ipywidgets display, but don't trigger re-execution on change

[joseph-long]

I tried a basic widget example in a .qmd file:

from ipywidgets import interact
import numpy as np

@interact(alpha=(-5, 5, 0.1))
def f(alpha):
    return print(np.linspace(-10, 10) ** alpha)

The slider and the output appear, but the output does not update when the slider does:

Happy to dig into this more if someone can suggest a place to look. I'd love to be able to go directly from Jupyter notebooks to interactive documents on a website.