feat(nvim): simplify go mod tidy

by **a lot**

modules/neovim/config/after/ftplugin/go.lua

@@ -1,65 +1,14 @@
-vim.opt_local.formatoptions:append("jno")
-
-local function restart(name)
-  local configs = require("lspconfig.configs")
-  local bufnr = vim.api.nvim_get_current_buf()
-  for _, client in
-    ipairs(vim.lsp.get_clients({
-      bufnr = bufnr,
-      name = name,
-    }))
-  do
-    vim.notify("Restarting " .. client.name .. "...")
-    client.stop()
-    vim.defer_fn(function()
-      configs[client.name].launch()
-    end, 500)
-  end
-end
+vim.opt_local.formatoptions:append("jo")
 
 local function tidy()
   vim.notify("Running `go mod tidy`...")
-  local uv = vim.loop
-  local stdout = uv.new_pipe(false)
-  local stderr = uv.new_pipe(false)
-  local function on_read(err, _)
-    assert(not err, err)
-  end
-
-  local function on_error(err, data)
-    assert(not err, err)
-    if data then
-      -- Just print errors, in case I notice in vim and want to debug
-      print(data)
-    end
-  end
-
-  local handle
-  handle, _ = uv.spawn(
-    "go",
-    {
-      args = { "mod", "tidy" },
-      stdio = { nil, stdout, stderr },
-      cwd = vim.fn.expand("%:h"),
-    },
-    vim.schedule_wrap(function()
-      stdout:read_stop()
-      stderr:read_stop()
-      stdout:close()
-      stderr:close()
-      if handle then
-        handle:close()
-      end
-      vim.schedule(function()
-        for _, name in ipairs({ "gopls", "golangci_lint_ls" }) do
-          restart(name)
-        end
-      end)
-    end)
-  )
-  uv.read_start(stdout, on_read)
-  uv.read_start(stderr, on_error)
-  uv.run("once")
+  local b = vim.api.nvim_get_current_buf()
+  local uri = vim.uri_from_bufnr(b)
+  local arguments = { { URIs = { uri } } }
+  vim.lsp.buf.execute_command({
+    command = "gopls.tidy",
+    arguments = arguments,
+  })
 end
 
 vim.api.nvim_create_user_command("GoModTidy", tidy, vim.tbl_extend("force", { desc = "go mod tidy" }, {}))