build_runner 更新后停止工作

Question

当我尝试运行

dart run build_runner build --delete-conflicting-output

时，我有以下输出：

Failed to build build_runner:build_runner:
../../../.pub-cache/hosted/pub.dev/macros-0.1.2-main.4/lib/src/bootstrap.dart:5:1: Error: Error when reading '../../../fvm/versions/stable/bin/cache/dart-sdk/pkg/_macros/lib/src/bootstrap.dart': No such file or directory
export 'package:_macros/src/bootstrap.dart';
^
../../../.pub-cache/hosted/pub.dev/macros-0.1.2-main.4/lib/src/executor.dart:5:1: Error: Error when reading '../../../fvm/versions/stable/bin/cache/dart-sdk/pkg/_macros/lib/src/executor.dart': No such file or directory
export 'package:_macros/src/executor.dart';
^
../../../.pub-cache/hosted/pub.dev/macros-0.1.2-main.4/lib/src/executor/isolated_executor.dart:5:1: Error: Error when reading '../../../fvm/versions/stable/bin/cache/dart-sdk/pkg/_macros/lib/src/executor/isolated_executor.dart': No such file or directory
export 'package:_macros/src/executor/isolated_executor.dart';
^
../../../.pub-cache/hosted/pub.dev/macros-0.1.2-main.4/lib/src/executor/multi_executor.dart:5:1: Error: Error when reading '../../../fvm/versions/stable/bin/cache/dart-sdk/pkg/_macros/lib/src/executor/multi_executor.dart': No such file or directory
export 'package:_macros/src/executor/multi_executor.dart';
^
../../../.pub-cache/hosted/pub.dev/macros-0.1.2-main.4/lib/src/executor/process_executor.dart:5:1: Error: Error when reading '../../../fvm/versions/stable/bin/cache/dart-sdk/pkg/_macros/lib/src/executor/process_executor.dart': No such file or directory
export 'package:_macros/src/executor/process_executor.dart';
^
../../../.pub-cache/hosted/pub.dev/macros-0.1.2-main.4/lib/src/executor/serialization.dart:5:1: Error: Error when reading '../../../fvm/versions/stable/bin/cache/dart-sdk/pkg/_macros/lib/src/executor/serialization.dart': No such file or directory
export 'package:_macros/src/executor/serialization.dart';
^
../../../.pub-cache/hosted/pub.dev/macros-0.1.2-main.4/lib/macros.dart:5:1: Error: Error when reading '../../../fvm/versions/stable/bin/cache/dart-sdk/pkg/_macros/lib/src/api.dart': No such file or directory
export 'package:_macros/src/api.dart';
^
../../../.pub-cache/hosted/pub.dev/macros-0.1.2-main.4/lib/src/executor/introspection_impls.dart:5:1: Error: Error when reading '../../../fvm/versions/stable/bin/cache/dart-sdk/pkg/_macros/lib/src/executor/introspection_impls.dart': No such file or directory
export 'package:_macros/src/executor/introspection_impls.dart';
^
../../../.pub-cache/hosted/pub.dev/macros-0.1.2-main.4/lib/src/executor/response_impls.dart:5:1: Error: Error when reading '../../../fvm/versions/stable/bin/cache/dart-sdk/pkg/_macros/lib/src/executor/response_impls.dart': No such file or directory
export 'package:_macros/src/executor/response_impls.dart';
^
../../../.pub-cache/hosted/pub.dev/macros-0.1.2-main.4/lib/src/executor/exception_impls.dart:5:1: Error: Error when reading '../../../fvm/versions/stable/bin/cache/dart-sdk/pkg/_macros/lib/src/executor/exception_impls.dart': No such file or directory
export 'package:_macros/src/executor/exception_impls.dart';
^
../../../.pub-cache/hosted/pub.dev/macros-0.1.2-main.4/lib/src/executor/remote_instance.dart:5:1: Error: Error when reading '../../../fvm/versions/stable/bin/cache/dart-sdk/pkg/_macros/lib/src/executor/remote_instance.dart': No such file or directory
export 'package:_macros/src/executor/remote_instance.dart';
^
../../../.pub-cache/hosted/pub.dev/analyzer-6.7.0/lib/src/summary2/macro.dart:24:10: Error: Type 'macro.MacroInstanceIdentifier' not found.
  Future<macro.MacroInstanceIdentifier> instantiate({
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../../../.pub-cache/hosted/pub.dev/analyzer-6.7.0/lib/src/summary2/macro.dart:28:14: Error: Type 'macro.Arguments' not found.
    required macro.Arguments arguments,
             ^^^^^^^^^^^^^^^
../../../.pub-cache/hosted/pub.dev/analyzer-6.7.0/lib/src/summary2/macro.dart:35:14: Error: Type 'macro.ExecutorFactoryToken' not found.
  late final macro.ExecutorFactoryToken _executorFactoryToken;
             ^^^^^^^^^^^^^^^^^^^^^^^^^^
../../../.pub-cache/hosted/pub.dev/analyzer-6.7.0/lib/src/summary2/macro.dart:58:10: Error: Type 'macro.MacroInstanceIdentifier' not found.
  Future<macro.MacroInstanceIdentifier> instantiate({
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../../../.pub-cache/hosted/pub.dev/analyzer-6.7.0/lib/src/summary2/macro.dart:62:14: Error: Type 'macro.Arguments' not found.
    required macro.Arguments arguments,
             ^^^^^^^^^^^^^^^
../../../.pub-cache/hosted/pub.dev/analyzer-6.7.0/lib/src/summary2/macro.dart:116:14: Error: Type 'macro.ExecutorFactoryToken' not found.
  late final macro.ExecutorFactoryToken _executorFactoryToken;
             ^^^^^^^^^^^^^^^^^^^^^^^^^^
...

build_runner：^2.4.12 以及最新版本的所有生成器injectable_generator、retrofit_generator、json_serialized 和drift_dev。

我尝试清理 dart 缓存但没有成功。

Answer 1

这里的主要问题是缺少作为 Dart SDK 一部分的文件（第一个通道错误，

bootstrap.dart

等）。更新后可能会发生这种情况，因为 Dart SDK 和二进制文件不会立即下载。您只需运行

flutter doctor

即可下载依赖项。在实际

doctor

输出之前，您将在终端中看到类似的内容：

~ flutter doctor
Downloading Darwin arm64 Dart SDK from Flutter engine b8800d88be4866db1b15f8b954ab2573bba9960f...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
 97  201M   97  197M    0     0  11.3M      0  0:00:17  0:00:17 --:--:-- 12.2M

之后，这些文件将可用。