if version_gt $required_version_pyqt $PYQTVERSION; then echo "PyQt must be version >= $required_version_pyqt but is $PYQTVERSION. Aborting."; exit 1; fi
python3 -c 'import xdg' >/dev/null 2>&1 || { echo >&2 "PyXDG for Python3 >= $required_version_pyxdg is required but it's not installed. https://freedesktop.org/wiki/Software/pyxdg/ . Aborting."; exit 1; }
if version_gt $required_version_pyxdg $PYXDGVERSION; then echo "PyXDG must be version >= $required_version_pyxdg but is $PYXDGVERSION. Aborting."; exit 1; fi