There are many library packages that begin with "libre", perhaps 150+ e.g. libregexp-common-perl, libretro-core-info

Perhaps it's better to make a setting to toggle this filtering then

why not just add it to the existing strings:

if name.startswith("lib") and not name.startswith(("libreoffice", "librecad", "libk3b7", "libimage-exiftool-perl", "librewolf")):

as i mentioned in linuxmint/mintinstall#470 i don't think it's a good idea to special-case package names like that, because it leads to confusing behavior when false positives like this occur. i suspect there are many more user-facing packages that start with "libre", so as long as there's the possibility for more false positives i think a better solution is to give users the option to either toggle or customize this filtering. but i guess i can just go with your suggestion for now

I only found libreoffice and librecad that looked like applications. Should be fine.

This isn't great, but it works well enough in practice (this list hadn't been updated since 2018)...

• So many packages start with lib- this is a performance concern for the software manager, not just an attempt to hide useless packages from normal users.
• We've tried to get away from making options for things like this that are technical in nature, and prefer to try to 'do the best we can' in a situation instead.