How to enable qt graphics toolkit on Google Colab?

[fangq]

I have been using oct2py with octave to create MATLAB tutorials on Google Colab, and it generally works really well.

I am now working in a section showing how to use uicontrol() to create simple GUIs, but it appears that the oct2py installed on Colab does not have qt graphics toolkit. the only one available is gnuplot.

I am wondering if there is any specific package I need to install to enable qt graphics toolkit?

here is my setup code

!sudo apt-get install octave gnuplot-qt
!pip install oct2py  # Octave integration with jupyter notebook
%load_ext oct2py.ipython