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