Explain better what non generational updates mean

[m3thm4th]

In the Readme it talks about the fact that updates are not generational, does this mean that every time nixos-rebuild switch is run all the gigantic flatpaks are downloaded and written to disk once again, even when there's no update for them?

[gmodena]

flatpak applications are not re-installed at each activation, unless updates are available. It's however possible to pin a specific version (and avoid updating) via the commit=<hash> attribute.

By "non-generational," it means that nix-flatpak does not inherently keep track of, or manage, multiple versions (generations) of a package over time like Nix does. This means that if you rollback your system (or home manager), you may not get the same versions of flatpak applications you had before the rollback.

[m3thm4th]

Thank you, that explanation is perfect. You might want to add that to the Readme for future smooth-brained readers like me.