无法降级捆绑器

Question

我尝试安装我克隆的项目。当我执行“捆绑安装”时，我收到以下消息：

$ bundle install
Bundler could not find compatible versions for gem "bundler":
In Gemfile:
rails (= 3.0.0) ruby depends on
bundler (~> 1.0.0) ruby

Current Bundler version:
bundler (1.6.2)

This Gemfile requires a different version of Bundler.
Perhaps you need to update Bundler by running `gem install bundler`?

所以我做了以下事情：

gem uninstall bundler
gem install bundler --version '1.0.0'
Successfully installed bundler-1.0.0
1 gem installed

我执行“捆绑安装”，但一直收到相同的消息：

$ bundle install
Bundler could not find compatible versions for gem "bundler":
In Gemfile:
rails (= 3.0.0) ruby depends on
bundler (~> 1.0.0) ruby

Current Bundler version:
bundler (1.6.2)

This Gemfile requires a different version of Bundler.

Perhaps you need to update Bundler by running `gem install bundler`?

似乎我无法将捆绑程序降级到“1.0.0”版本，知道吗？

Answer 1

如果不需要多个版本的Bundler，可以卸载较新的版本：

$ gem uninstall bundler -v 1.6.2

如果您有多个版本，您还可以从捆绑器版本列表中进行选择：

$ gem uninstall bundler

Answer 2

您需要点击全局实例（根据需要更改已安装的 ruby​​ 版本）--

$ gem uninstall -i /Users/<user>/.rvm/gems/ruby-2.3.8@global bundler