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Auto-complete Go on VIM using Coc

posted at 09-07-2020

Well, we gonna start touching some Go in my company. As I'm trying to use VIM as much as I can, I decided to use it every time I touch a Go file.

So I started setting up my environment for it, first I needed to setup my GOPATH into my PATH environment variable, so:

export PATH=$PATH:$GOPATH/bin

# If your $GOPATH variable is empty, just do it:  
export GOPATH=$HOME/go

Here, for the auto-complete stuff, we gonna use gopls (pronunciation: "go please"), it's the official language server for the Go language.

For installation you need to run the line below:

GO111MODULE=on go get

To see if it's working properly just try run gopls --help. It should be working because we already added the $GOPATH to $PATH environment variable, if it's not working, take a look on your $HOME/go/bin directory, if the gopls file is there, then it might be a problem pointing the go path to the path variable, if it's not there, might be a problem on the installation above.

Now it's time to setup coc, inside vim, just run :CocConfig. If you don't have any language server configured yet, just paste it there:

  "languageserver": {
   "golang": {
      "command": "gopls",
      "rootPatterns": ["go.mod", ".vim/", ".git/", ".hg/"],
      "filetypes": ["go"],
      "initializationOptions": {
        "usePlaceholders": true

If you already have a language server there, just add the "golang" node inside "languageserver".

The result in a Go file will be something like the one below:

Auto Complete for Go on VIM with Coc