Immortal Pure-Python Extension Plugins

Hi KNIMErs!

In a recent call with @gab1one, we briefly touched upon a topic that we decided to get advice on here:

I developed a pure-Python extension for KAP 5.1.1 (Windows). Its installation and usage work as expected. However, uninstalling it does not really make it disappear. Here is what I observe afterwards:

• My extension’s nodes are no longer available in KAP.
• My extension is removed from the features folder of my KAP installation.
• Two folders related to my extension continue to exist in the plugins folder.

These two folders are not just empty directories, but actually my extension’s entire source code alongside its fully functional conda environment.

While I suppose that backward compatibility is the reason for keeping them around when I update my extension, I cannot make sense of it when uninstalling (other than saving time in case of a future reinstall).

Is this intended behavior and I am missing something, or is it a bug?

Cheers!

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