tenderlove/nokogiri — comment on commit 7f17a643a05ca381d65131515b54d4a3a61ca2e1
File:  line 0
By brodock:

By removing .gemspec it prevents nokogiri from being included in a Gemfile pointing it directly to git repository. This has a major impact on everybody's development process as if, for some reason, a project needs to include a fixed, but not yet released version of nokogiri, it has to fork, regenerate a gemspect and then point it to their very own repository. It takes a lot of time and has no obvious benefit, so I suggest having it enabled again.