[Operyl]

Sure, the "package managers" on Linux, Windows, and macOS all behavior in pretty similar fashions. A manifest of files that the installer knew at time of install. That doesn't stop a program from installing anything else at run time, or even in the installer (since they can define what to remove in a lot of cases). This wasn't an "accident," it was purposely left behind with the intention of being used to onboard users easily even after they removed the client. This would have pretty much been an issue on every platform (had it been implemented on other platforms). And please, don't tell me "but Docker!" Docker, at present, isn't really usable with GUI applications yet.

[microtonal]

And please, don't tell me "but Docker!" Docker, at present, isn't really usable with GUI applications yet.

But Flatpak! Flatpak applications can be sandboxed and you can install/remove applications as one unit.

[Operyl]

Is Flatpak still open to the issues outlined at http://flatkill.org/?

If so, it doesn’t seem much better.