Yanking a Ruby Gem
Yanking (unpublishing) a Ruby gem is something that has to happen from time to time. Maybe your library has a known vulnerability. Maybe you pushed a gem by mistake. Sometimes the best code is no code.
Here's how you permanently yank a gem published to Rubygems:
$ gem yank <gemname> -v <version>
What are the side effects? If somebody was locked to your exact version, they would not be able to download that package again and would have to upgrade or downgrade. Consider that when deciding whether to yank.
Policy change about gem yank / CLI reference
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