Now the whole process is depending on a packages.json file in the build-systems/cmake folder, which now also contains the top-level CMake file. With the help of get_filename_component we ensure that the script can be called either through a symlink from the toki root dir, or from within the build-systems/cmake folder. It shall be noted, however, that the order of the package listing in the packages.json might impact the build. hence, you have to pay attention how the things are ordered there, as the order also decides on the sub-directory inclusion.