The source package had several issues:

 - it is only available as zip download
 - the mklist utility is in its own zip archive
 - there exist other, older versions of the mklist utility which can be removed
 - mklist.c doesn't compile and has to be fixed
 - there exists no Makefile to install the software
 - CC-BY-4.0 parts are mixed with CC-BY-2.0 parts

To fix these issues the following steps were done:

 - the software was repacked as a tar.xz (tar.gz is 50% larger)
 - mklist.c has been retrieved from the latest zip file and fixed
 - a Makefile has been added to compile and install the software
 - all non-free CC-BY-2.0 material is removed