yo're going to want to remove slackware pkgs
PyQt5
python-pyqt5-sip
eigen3

before building/installing these deps

run the script in kde/src/applications-extra/get-krita.sh 
to download the source

build these deps first, uncomment krita in
kde/modules/applications-extra

re-run kde.SlackBuild

poof krita qt6 pre-alpha shall be yours
