无法在 Gemfile 中列出的或此计算机上可用的任何 Gem 源中找到 gem 'wdm (>= 0.1.0) x64-mingw32'

Question

当我在Git Bash上运行Jekyll服务时，我得到以下警告:

Please add the following to your Gemfile to avoid polling for changes:
gem 'wdm', '>= 0.1.0' if Gem.win_platform?

添加Gemfile后，我得到另一个错误消息。

Could not find gem 'wdm (>= 0.1.0) x64-mingw32' in any of the gem sources
listed in your Gemfile or available on this machine.

我尝试安装Ruby Devkit来解决这个问题，但我最终只得到以下错误信息。

$ ruby dk.rb install
[INFO] Skipping existing gem override for 'C:/Ruby200-x64'
[WARN] Skipping existing DevKit helper library for 'C:/Ruby200-x64'
$ gem install json --platform=ruby
ERROR: Error installing json:
The 'json' native gem requires installed build tools.
Please update your PATH to include build tools or download the DevKit
from 'http://rubyinstaller.org/downloads' and follow the instructions
at 'http://github.com/oneclick/rubyinstaller/wiki/Development-Kit'

Answer 1

您需要在将wdm gem添加到您的Gemfile后运行bundle install来下载它

Answer 2

似乎你以前安装过devkit，它跳过了新的安装，尝试

ruby dk.rb install --force

Answer 3

下载后需要将wdm添加到bundle中。试着

bundle add wdm