Flatpak

Resources

Flatpak is a package management framework for Linux desktop applications. It aims to provide support for sandboxed, distro-agnostic binary packages.

Installation

`doc`	Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
`gtk`	Add support for x11-libs/gtk+ (The GIMP Toolkit)
`introspection`	Add support for GObject based introspection
`kde`	Add support for software made by KDE, a free software community
`policykit`	Enable PolicyKit (polkit) authentication support
`seccomp`	Enable seccomp (secure computing mode) to perform system call filtering at runtime to increase security of programs
`systemd`	Enable use of systemd-specific libraries and features like socket activation or session tracking

Data provided by the Gentoo Package Database · Last update: 2021-03-11 07:23 More information about USE flags

Note
Chromium-based browsers suggest disabling suid USE-flag for sys-apps/bubblewrap for performance reasons.

Note
Flatpak installation guide suggested to restart the system after installation. This might be no longer necessary.

root #emerge --ask sys-apps/flatpak

Tip
All operations with flatpak can be performed as user or as root.

user $flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

/var/lib/flatpak - global flatpak state (system-wide installed apps and repos)
~/.local/share/flatpak - per-user flatpak state (locally installed apps and repos)
~/.var/app/ - per application state (configuration files and cache)

To install an application, e.g. Thunderbird, run:

user $flatpak install org.mozilla.Thunderbird

To run the application use created .desktop file or run:

user $flatpak run org.mozilla.Thunderbird

To update installed applications and runtimes:

user $flatpak update

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