jekyll

/jekyll-3.6.3/lib/jekyll/tags/include.rb:193: warning: Using the last argument as keyword parameters is deprecated

https://github.com/jekyll/jekyll/issues/8049

gem “jekyll”, github: “jekyll/jekyll”

EventMachine是Reactor模式的一个高性能实现
https://blog.csdn.net/zdq0394123/article/details/7901932

You have requested:
jekyll ~> 4.1.0

The bundle currently has jekyll locked at 3.6.3.
Try running bundle update jekyll

If you are updating multiple gems in your Gemfile at once,
try passing them all to bundle update
Run bundle install to install missing gems.

Bundler could not find compatible versions for gem “jekyll”:
In Gemfile:
jekyll (~> 4.1.0)

jekyll-feed (~> 0.6) was resolved to 0.11.0, which depends on

  jekyll (~> 3.3)

bundle update jekyll-feed

sudo gem install eventmachine -v ‘1.2.7’ –source ‘https://gems.ruby-china.com/’

An error occurred while installing eventmachine (1.2.7), and Bundler cannot continue.
Make sure that gem install eventmachine -v '1.2.7' --source 'https://gems.ruby-china.com/' succeeds before bundling.