option('libnl', type: 'feature', value: 'auto', description: 'Enable libnl support for network related features') option('pulseaudio', type: 'feature', value: 'auto', description: 'Enable support for pulseaudio') option('dbusmenu-gtk', type: 'feature', value: 'auto', description: 'Enable support for tray') option('out', type: 'string', value : '/', description: 'output prefix directory') option('filesystem-experimental', type: 'boolean', value: 'true', description: 'Does filesystem still live in experimental?')