cannot import name GdkPixbuf, introspection typelib not found

[Drjacky]

➜  ~ photocollage
Traceback (most recent call last):
  File "/usr/local/bin/photocollage", line 21, in <module>
    from photocollage import gtkgui
  File "/usr/local/lib/python3.9/site-packages/photocollage/gtkgui.py", line 29, in <module>
    from photocollage import APP_NAME, artwork, collage, render
  File "/usr/local/lib/python3.9/site-packages/photocollage/artwork.py", line 21, in <module>
    from gi.repository import GdkPixbuf
  File "/usr/local/lib/python3.9/site-packages/gi/importer.py", line 131, in load_module
    raise ImportError('cannot import name %s, '
ImportError: cannot import name GdkPixbuf, introspection typelib not found

[rljacobson]

I don't know if this is the same issue as yours, but I had to modify the import in artwork.py to be:

import gi

gi.require_version('GdkPixbuf', '2.0')
from gi.repository import GdkPixbuf

I still haven't gotten it to run correctly, but at least I got rid of the error complaining about GdkPixbuf.