wtfos dependency

[stylesuxx]

I think all contributed packages should have a dependency to the wtfos-system package. This allows us to uninstall wtfos cleanly by only uninstalling wtfos-system, triggering the removal of all depending packages.

For most packages it will probably not matter since they will only "live" in the /blackbox/opt/* env, but in case something needs to write to some external files this would be a good option for a proper cleanup.

If you think this makes sense, I'd add it to the Readme and the example repo. Further I could also check this dependency when building the package index.

[j005u]

I would argue that since uninstall also removes the loop mounted /system, packages couldn't really have modified anything important that would persist.

There's an argument to be made to have deleting the contents of /opt/ be an optional manual step. But I had considered the same dependency before.

Open to changing my mind, would like to hear if anyone else has anything to say on the subject.