注意:这个解决方案在Ubuntu 16.04, Ubuntu 17.04和Ubuntu 18.04上都能很好地工作。

尝试删除现有的cmdtest和yarn(这是*nix系统的遗留黑盒命令行工具的模块):

sudo apt remove cmdtest
sudo apt remove yarn

通过npm简单安装

npm install -g yarn

OR

sudo npm install -g yarn

现在纱线已经安装好了。执行命令。

yarn install sylius

我希望这能奏效。干杯!

编辑:

请记住重新打开终端以使更改生效。

为Ubuntu 16.04安装Yarn(不确定这是否会与14.04相同，因为它与zappee对17.04的回答略有不同)

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
curl -sL https://deb.nodesource.com/setup_9.x | sudo -E bash -
apt-get update
apt-get install nodejs
apt-get install yarn

然后从你安装sylius项目的地方(/var/www/mysite)

yarn install
yarn run gulp

这对我很有效

sudo yarn install

Run:

source ~/.profile 

再试一次

sudo npm install -g yarnpkg
npm WARN deprecated yarnpkg@0.15.1: Please use the `yarn` package instead of `yarnpkg`

这对我来说是可行的

sudo npm install -g yarn

我在Ubuntu 17.04上也遇到了同样的问题。

这个解决方案对我很有效:

sudo apt remove cmdtest
sudo apt remove 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-get update
sudo apt-get install yarn -y

then

yarn install

结果:

yarn install v1.3.2
warning You are using Node "6.0.0" which is not supported and may encounter bugs or unexpected behaviour. Yarn supports the following server range: "^4.8.0 || ^5.7.0 || ^6.2.2 || >=8.0.0"
info No lockfile found.
[1/4] Resolving packages...
[2/4] Fetching packages...
[3/4] Linking dependencies...
[4/4] Building fresh packages...

info Lockfile not saved, no dependencies.
Done in 0.20s.