因为sdk的flutter_driver每个版本都依赖crypto 2.1.5，Cruise依赖crypto 3.0.0，所以sdk的flutter_driver是被禁止的答案

【问题标题】：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因为sdk的flutter_driver每个版本都依赖crypto 2.1.5，Cruise依赖crypto 3.0.0，所以sdk的flutter_driver是被禁止的
【发布时间】：2021-06-05 11:50:51
【问题描述】：

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

我应该怎么做才能解决它？这是颤振版本信息：

[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!

【问题讨论】：

你可以试试不设置pubspec.yaml中的crypto的版本吗？像这样：crypto:。这应该可以消除版本冲突。
你找到解决办法了吗？
@Andrej 这是因为flutter_driver依赖于加密：2.1.5
我删除了 pubspec.yaml @user3875913 中的flutter_driver
啊，是的，你知道有没有办法 fork 库？

标签： flutter

【解决方案1】：

发生这种情况是因为 flutter_driver 的 null-safety 迁移没有及时完成。

尽管现在已经修复，但要到 6 月初左右（或下一个稳定频道版本）才会在稳定频道中发布。

同时，我们有两种解决方案：

使用beta 或dev 频道尽快修复。
在您的pubspec.yaml 中使用dependency_overrides 以继续在您的Flutter 2 中使用flutter_driver（同时留在stable 频道中）。

我更喜欢第二种选择。所以我像这样编辑我的pubspec.yaml：

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。 ?

这是我的参考：https://github.com/flutter/flutter/issues/77282

【讨论】：

【解决方案2】：

通过将 pubspec.yaml 中的 sdk 约束更改为

environment:
sdk: ">=2.12.0 <3.0.0"

并从flutters stable频道改为master频道

【讨论】：

【解决方案3】：

将crypto 添加到依赖项并运行flutter pub get：

dependencies:
  crypto: ^3.0.0

【讨论】：

问题是 flutter_driver 需要 crypto: ^2.1.5 并且会失败并出现 crypto: ^3.0.0 尽管加密 3 是 Flutter 2 的空安全版本。
很高兴知道。 Tnx 注意！

【解决方案4】：

使用下一个方法。但要小心，测试可能会中断。在 pubspec.yaml 中的依赖项部分之后插入下一个代码

dependency_overrides:
  crypto: 3.0.0

【讨论】：