OK, I managed to run it following the instructions from @ahoeben. There were some extra steps needed:
- It needs Python 3.5.x, 64bit with Python 3.8 I could not install PyQT5.10, just a newer one, that wont work (note that the install page at https://github.com/Ultimaker/Cura/wiki/Running-Cura-from-Source-on-Windows mentions 32 bit python, but I think one of the .pyd files was 64bits.).
-These dependencies were enough:
numpy scipy colorlog zeroconf pyserial PyQt5==5.10 requests
- Also i needed to install Shapely as described here: https://github.com/Ultimaker/Cura/wiki/Running-Cura-from-Source-on-Windows#python-352