Since we now want to generate both Gnome and KDE live systems, we need some way to keep a common installer configuration with some desktop specific parts.

draklive now allows to specify environment variables in the config file, using $live->{system}{install_env}. These variables can then be used in the installer.

For exemple, we export a DRAKLIVE_DESKTOP variable, which is used in the auto_install.cfg.pl file to select packages and categories according to the desktop. It is also useful to select arch specific packages or tricks.