@tadano @teto
> but I always found them to behave strangely compared to regular package managers
that's because of the sandbox feature that i think should've been separate. For example, every app has it's own "home" folder, under $HOME/.var/app/$appname. I don't like that, and as a result you have to either symlink any personal configuration to each app or poke a hole into the sandbox feature so that your configurations on your $HOME/.config can be seen.
Also, there's the general mismatching of things because of the sandbox too. And the biggest annoyance for me is that flatpak doesn't give a shit about cli apps. So, it could've been the end all for universal packaging but it actually isnt.

As for appimage, it's not perfect either since it depends still on the libraries on the system. Again, another half assed thing.

Now, I'm not gonna shill nix much because learning it is kinda messy, but MAN I am happy I learned it.