如果已安装插件，如何从 Vagrantfile 中检测? [英] how to detect from a Vagrantfile if a plugin has been installed?

问题描述

我想检测是否安装了插件，以便为用户添加一些有用的调试技巧.

I would like to detect if a plugin has been installed, so I can add some useful debugging tips for users.

我尝试了以下代码:

  if config.vbguest
    config.vbguest.auto_update = true
  else
    puts "installing vagrant-vbguest plugin is recommended"
  end

然而，Vagrant 输出 * Unknown configuration section 'vbguest'.

However, Vagrant outputs * Unknown configuration section 'vbguest'.

有没有办法检测插件是否已安装?

Is there a way I can detect whether a plugin has been installed?

推荐答案

Vagrant.has_plugin?(name) 如果插件已安装，则方法返回 true.

The Vagrant.has_plugin?(name) method returns true if a plugin has been installed.

示例:

unless Vagrant.has_plugin?("vagrant-some-plugin")
  raise 'some-plugin is not installed!'
end

原始来源:stackoverflow 答案.

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