I am considering using the contents of the nif.xml for one of my projects to figure out how I should write up an NIF reader. The problem I have is that I'm not sure what the licensing for this file is and how compatible it is with my project's MIT license.

The repo's license file specifies the GPL 3 but the commit summary says that this is for the parser and docs gen and there is nothing in the XML file itself that states the license. Please can this be clarified? Thanks.