Fair 集成报错 about fair HOT 1 OPEN

fair 在pub 没有更新，目前可以先clone 到本地，然后进行本地的依赖配置，可参考如下的配置：

environment:
sdk: ">=2.7.0 <3.0.0"

dependencies:
flutter:
sdk: flutter
fair:
path: ../fair/fair

cupertino_icons: ^1.0.2

dev_dependencies:
flutter_test:
sdk: flutter
build_runner: ^1.4.0
fair_compiler:
path: ../fair/compiler

dependency_overrides:
fair_version:
path: ../fair/flutter_version/flutter_2_0_6

flutter:

uses-material-design: true
assets:
- assets/images/
- assets/bundle/

from fair.