:
          cacheStamp = 'linux-sdk';
          break;
        default:
          throwToolExit('Unsupported target platform: $platform');
  