The recommended way to install tweeper globally is to install all its files under /usr/share/php/tweeper and then make a symlink to the wrapper script "tweeper" under /usr/bin Tweeper depends on php-symfony-serializer which is used to convert json to xml for some sites which provide the timeline data in json rather than in directly transformable html. NOTE: Tweeper also depends indirectly on php-symfony-property-access because the code relies on the ObjectNormalizer class which requires the PropertyAccess component, see http://symfony.com/doc/current/components/serializer.html#installation