是否有可能要求Gemfile以外的文件？ [英] Is it possible to require files outside the Gemfile?

问题描述

例如，我正在开发一个gem，并且在开发过程中，我使用 pry 代替IRB，并使用 debugger 用于调试。但是，我不希望可能的贡献者必须安装它们（因为它们可能不需要它们）。我的第一个想法是把它们放在一个Bundler组中：

For example, I'm developing a gem, and while I'm developing, I use pry instead of IRB, and debugger for debugging. However, I don't want possible contributors to have to install them (because they may not need them). My first idea was to put them in a Bundler group:

source :rubygems

gemspec

group :extras do
  gem "pry"
  gem "debugger"
end

然后人们可以使用：

And then people could use:

$ bundle install --without extras

但我希望它是未安装的默认设置。在我的 Gemfile 中它们是 not ，但我仍然可以要求它们（如果它们存在于计算机上），那将是完美的。这个解决方案可以，因为我不在乎他们被锁定的版本。可以这样做吗？

But I want it to be a default that they're not installed. What would be perfect is that they're not in my Gemfile, but that I can still require them (if they exist on the computer). This solution would be ok because I don't care at which version they're locked. Can it be done?

推荐答案

您可以将基于环境变量的条件添加到Gemfile中。例如：

You could add a conditional based on environment variables into the Gemfile. Example:

source :rubygems

gemspec

if ENV['WITH_EXTRAS'] == '1'
  gem "pry"
  gem "debugger"
end

如果您将环境变量设置为'1'，则仅安装/加载gem。 WITH_EXTRAS = 1捆绑安装。

The gems are then only installed/loaded, if you set the environment variable to '1' e.g. WITH_EXTRAS=1 bundle install.

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