GTK missing in Inkscape 1.0.2 windows

Hi, Thank you for your extension! It is mandatory in my opinion to be able devellop extension correctly and quickly in python.

I'm on win 10 pro and I use Inkscape 1.0.2-2 (e86c870879, 2021-01-15)

I copied you extension in :

G:\Utilisateurs\MYACCOUNT\AppData\Roaming\inkscape\extensions\inkscape-pyscript-master

I get this error when I use your extension

error
Traceback (most recent call last):
  File "pyscript_ide.py", line 24, in <module>
    from pyscript import main
  File "G:\Utilisateurs\MYACCOUNT\AppData\Roaming\inkscape\extensions\inkscape-pyscript-master\pyscript\__init__.py", line 28, in <module>
    gi.require_version('GtkSource', '3.0')
  File "C:\Program Files\Inkscape\lib\python3.8\site-packages\gi\__init__.py", line 126, in require_version
    raise ValueError('Namespace %s not available' % namespace)
ValueError: Namespace GtkSource not available