Free and Open Source Software

You might not care about the extra disk space, network bandwidth, and install time required by having each application package up duplicate copies of all the libraries they depend on, but I sure do.

Updates in flatpak tend to be smaller in flatpak than with packages. Flatpak only downloads files that changed, packages always download all files. But yes, the initial install of the first flatpak is going to take more bandwidth. The second package is then already reusing a lot of files already installed by the first.

Memory use is also higher, because having separate copies of common libraries means that each copy needs to be loaded into memory separately, and that memory can't be shared across multiple processes.

All the base libraries are ahared between all flatpaks. Only very specialized libs end up getting installed several times (or libs with a different build configuration), but those are very like going to be used by one application anyway, independent of how youninstall the application.

I also trust my distribution to be on top of security updates much more than I trust every random application developer shipping Flatpaks.

I trust developers to have a way better idea what the software actually needs than some random packages that also packages 200 other things.

But tbh, even if you do want each application to bundle its own libraries, there was already a solution for that which has been around forever: static linking. I never understood why we're now trying to create systems that look like static linking, but using dynamic linking to do it.

Yeap, static linking cannget similar results, but at the price of more bandwidth usage (you need to download the same library code over and over again) and resource usage: You do not get deduplication of libraries, so that code needs to be loaded into RAM repeatedly.

I think the idea that it's not practical for different software to share the same libraries is overblown.

I tried that: It is a huge pain. You basically can not use anything newer than 3 years or so as distributions will not have the new code yet. It is also eating a lot of time when you get but reports and then find out some packager has shipped your code linked to a library kniwn to be broken. Happens all the time:-( You need to be able to point people to working binaries of your product, so you will just package the stuff yourself. Doing that once properly for flatpak is very nice -- oder doing it a dozen times, each time testing with the package versions and patches applied on top of that version the distribution ships.

But younleft out the one thing that makes me prefer flatpak: I can restrict what an application can do. E.g. no broser can access anything outside the downloads folder, etc. I care about my stuff in the home directory. Traditional Unix security has nothing to help me stop one application messing with the data from another, stealing my ssh keys or turn on my cameras or microphones. Flatpak can limit all that to certain applications -- and when thebapplication supports it, even more than that.