meld won't run on Cygwin: AttributeError: module 'gi' has no attribute 'require_version

I'm trying to run meld on Cygwin, after having installed it, and circumvented the "no module named 'meld'" issue by forcing it to use Python 3.6 . Now, I get:

$ meld
Traceback (most recent call last):
  File "/usr/bin/meld", line 341, in 
    check_requirements()
  File "/usr/bin/meld", line 193, in check_requirements
    gi.require_version("Gtk", "3.0")
AttributeError: module 'gi' has no attribute 'require_version'

Where do I get gi from, and what do I do to get meld to work? Version info: * Windows: Version 10.0.19045.5131 * Cygwin: Updated 2024-12-05 * meld: 3.18.0-1 * Python3: 3.9.16 * Python3.6: 3.6.15 I can provide additional information as relevant, just ask in a comment.