Flatpak in Debian ================= Flathub ------- Flathub is a reference app-store for Flatpak apps. It is not enabled by default in Debian, in order to keep the Debian distribution self-contained and entirely Free Software. See https://flatpak.org/setup/Debian/ for more information on how to add Flathub as a source of apps and runtimes. Note that Flathub includes both Free Software and non-Free apps. Adding Flatpak apps to search paths ----------------------------------- This is mostly done automatically on systems that implement environment.d(5), and in particular systems that use systemd. It is also done automatically on systems that source /etc/profile.d. On systems that do not implement environment.d(5) or source /etc/profile.d, you will need to amend the XDG_DATA_DIRS environment variable so that desktop environments will find Flatpak apps. Add the following paths: - $XDG_DATA_HOME/flatpak/exports/share, for Flatpak apps installed in the user's home directory (the default for $XDG_DATA_HOME is ~/.local/share) - /var/lib/flatpak/export/share, for Flatpak apps installed system-wide - The exports/share subdirectory of any extra installations configured in /etc/flatpak/installations.d/ (see flatpak-installation(5) for details) If XDG_DATA_HOME is set to a non-default value, you might need to add $XDG_DATA_HOME/flatpak/exports/share to the search path yourself, or be careful with the order in which environment variables are set. Using the default is encouraged. On systems using GNOME's gdm display manager (the gdm3 Debian package), adding /usr/share/doc/flatpak/examples/etc/gdm3/flatpak.env to /etc/gdm3/env.d/ might be helpful. However, if you use other app frameworks that also need to amend the search path (such as Canonical's Snap), due to limitations in gdm's env.d mechanism, it will be necessary to construct a single search path that combines the search paths for Flatpak and the other app framework(s). environment.d(5) does not have these limitations, and is recommended.