local util = require 'lspconfig.util'
local async = require 'lspconfig.async'
local mod_cache = nil

vim.lsp.start({
    name = "gopls",
    cmd = { "path/to/yout/gopls/executable" },
     root_dir = function(fname)
      if not mod_cache then
        local result = async.run_command { 'go', 'env', 'GOMODCACHE' }
        if result and result[1] then
          mod_cache = vim.trim(result[1])
        end
      end
      if fname:sub(1, #mod_cache) == mod_cache then
        local clients = vim.lsp.get_active_clients { name = 'gopls' }
        if #clients > 0 then
          return clients[#clients].config.root_dir
        end
      end
      return util.root_pattern('go.work', 'go.mod', '.git')(fname)
    end,
})