I love installing things from the CLI and prefer to only do it that way but Linux needs a single click install method for applications if it’s ever going to become a mainstream OS. The average person just wants to Google a program, hit download and install. If not that then they want to use a mobile-like App Store.

Flatpak is kind of perfect at achieving both those things

Flatpak have their own set of issues. One thing is, that Flatpak applications do not integrate that easily and perfect like a native package. Either rights are to given, you need to know what rights are needed and how to set it up. Theming can be an issue, because it uses its own libraries in the Flatpak eco system instead your current distributions theme and desktop environment.

But on the other hand, they have actually a permission system and are a little bit sandbox compared to normal applications. Packages often are distributed quickly and are up to date directly from the developers, and usually are not installed with root rights.

I’m pretty much a CLI guy as well and prefer native packages (Arch based, plus the AUR). But I also use Flatpaks for various reasons, alongside with AppImages.

I’d take a well-maintained native package for my distro over a Flatpak, but sometimes, a Flatpak is just the the easiest way to get the latest version of an application working on Debian without too much tinkering - not always no tinkering, but better than nothing.

This is especially true of GIMP - Flatpak GIMP + Resynthesizer feels like the easiest way to experience GIMP these days. Same with OBS - although I have to weather the Flatpak directory structure, plugins otherwise feel easier to get working than the native package. The bundled runtimes are somewhat annoying, but I’m also not exactly hurting for storage at the moment - I could probaby do to put more of my 2 TB main SSD to use.

I usually just manage Flatpaks from the terminal, though I often have to refresh myself on application URLs. I somewhat wish one could set nicknames so they need not remember the full name.

Flatpaks are pretty great for getting the latest software without having to have a cutting edge rolling release distro or installing special repos and making sure stuff doesn’t break down the line.

I use Flatpaks for my software that I need the latest and greatest version of, and my distros native package for CLI apps and older software that I don’t care about being super up to date.

My updater script handles all of it in one action anyways, so no biggie on that either.

Flatpaks are the best all-in-one solution when compared to Appimages or Snaps imo.

Certainly a fan, and I don’t understand the hate towards it.

Flatpaks are my preferred way of installing Linux apps, unless it is a system package, or something that genuinely requires extensive permissions like a VPN client, or something many other apps depend on like Wine.

The commonly cited issues with Flatpaks are:

• Performance. Honestly, do you even care if your Pomodoro timer app takes up 1 more megabyte of RAM? Do you actually notice?
• Bloat. Oh, yes, an app now takes 20 MB instead of 10 MB. Again, does anybody care?
• Slower and larger updates. Could be an issue for someone on a metered traffic, or with very little time to do updates. Flatpaks update in the background, though, and you typically won’t notice the difference unless you need something newest now (in which case you’ll have to wait an extra minute)
• Having to check permissions. This is a feature, not a bug. For common proponents of privacy and security, Linuxheads grew insanely comfortable granting literally every maintainer full access to their system. Flatpaks intentionally limit apps functionality to what is allowed, and if in some case defaults aren’t good for your use case - just toggle a switch in Flatseal, c’mon, you don’t need any expertise to change it.

What you gain for it? Everything.

• Full control over app’s permissions. Your mail client doesn’t need full system permissions, and neither do your messengers. Hell, even your backup client only needs to access what it backs up.
• All dependencies built in. You’ll never have to face dependency hell, ever, no matter what. And you can be absolutely sure the app is fully featured and you won’t have to look for missing nonessential dependencies.
• Fully distro-agnostic. If something works on my EndeavourOS, it will work on my OpenSUSE Slowroll, and on my Debian 12. And it will be exactly the same thing, same version, same features. It’s beautiful.
• Stability. Flatpaks are sandboxed, so they don’t affect your system and cannot harm it in any way. This is why immutable distros feature Flatpaks as the main application source. Using them with mutable distributions will also greatly enhance stability.

Alternatives?

AppImages don’t need an installation, so they are nice to see what the program is about. But for other uses, they are garbage-tier. Somehow they manage both not to integrate with the system and not be sandboxed, you need manual intervention or additional tools to at least update them/add to application menu, and ultimately, they depend on one file somewhere. This is extremely unreliable and one should likely never use AppImages for anything but “use and delete”.

Snaps…aside from all the controversy about Snap Store being proprietary and Ubuntu shoving snaps down people’s throats, they were just never originally developed with desktop applications in mind. As a result, Snaps are commonly so much slower and bulkier that it actually starts getting very noticeable. Permissions are also way less detailed, meaning you can’t set apps up with minimum permissions for your use case.

This all leaves us with one King:

And it is Flatpak.

Flatpaks are great for situations where installing software is unnecessary complex or complicated.

I have Steam installed for some games, and since this is a 32 bits application it would install a metric shit-don of 32 bit dependencies I do not use for anything else except Steam, so I use the Flatpak version.

Or Kdenlive for video editing. Kdenlive is the only KDE software I use but when installing it, it feels like due to dependencies I also get pretty much all of the KDE desktop’s applications I do not need nor use nor want on my machine. So Flatpak it is.

And then there is software like OBS, which is known for being borderline unusable when not using the only officially supported way to use it on Linux outside of Ubuntu – which is Flatpak.

I’ve never heard anyone say that Flatpaks could result in losing access to the terminal.

My only problem with Flatpaks are the lack of digital signature, neither from the repository nor the uploader. Other major package managers do use digital signatures, and Flatpaks should too.

Can someone explain why flatpak isn’t necessary for distros that have proper OS dependency management like Arch-based distros or Nix?

Seems like flatpak is solving a problem for OS’s that don’t have proper dependency management.