currently we have the following paragraph in our guidelines for localized qt4
"For Qt-based packages that use the Linguist tool chain, for the localisation
That's OK so far, but there's no matching package for Qt5. The Linguist
toolchain is included in the package qt5-qttools-devel, so that one has to be
added to BR for localized Qt5 packages. Would be nice to see this soon in the
guidelines, because we get more and more Qt5 software in Fedora.