Nixpkg, w/ allowUnfree.

If you try it I'd be interested in learning about your experience, as I'm looking into doing something similar early next year (distribution, not similar to the app itself).

Thanks for suggestion! Haven't worked with Nix ecosystem yet, but definitely going to check it out and see what works in the end.

I personally like AppImage best of the "non-native" app package formats, but ideally you could set up one of the native package build CI pipelines somewhere and automagically build native distro packages from your source tree for the most common three or four native package formats and let the community build more "esoteric" packages for themselves from those possibly?