编译

首先按照介绍中下载和安装。

go module介绍

module-cache

具体编译

只需要调用go build就好，命令会自动触发依赖下载，依赖会下载到 $GOPATH/pkg/mod

go build

go: downloading github.com/spf13/viper v1.7.1
go: downloading github.com/mitchellh/go-homedir v1.0.0
go: downloading go.uber.org/zap v1.16.0
go: downloading github.com/spf13/pflag v1.0.5
go: downloading github.com/pkg/errors v0.9.1