Gopls: Using Sublime Text

Use the LSP package. After installing it using Package Control, do the following:

• Open the Command Palette
• Find and run the command LSP: Enable Language Server Globally
• Select the gopls item. Be careful not to select the similarly named golsp by mistake.

Finally, you should familiarise yourself with the LSP package's Settings and Key Bindings. Find them under the menu item Preferences > Package Settings > LSP.

Examples

Minimal global LSP settings, that assume gopls and go appear on the PATH seen by Sublime Text:

{
    "clients": {
        "gopls": {
             "enabled": true,
         }
    }
}

Global LSP settings that supply a specific PATH for finding gopls and go, as well as some settings for Sublime LSP itself:

{
    "clients": {
        "gopls": {
            "enabled": true,
            "env": {
                "PATH": "/path/to/your/go/bin",
            }
        }
    },
    // Recommended by https://agniva.me/gopls/2021/01/02/setting-up-gopls-sublime.html
    // except log_stderr mentioned there is no longer recognized.
    "show_references_in_quick_panel": true,
    "log_debug": true,
    // These two are recommended by LSP-json as replacement for deprecated only_show_lsp_completions
    "inhibit_snippet_completions": true,
    "inhibit_word_completions": true,
 }

LSP and gopls settings can also be adjusted on a per-project basis to override global settings.

{
    "folders": [
        {
            "path": "/path/to/a/folder/one"
        },
        {
            // If you happen to be working on Go itself, this can be helpful; go-dev/bin should be on PATH.
            "path": "/path/to/your/go-dev/src/cmd"
        }
     ],
    "settings": {
        "LSP": {
            "gopls": {
                // To use a specific version of gopls with Sublime Text LSP (e.g., to try new features in development)
                "command": [
                    "/path/to/your/go/bin/gopls"
                ],
                "env": {
                    "PATH": "/path/to/your/go-dev/bin:/path/to/your/go/bin",
                    "GOPATH": "",
                },
                "settings": {
                    "experimentalWorkspaceModule": true
                }
            }
        },
        // This will apply for all languages in this project that have
        // LSP servers, not just Go, however cannot enable just for Go.
        "lsp_format_on_save": true,
    }
}

Usually changes to these settings are recognized after saving the project file, but it may sometimes be necessary to either restart the server(s) (Tools > LSP > Restart Servers) or quit and restart Sublime Text itself.