[ChocolateGod]

AppImage isn't truly cross distribution in the first place because how it handles dependencies is not truly portable.

[embedding-shape]

I mean yeah, it doesn't aim to be a "cross-platform compilation/building system" so of course dependencies is up to you to solve, AFAIK AppImage only aims to solve packaging itself, not what goes into that package.

[ChocolateGod]

Which doesn't solve the same problem that Flatpak solves, namely having a package format that a developer can target and it run the same everywhere.

[account42]

Its as portable as you make it, just like with binaries in .tar.gz archives or shar installers.