The license of coolreader was previously set to GPLv2 in the SPEC file,
however per the short discussion in a related thread, it was always GPLv2+:
This was now amended and a PR with the license file itself submitted to
In addition, upstream at some point changed the main tested GUI from QT
(Qt4) to QT5 (Qt5). I tried triaging the many source code related build
failures for Qt4, but it's pretty clear Qt4 is no longer their main focus.
Thus, I switched to Qt5 in the SPEC file.
The change already landed in Fedora 34/Rawhide.