Yarn ERROR：没有场景；必须至少有一个

Question

我尝试安装Yarn，当我使用

yarn

命令时，我得到：

00h00m00s 0/0: : ERROR: There are no scenarios; must have at least one.

我的

yarn --version

是

0.32

。为什么不起作用？

Answer 1

看起来我试图执行错误的纱线，因为只需在我的 Ubuntu 18.04 上运行

sudo apt install yarn

就可以从 cmdtest 获得 yarn。

所以我通过卸载它解决了：

sudo apt remove yarn

并按照官方网站的解释安装它，在我的情况下（Ubuntu 18.04）如下：

curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list

sudo apt update && sudo apt install yarn

yarn

Answer 2

你买错了纱线。您正在执行的纱线来自

cmdtest

包。首先卸载 cmdtest 应该可以解决这个问题：

sudo apt remove cmdtest

卸载后，运行以下命令以正确安装yarn：

curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
sudo apt update
sudo apt install yarn

Answer 3

安装时应使用的真实名称是yarnpkg

sudo apt install yarnpkg

这就是解决方案。

Answer 4

逐步尝试此操作。这对我有用。

sudo apt remove yarn
sudo apt install curl
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
sudo apt update
sudo apt install yarn

Answer 5

sudo npm install -g yarn

然后打开一个新的终端窗口并输入

yarn --version

Answer 6

看起来您试图执行错误的纱线，因为只需在您的

Ubuntu 18.04

上运行 sudo apt install yarn 就会给您来自

cmdtest

的纱线。

要解决此问题，您应该从其官方网站https://yarnpkg.com/getting-started/install安装yarn。我建议在上面的网站上阅读更多有关纱线的信息

1. 要传输可以从curl使用的数据

   curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
   

   输出如下所示：

   OK
   

2. 要知道数据是否已传输，您可以使用 echo 命令（这是 linux 内置命令）显示该文本/字符串

   echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
   

   输出也如下所示：

   deb https://dl.yarnpkg.com/debian/ stable main
   

3. 要从所有配置的源下载包信息，请运行以下命令：

   sudo apt update && sudo apt install yarn
   

4. 此阶段完成后，通过

   检查纱线版本

   yarn --version
   

   输出看起来像这样

   1.22.18
   

或者你可以通过npm安装yarn

npm install -g yarn

Answer 7

升级到nodejs后我开始收到此错误。 修复这些错误的步骤是：

1. sudo apt remove cmdtest

2. sudo apt autoremove

3. sudo npm install -g yarn

Answer 8

只是更新

curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/yarnpkg.gpg
sudo apt update && sudo apt install yarn
yarn

Answer 9

它是名称“yarnpkg”，而不是“yarn”

#which yarn
/usr/bin/yarn

# which yarnpkg
/usr/bin/yarnpkg

#yarn --version
0.32+git

# yarnpkg --version
1.22.10


# cat /usr/bin/yarn

#!/usr/bin/python3
# Copyright 2013  Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# =*= License: GPL-3+ =*=


import cliapp
...




# cat /usr/bin/yarnpkg 


#!/usr/bin/env node

/* eslint-disable no-var */
/* eslint-disable flowtype/require-valid-file-annotation */
'use strict';

var ver = process.versions.node;
var majorVer = parseInt(ver.split('.')[0], 10);

if (majorVer < 4) {
  console.error('Node version ' + ver + ' is not supported, please use Node.js 4.0 or higher.');
  process.exit(1); // eslint-disable-line no-process-exit
} else {
  try {
    require(__dirname + '/../lib/v8-compile-cache.js');
  } catch (err) {
    // We don't have/need this on legacy builds and dev builds
  }

  // Just requiring this package will trigger a yarn run since the
  // `require.main === module` check inside `cli/index.js` will always
  // be truthy when built with webpack :(
  // `lib/cli` may be `lib/cli/index.js` or `lib/cli.js` depending on the build.
  var cli = require(__dirname + '/../lib/cli');
  if (!cli.autoRun) {
    cli.default().catch(function(error) {
      console.error(error.stack || error.message || error);
      process.exitCode = 1;
    });
  }
}

Answer 10

建议使用

NPM

来安装yarn。 要实现这一目标，请执行以下操作：

• npm install --global yarn

• yarn --version

了解更多

Answer 11

步骤 1 -> sudo apt 删除 cmdtest

第2步 -> 下载yarnpkg密钥 curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add - 输出-OK

第 3 步 -> 下载 deb 纱线列表 echo“deb https://dl.yarnpkg.com/debian/稳定主”| sudo tee /etc/apt/sources.list.d/yarn.list

第4步 -> 更新并安装yarn sudo apt更新&& sudo apt安装yarn

第 5 步 -> 检查纱线版本 纱线--版本 输出 - 1.22.19

Answer 12

sudo apt install --no-install-recommends 纱线