每一个dart package均需要有一个描述文件，在dart中，该文件默认为 pubspec.yaml. 该文件描述package name、dependencies等等信息。一般来说，常见的pubspec文件格式及内容如下：
name: newtify version: 1.2.3 description: >- Have you been turned into a newt? Would you like to be? This package can help. It has all of the newt-transmogrification functionality you have been looking for. homepage: https://example-pet-store.com/newtify documentation: https://example-pet-store.com/newtify/docs environment: sdk: ‘>=2.10.0 <3.0.0‘ dependencies: efts: ^2.0.4 transmogrify: ^0.4.0 dev_dependencies: test: ‘>=1.15.0 <2.0.0‘
pubspec支持的配置字段及详细信息，可以直接参考官网文档，这里就不做搬运工了：
https://dart.cn/tools/pub/pubspec
Dart package pubspec.yaml文件格式介绍
原文：https://www.cnblogs.com/codexspace/p/14380070.html