flutter - 因为 sdk 中的 flutter_driver 的每个版本都依赖于 crypto 2.1.5 而 Cruise 依赖于 crypto 3.0.0，所以 sdk 中的 flutter_driver 是被禁止的

Question

当我在 Fedora 32 中编译我的项目时，显示此错误:

Running "flutter pub get" in cruise-open...
Because every version of flutter_driver from sdk depends on crypto 2.1.5 and Cruise depends on crypto 3.0.0, flutter_driver from sdk is forbidden.
So, because Cruise depends on flutter_driver any from sdk, version solving failed.
pub get failed (1; So, because Cruise depends on flutter_driver any from sdk, version solving failed.)

这是我的 pubspec.yaml文件:

name: Cruise
description: A RSS article read Flutter application.

publish_to: 'none' # Remove this line if you wish to publish to pub.dev

version: 1.0.0

environment:
  sdk: ">=2.7.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  flutter_localizations:
    sdk: flutter
  intl: 0.17.0
  meta: ^1.1.8
  flutter_svg: 0.19.0
  logger: 0.9.4
  scoped_model: ^1.1.0
  shrine_images: ^1.1.2
  flare_dart: 2.3.4
  flare_flutter: ^2.0.2
  vector_math: ^2.0.8
  collection: ^1.14.0
  package_info: ^0.4.0
  fluttertoast: 7.1.6
  flutter_staggered_grid_view: ^0.3.0
  adaptive_breakpoints: ^0.0.2
  cupertino_icons: 1.0.0
  http: ^0.12.0+2
  flutter_icons: ^1.0.0
  timeago: 2.0.26
  animations: 1.1.2
  flutter_hooks: ^0.12.0
  share: ^0.6.4+3
  shimmer: 1.1.1
  crypto: 3.0.0
  url_launcher: 5.5.0
  uni_links: 0.4.0
  flutter_html: 1.2.0
  shared_preferences: ^0.5.8
  state_notifier: ^0.5.0
  flutter_secure_storage: 3.3.3
  flutter_slidable: "^0.5.5"
  hive: ^1.4.1+1
  pull_to_refresh: 1.6.3
  intl_phone_number_input: ^0.5.0
  dio: 3.0.10
  fish_redux: 0.3.4
  hive_flutter: 0.3.1

dev_dependencies:
  flutter_test:
    sdk: flutter
  flutter_driver:
    sdk: flutter
  test:
  path:
  args:
  grinder: ^0.8.0
  pedantic: ^1.9.0
  string_scanner: ^1.0.5

# The following section is specific to Flutter.
flutter:

  # The following line ensures that the Material Icons font is
  # included with your application, so that you can use the icons in
  # the material Icons class.
  uses-material-design: true
  generate: true

我该怎么做才能解决它？这是 flutter 版本信息:

[dolphin@MiWiFi-R4CM-srv]~/Documents/GitHub/cruise-open% flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.0.1, on Linux, locale en_US.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
[✓] Chrome - develop for the web
[✓] Android Studio (version 4.0)
[✓] IntelliJ IDEA Community Edition (version 2020.2)
[✓] VS Code (version 1.54.1)
[✓] Connected device (2 available)

• No issues found!

Answer 1

这是因为 flutter_driver的 null-safety 迁移没有及时完成。
即使它现在已经修复，它也不会在 6 月初左右(或下一个稳定 channel 发布)在稳定 channel 中发布。
同时，我们有两种解决方案:

使用 beta或 dev尽快获得修复的 channel 。

使用 dependency_overrides在您的 pubspec.yaml继续使用 flutter_driver使用您的 Flutter 2(同时停留在 stable channel 中)。

我更喜欢第二个选择。所以我编辑了我的 pubspec.yaml像这样:

dependencies:
  # my list of deps...

dev_dependencies:
  flutter_driver:
    sdk: flutter
  test: any
  # my other dev_deps...

# add this section👇👇👇
dependency_overrides:
  convert: ^3.0.0
  crypto: ^3.0.0
# add this section 👆👆👆

这个解决方案对我有用。我现在可以安装 flutter_driver . 😄
这是我的引用: https://github.com/flutter/flutter/issues/77282