License question

[Hellseher]

Hi,

I'm about to pack your project for the Guix, may I have some clarification on license type your project is distributed under, please?
There was a suggestion to check the whole code base with licensecheck where I've got some not consitant result over each file (check attachment)
licensecheck.txt

licensecheck -r . > licensecheck.txt

 awk -F: '{print $2}' licensecheck.txt  | sort | uniq -c | sort -rn
    427  GPL (v2 or later)
    141  *No copyright* UNKNOWN
      5  UNKNOWN
      4  Mozilla Public License (v2.0)
      4  GPL (v2 or later) (with incorrect FSF address)
      3  Expat License
      3  BSD 3-clause "New" or "Revised" License
      2  *No copyright* GENERATED FILE
      2  GPL (v2 or later) GENERATED FILE
      1  *No copyright* GNU General Public License
      1  GPL (v2 or later) GNU Lesser General Public License
      1  BSD 2-clause "Simplified" License