This is what happens with Clojars. It is possible to remove packages, but it requires a manual email to the admins, along with an explanation, e.g. published in

This is what happens with Clojars. It is possible to remove packages, but it requires a manual email to the admins, along with an explanation, e.g. published internal lib accidentally. This prevents scenarios like this, but also cases where people want to 'clean up' things they no longer need, even though others are depending on them.