不良状态：无法生成包图，未找到 /.dart_tool/flutter_gen/pubspec.yaml`

Question

当我使用 auto_route 包时，运行 build_runner 时出现此错误：

Unhandled exception:
Bad state: Unable to generate package graph, no `/Users/myuser/AndroidStudioProjects/myproject/.dart_tool/flutter_gen/pubspec.yaml` found.
#0      _pubspecForPath (package:build_runner_core/src/package_graph/package_graph.dart:268:5)
#1      _parsePackageDependencies (package:build_runner_core/src/package_graph/package_graph.dart:242:21)
#2      PackageGraph.forPath (package:build_runner_core/src/package_graph/package_graph.dart:120:33)
<asynchronous suspension>
#3      main (file:///Users/myuser/.pub-cache/hosted/pub.dev/build_runner-2.4.8/bin/build_runner.dart:27:30)
<asynchronous suspension>

Answer 1

将此包添加到 pubspec.yaml 中的 dev_dependencies 中：

dev_dependencies:
  flutter_test:
    sdk: flutter
  
  flutter_gen: ^version