this post was submitted on 20 Aug 2023
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Docker is made for servers, it's totally a different usecase.
I am not anti VM and docker, I just don't think we need more levels of indirection in the OS, I also don't think a distro based heavily on flatpak will be any good, one thing is sure it will be using a lot of diskspace and memory, as there's no sharing of libs. And if flatpak starts sharing libs it just re-invented the GNU linker.
I mostly agree with those points.
Flatpak does support sharing 'libraries' (although not in the way you mean), however from my perspective the main problem is developers referencing
Kde-Framework-420.69.1, and others referencingKde-Framework-420.69.1-rc1or various other variations of very similar dependencies, which tends to eat up additional disk space. I'm personally not too bothered by it, but that's only because I have the storage space for that.With flatpak's shtick being isolation and a consistent runtime environment, I doubt there'll be true sharing of linked libraries and the associated memory space, so excess RAM usage and disk space as you've mentioned.
The distros based on Flatpak (can't remember the names right now sadly) are mostly immutable ones, where the base system remains untouched, and in that scenario I think it makes the most sense, particularly in education.
The instances I use flatpak are slightly similar to that, with the difference being the libraries available in the base system may be too old to run the application natively
I believe the immutable distros you're referring to are Fedora Silverblue and Fedora Kinoite.