Displaying ipycanvas in google colab?

Hello! I’m preparing a tutorial using ipycanvas, and while it works perfectly in my local jupyter installation, I can’t get the same code to display in google colab (for remote students).

I know this is much more likely to be a google colab issue than a ipycanvas issue, but I was wondering if you know any workarounds from experience?

This is the code that I’m trying to run.

from ipycanvas import Canvas
testipycanvas = Canvas(width = 20, height = 20)
testipycanvas.fill_style = "green"
testipycanvas.fill_rect(0,0,20)
display(testipycanvas)

(I have already !pip install’ed the module with no errors. The code above gives me a blank output with no error messages)

[martinRenou]

ipycanvas seems to work very nicely with Colab now thanks to @blois 's amazing work!

!pip install -q ipycanvas

from google.colab import output
output.enable_custom_widget_manager()

from ipycanvas import Canvas
testipycanvas = Canvas(width = 20, height = 20)
testipycanvas.fill_style = "green"
testipycanvas.fill_rect(0,0,20)
display(testipycanvas)

[caranha]

Also apparently the correct issue on googlecolab about custom widget libraries is now on googlecolab/colabtools#498