How to deal with cache file on uninstall?

[moi15moi]

I'm currently trying to find a solution for this issue: moi15moi/FontCollector#50

With Pickle, FontCollector serialize and save objects into files. Those acts like a cache.

The file is saved in the directory that gettempdir return.
But, when the user uninstall my package, those cache files aren't deleted.

In pyproject.toml, is there a way to say to call some function (in my case, it would be FontLoader.discard_system_font_cache() and FontLoader.discard_generated_font_cache()) or to specify a file to delete when he try to uninstall my package with pip uninstall MY_PACKAGE_NAME?

I'm not sure if it is the right place to ask. If it isn't sorry.

[abravalheri]

Setuptools does not run on uninstall so there is not much we can do about it in this repo.

(To be honest, I don't think this functionality is currently implemented somewhere in the ecosystem)

[webknjaz]

Yeah, the only way I can think of is hacking the metadata files that installers like pip use for tracking what they installed. Quite sketchy, if you ask me…

[moi15moi]

Ok, I saw Data Files Support which I guess could work but I don't want to include the files when I build the package and publish it on PyPi.