1. Open the package file you downloaded and follow the prompts to install Go.

   The package installs the Go distribution to /usr/local/go. The package should put the /usr/local/go/bin directory in your PATH environment variable. You may need to restart any open Terminal sessions for the change to take effect.

2. Verify that you've installed Go by opening a command prompt and typing the following command:

   $ go version
   

3. Confirm that the command prints the installed version of Go.

3 配置GOROOT、GOPATH、PATH
编辑文件

export GOROOT="/usr/local/Cellar/go/1.15.3/libexec"
export GOPATH="/Users/apple/doc/GoProjects"
export PATH="/Users/apple/doc/GoProjects/bin:$PATH"
export GO111MODULE=on
export GOPROXY=https://mirrors.aliyun.com/goproxy/
 

GOROOT
go 安装目录，此处brew安装，进入go目录之后可看到bin目录是在libexec下面
如果是源码，可以按照习惯直接复制到/usr/local/go下面，那么此时GOROOT 为/usr/local/go

GOPATH
go的工作目录,即写代码位置。也可以配置$HOME来配置。

安装上述编辑好.bash_profile文件好保存退出，执行命令

source.  .bash_profile

# 亲测 goproxy.io 有些包不全
go env -w GO111MODULE=on
go env -w GOPROXY=https://goproxy.io,direct

# 设置不走 proxy 的私有仓库，多个用逗号相隔（可选）
go env -w GOPRIVATE=*.oa.com

# Go 给的默认值，Q 外没问题
go env -w GOPROXY=direct
go env -w GOSUMDB=off

# GOPROXY CN 亲测包全一点
go env -w GO111MODULE=on
go env -w GOPROXY=https://goproxy.cn,direct

liteide配置：

http://liteide.org/en/doc/install/