[DiapDealer]

In all fairness: if utilizing the default system qt5 on Linux (like all repo versions of Sigil will), there's really no need to add the QT_INSTALL_LIBS location to the LD_LIBRARY_PATH via the Sigil launch script (though as long as it's correct, it hurts nothing). Perhaps I should look into providing a USING_SYS_QT5 cmake directive that packagers/builders could use to configure the launch script to skip that part.