在barback上不兼容的版本限制：

Question

Dart Editor版本1.10.0.release（STABLE） Dart SDK版本1.10.0

pubspec.yaml

--- 19:11:03 Running pub get on C:\Users\Toshiba\Documents\Dart\project ... ---
Pub get failed, [1] Resolving dependencies...
Incompatible version constraints on barback:
- observe 0.9.1+1 depends on version >=0.9.0 <0.11.0
- pub itself depends on version >=0.13.0 <0.15.3

** Warning: Application may fail to run since packages did not get installed.Try running pub get again. **

运行pub get

observe

我无法理解我在项目中使用的pub和{{1}}本身之间的联系。 你有什么想法吗？