Pyside install may fail on first attempt

On a slow machine:

• create a new python project, use a python kit (I've got some globally Py3.8 which can be autodetected)
• short after the main file opens the info banner regarding missing pyside6 pops up
• immediately hit the install button

This fails here with different error messages (all directing to the assumption that the pyenv has not finished setting up yet)

g:\testing\projects\untitled19\.qtcreator\Python_3_8_64_bit_venv\Scripts\python.
exe: No module named pip 

Banner comes up again, hitting install again normally works then, but I also had runs with 2 fails in a row.