The README says it's BSD licensed but that's not the actual copyright notice (COPYING and COPYING.ko). The license appears to be Baekmuk and it also has a SPDX entry: https://spdx.org/licenses/Baekmuk.html From what I can tell it's a broadly permissive license permitting free use, redistribution and modification as long as COPYING and COPYING.ko are distributed with the software. I suggest adding it to the MISC-FREE license group. Reproducible: Always
I just found the BAEKMUK license in ::gentoo... The one I linked to is the updated version. It's also available on ::guru.