The GUI is the only part of Cappsule which hasn't been developed from scratch, but forked from Qubes OS because they share the very same goals.
The fork is a merge of the different Qubes OS GUI repositories into a single one:
- https://github.com/QubesOS/qubes-gui-daemon
- https://github.com/QubesOS/qubes-gui-common
- https://github.com/QubesOS/qubes-gui-agent-linux
Some features (copy/paste and sound support) aren't implemented.
GUI support requires Xorg to be launched from Qubes OS wrapper (/usr/local/cappsule/usr/bin/X-wrapper-qubes) in order to load a shared library.
Originally, Cappsule used LightDM to launch the wrapper, but it doesn't support it anymore. GDM seems more convenient nowadays because it doesn't require Xorg to run as root. The wrapper is launched from /usr/lib/xorg/Xorg.wrap.
GUI support is optional. Cappsules can be run without GUI support thanks to the server version, or using the following command lines.
Launch daemon without GUI support: :
/usr/local/cappsule/usr/bin/daemon --no-guiLaunch a new cappsule without GUI support (for command line application for instance): :
virt exec --no-gui bashWindow manager don't implement window border color feature, thus they have to be patched in order to support it.
Ubuntu 16 default window manager is Unity. We chosed to support the previous window manager, metacity, which is provided by the gnome-session-flashback package. The patch can be found in the GUI repository.
Si le gestionnaire de fenêtre n'est pas Metacity, les contributions sont les bienvenues.