Does 'gem list' go by .gemspec only?

Hello, Ruby beginner here trying to learn as much as I can.

Does gem list use the GEM_PATH to find the actual install folders or
does it just look for the .gemspec files?

I’ve noticed if I delete a gem’s install folder manually and run gem list, it will still show up in the list, but trying to use the gem in
anyway (including gem uninstall) returns an error until I delete the
associated .gemspec file as well. After that, the gem will no longer
show up in gem list.

Thanks in advance for any clarification.

Iirc it uses the spec files in gem_path/specifications.

Why manually delete?

I jacked up some rvm gemsets and was just kicking the tires to get a
better handle on how ruby-gems, gemsets and bundler interact with each
other in the context of rvm.

Now I’m curious as to why it looks for the .gemspec and not the wrapper.

Because the gemspec knows everything there is to know about the gem.

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