Yes, I advise to use the pip installer, the current nightly is installed with
pip install ngsolve==6.2.2202.dev38
There is still an issue with versioning of the nightly builds (should be 6.2.2203.dev38 do be considered newer by python).
Once this is fixed you can update the nightly with:
pip install --upgrade --pre ngsolve
Best,
Matthias