## Why does RetroDECK need the filesystem=host permission?
`filesystem=host` is the only permission that allows you full access to `/media` and `/mnt`.
The users wants to be able to move or use files in different directories, sdcards and external disks in the file system.
We had a lower level permission before but with access to all the gaming devices and more things the flathub developers recommend us to raise the permission level.
The best solution would be if there where more granular permissions in flatpak and flathub:
- External storage devices
- General usb devices
- Gaming devices (often needs even more access).
- ETC..
We have provided feedback to the developers regarding this and they are looking into it for the future. As soon as more granular permissions are available we will switch to those.
No, but RetroDECK had some dialog before the project started with some of the Batocera crew if there were any plans to start a Batocera non-OS application (there were no plans at that moment and their focus is to make the best retro gaming operative system).
RetroDECK and Batocera also have good dialog together with representatives of each project inside the internal development channels.
EmuDeck is a shell script interface that you run in the Steam Decks desktop mode that downloads and configures all the separate emulators & plugins for you from various sources using a built-in electron based gui.
RetroDECK is an all-in-one application contained in a sandboxed environment called "flatpak", that is downloaded from Discover (Flathub). This is Valves and other Linux desktops recommended way of distributing applications on the Steam Deck and Linux desktop in a safe way. It guarantees for example even if Valve makes major changes to the file system in a SteamOS update, RetroDECK and its configurations will not be touched and will be safe.
RetroDECK only writes in these two folders: `~/retrodeck` for roms/configurations/bios etc.. And an hidden flatpak folder located in `~/.var/net.retrodeck.retrodeck`.
As everything is contained within those two folders it will not conflict if you decide to install an emulator from another source like Yuzu or RetroArch with your RetroDECK setup. Even if you uninstall RetroDECK all your roms/bios/saves/etc.. are safe until you remove the `~/retrodeck` folder. If you for some reason don't like the application after playing for a while you can easily move out your important files after an uninstall (or you can just reinstall RetroDECK again and start where you left off).
This approach of everything is in an all-in-one package will also allow RetroDECK to do tighter integrations with each bundled emulator in the future and expose all those settings when you are inside RetroDECK, so you do not need to go into Steam Decks desktop mode to do changes and tweaks. All things should be, in the long term, inside the application itself and you can already see a part of that inside the RetroDECK Configurator in the Tools menu.
- Batocera is a retro emulation operative system that you need to boot into separately (like from an SDCard) or replace your current OS. For the Steam Deck you lose access to the SteamOS features and your emulation gaming is separate from your SteamOS gamemode gaming. That said; Batocera has many years of development time, is a great mature OS with a lot of features.
- EmuDeck is a shell script interface that you download and run. The interface downloads & configures all the separate emulators & plugins for you from various sources for various operative systems and create a common linked folder structure in that system from the native emulator folders.
- RetroDECK is an all-in-one application that should provide a preconfigured but modifiable environment to make it easy for both the new user and hardcore veteran to use. The goal is to provide everything you need in one application without the need to download tons of separate apps on your system, only one thing to update. As RetroDECK is a flatpak and on Flathub, it allows the users to update the application from standard update methods already built into the operating system like KDE Discover or Gnome Software. All the important userdata files (roms/bios/scarped things/etc..) are contained within one folder and not all over the filesystem.
You can see RetroDECK as the in-between of EmuDeck and Batocera. We hope that one day we can offer a complete Batocera-like experience right inside your operating system.
