neovim/lua/plugins/go.lua

require("go").setup()
local format_sync_grp = vim.api.nvim_create_augroup("GoImport", {})
vim.api.nvim_create_autocmd("BufWritePre", {
	pattern = "*.go",
	callback = function()
		require("go.format").goimport()
	end,
	group = format_sync_grp,
})