Golang environment construction [goenv]

What is goenv

goenv is Go's version control version control tool.

install goenv

For Homebrew

$ brew install goenv

For git goenv installation

$ git clone https://github.com/syndbg/goenv.git ~/.goenv

PATH goenv

Describe the path in the configuration file. (Description in the shell you are using)

$ echo 'export GOENV_ROOT="$HOME/.goenv"' >> ~/.zshrc
$ echo 'export PATH="$GOENV_ROOT/bin:$PATH"' >> ~/.zshrc
$ echo 'eval "$(goenv init -)"' >> ~/.zshrc

$ source ~/.zshrc   //Update changes

$ goenv -v
goenv 2.0.0beta11

If you can confirm the version, you are done.

Install Go

Display a list of versions that can be installed with the following command

$ goenv install -l
1.2.2
  1.3.0
  1.3.1
  〜
  1.15rc2
  1.15.1
  1.15.2

Install any version.

$ goenv install 1.**.*

Go PATH

`~/.zshrc`


$ echo 'export PATH="$GOROOT/bin:$PATH"' >> ~/.zshrc
$ echo 'export PATH="$PATH:$GOPATH/bin"' >> ~/.zshrc

$ source ~/.zshrc

Select the version to use

Set the installed version to global. Also, switching to a version.

$goenv global 1.**.*

$ go version
go version go1.**.* darwin/amd64

If you can confirm the version, you are done.

VS Code environment construction

First, install the Go plugin. スクリーンショット 2020-10-17 17.06.37.png

Tool installation

Next, we will install useful tools. First, open the settings and search for go.use language server to see if it is checked. After checking, open the display of all commands with `shift + ⌘ + P```, type Go: Install / Update Tools , and then gocode``` and `` gocode- Select and install other than gomod``` (since the code completion function is performed by gopls). If you don't see gopls here, try typing gopls in the search tab. スクリーンショット 2020-10-17 17.21.52.png

Optional settings.json settings

After installation, add the following to settings.json.

`settings.json`


"go.useLanguageServer": true,
    "[go]": {
        "editor.formatOnSave": true,
        "editor.codeActionsOnSave": {
            "source.organizeImports": true,
        },
        "editor.snippetSuggestions": "none"
    },
    "gopls": {
        "hoverKind": "SynopsisDocumentation",
        "usePlaceholders": true,
        "linkTarget": "pkg.go.dev",
        "staticcheck": false,        
        "completionDocumentation": true,        
        "completeUnimported": true,        
        "deepCompletion": true
    },
    "files.autoSave": "afterDelay"

that's all!